Global SysCache

Offering: openGaussDev

More detail:
lsc内存控制

# Conflicts:
#	src/test/regress/expected/gsc_func.out

Match-id-675c5cad1d601f1e7ca9e318fe82367c9626f4e8

src/common/backend/utils/cache/knl_localsysdbcache.cpp

@@ -593,7 +593,6 @@ void LocalSysDBCache::LocalSysDBCacheClearMyDB(Oid db_id, const char *db_name)
     MemoryContextResetAndDeleteChildren(lsc_mydb_memcxt);
 
     is_inited = false;
-    other_space = ((AllocSet)lsc_top_memcxt)->totalSpace + ((AllocSet)lsc_share_memcxt)->totalSpace;
     rel_index_rule_space = 0;
 }
 
@@ -622,29 +621,26 @@ void LocalSysDBCache::LocalSysDBCacheReSet()
     UnRegisterRelCacheCallBack(&inval_cxt, RelfilenodeMapInvalidateCallback);
     UnRegisterSysCacheCallBack(&inval_cxt, TABLESPACEOID, InvalidateTableSpaceCacheCallback);
 
-    MemoryContextResetAndDeleteChildren(lsc_mydb_memcxt);
+    MemoryContextDelete(lsc_mydb_memcxt);
-    MemoryContextResetAndDeleteChildren(lsc_share_memcxt);
+    MemoryContextDelete(lsc_share_memcxt);
+    lsc_share_memcxt =
+        AllocSetContextCreate(lsc_top_memcxt, "LocalSysCacheShareMemoryContext", ALLOCSET_DEFAULT_MINSIZE,
+                              ALLOCSET_DEFAULT_INITSIZE, ALLOCSET_DEFAULT_MAXSIZE, STANDARD_CONTEXT);
+
+    lsc_mydb_memcxt =
+        AllocSetContextCreate(lsc_top_memcxt, "LocalSysCacheMyDBMemoryContext", ALLOCSET_DEFAULT_MINSIZE,
+                              ALLOCSET_DEFAULT_INITSIZE, ALLOCSET_DEFAULT_MAXSIZE, STANDARD_CONTEXT);
 
     MemoryContext old = MemoryContextSwitchTo(lsc_share_memcxt);
     knl_u_relmap_init(&relmap_cxt);
     MemoryContextSwitchTo(old);
 
-    other_space = ((AllocSet)lsc_top_memcxt)->totalSpace + ((AllocSet)lsc_share_memcxt)->totalSpace;
     rel_index_rule_space = 0;
     is_inited = false;
     is_closed = false;
     is_lsc_catbucket_created = false;
 }
 
-static bool LSCMemroyOverflow(uint64 total_space)
-{
-    const uint32 kb_bit_double = 10;
-    if (unlikely(total_space < ((uint64)g_instance.attr.attr_memory.local_syscache_threshold << kb_bit_double))) {
-        return false;
-    }
-    return true;
-}
-
 bool LocalSysDBCache::LocalSysDBCacheNeedReBuild()
 {
     /* we have recovered from startup, redo may dont tell us inval msgs, so discard all lsc */
@@ -655,15 +651,21 @@ bool LocalSysDBCache::LocalSysDBCacheNeedReBuild()
         return true;
     }
 
-    /* it seems only fmgr_info_cxt has no resowner to avoid mem leak.
+    /* we assum 1kb memory leaked once */
-     * we assum 1kb memory leaked once */
     if (unlikely(abort_count > (uint64)g_instance.attr.attr_memory.local_syscache_threshold)) {
         return true;
     }
 
-    uint64 total_space = other_space +  AllocSetContextUsedSpace((AllocSet)lsc_mydb_memcxt) +
+    uint64 total_space =
-        AllocSetContextUsedSpace((AllocSet)u_sess->cache_mem_cxt) + rel_index_rule_space;
+        ((AllocSet)lsc_top_memcxt)->totalSpace +
-    return LSCMemroyOverflow(total_space);
+        ((AllocSet)lsc_share_memcxt)->totalSpace +
+        ((AllocSet)lsc_mydb_memcxt)->totalSpace +
+        ((AllocSet)u_sess->cache_mem_cxt)->totalSpace +
+        rel_index_rule_space;
+
+    uint64 memory_upper_limit = ((uint64)g_instance.attr.attr_memory.local_syscache_threshold) << 10;
+
+    return total_space * (1 - MAX_LSC_FREESIZE_RATIO) > memory_upper_limit;
 }
 
 /* rebuild cache on memcxt of mydb or share, call it only before initsyscache */
@@ -693,8 +695,23 @@ void LocalSysDBCache::LocalSysDBCacheReBuild()
 
 bool LocalSysDBCache::LocalSysDBCacheNeedSwapOut()
 {
-    uint64 total_space = other_space + rel_index_rule_space + ((AllocSet)lsc_mydb_memcxt)->totalSpace;
+    uint64 used_space =
-    return LSCMemroyOverflow(total_space);
+        AllocSetContextUsedSpace((AllocSet)lsc_top_memcxt) +
+        AllocSetContextUsedSpace((AllocSet)lsc_share_memcxt) +
+        AllocSetContextUsedSpace((AllocSet)lsc_mydb_memcxt) +
+        AllocSetContextUsedSpace((AllocSet)u_sess->cache_mem_cxt) +
+        rel_index_rule_space;
+    uint64 memory_upper_limit =
+        (((uint64)g_instance.attr.attr_memory.local_syscache_threshold) << 10) * cur_swapout_ratio;
+    bool need_swapout = used_space > memory_upper_limit;
+
+    /* swapout until memory used space is from MAX_LSC_SWAPOUT_RATIO=90% to MIN_LSC_SWAPOUT_RATIO=70% */
+    if (unlikely(need_swapout && cur_swapout_ratio == MAX_LSC_SWAPOUT_RATIO)) {
+        cur_swapout_ratio = MIN_LSC_SWAPOUT_RATIO;
+    } else if (unlikely(!need_swapout && cur_swapout_ratio == MIN_LSC_SWAPOUT_RATIO)) {
+        cur_swapout_ratio = MAX_LSC_SWAPOUT_RATIO;
+    }
+    return need_swapout;
 }
 
 void LocalSysDBCache::CloseLocalSysDBCache()
@@ -717,7 +734,6 @@ void LocalSysDBCache::ClearSysCacheIfNecessary(Oid db_id, const char *db_name)
     if (unlikely(!is_inited)) {
         return;
     }
-    other_space = ((AllocSet)lsc_top_memcxt)->totalSpace + ((AllocSet)lsc_share_memcxt)->totalSpace;
     /* rebuild if memory gt double of threshold */
     if (unlikely(LocalSysDBCacheNeedReBuild())) {
         recovery_finished = g_instance.global_sysdbcache.recovery_finished;
@@ -769,7 +785,6 @@ void LocalSysDBCache::CreateDBObject()
     knl_u_relmap_init(&relmap_cxt);
     MemoryContextSwitchTo(old);
     m_shared_global_db = g_instance.global_sysdbcache.GetSharedGSCEntry();
-    other_space = ((AllocSet)lsc_top_memcxt)->totalSpace + ((AllocSet)lsc_share_memcxt)->totalSpace;
     rel_index_rule_space = 0;
     is_lsc_catbucket_created = false;
 }
@@ -782,9 +797,9 @@ void LocalSysDBCache::CreateCatBucket()
     MemoryContext old = MemoryContextSwitchTo(lsc_share_memcxt);
     systabcache.CreateCatBuckets();
     MemoryContextSwitchTo(old);
-    other_space = ((AllocSet)lsc_top_memcxt)->totalSpace + ((AllocSet)lsc_share_memcxt)->totalSpace;
     rel_index_rule_space = 0;
     is_lsc_catbucket_created = true;
+    cur_swapout_ratio = MAX_LSC_SWAPOUT_RATIO;
 }
 
 void LocalSysDBCache::SetDatabaseName(const char *db_name)
@@ -953,6 +968,8 @@ LocalSysDBCache::LocalSysDBCache()
     got_pool_reload = false;
     m_shared_global_db = NULL;
 
+    cur_swapout_ratio = MAX_LSC_SWAPOUT_RATIO;
+
     is_lsc_catbucket_created = false;
     is_closed = false;
     is_inited = false;

src/common/backend/utils/cache/knl_localsystupcache.cpp

@@ -356,7 +356,7 @@ void LocalSysTupCache::InitPhase2Impl()
 {
     Assert(m_is_inited);
     Assert(!m_is_inited_phase2);
-    Assert(m_db_id == InvalidOid);
+    /* CacheIdGetGlobalSysTupCache maybe fail when memory fault */
     Assert(m_global_systupcache == NULL);
     /* for now we even dont know which db to connect */
     if (m_relinfo.cc_relisshared) {
@@ -509,7 +509,7 @@ LocalCatCTup *LocalSysTupCache::SearchTupleInternal(int nkeys, Datum v1, Datum v
     /* if not found, search from global cache */
     if (unlikely(!found)) {
         ct = SearchTupleFromGlobal(arguments, hash_value, hash_index, level);
-        if (ct == NULL) {
+        if (unlikely(ct == NULL)) {
             return NULL;
         }
     }
@@ -529,8 +529,10 @@ LocalCatCTup *LocalSysTupCache::SearchTupleInternal(int nkeys, Datum v1, Datum v
         cc_neg_hits++;
         ct = NULL;
     }
+    if (unlikely(!found)) {
+        RemoveTailTupleElements(hash_index);
+    }
 
-    RemoveTailTupleElements(hash_index);
     return ct;
 }
 
@@ -665,15 +667,16 @@ LocalCatCList *LocalSysTupCache::SearchListInternal(int nkeys, Datum v1, Datum v
         CACHE2_elog(DEBUG2, "SearchLocalCatCacheList(%s): found list", m_relinfo.cc_relname);
         cc_lhits++;
         found = true;
+        ResourceOwnerRememberLocalCatCList(LOCAL_SYSDB_RESOWNER, cl);
         break;
     }
 
     if (unlikely(!found)) {
         cl = SearchListFromGlobal(nkeys, arguments, hash_value, level);
+        ResourceOwnerRememberLocalCatCList(LOCAL_SYSDB_RESOWNER, cl);
+        RemoveTailListElements();
     }
-    ResourceOwnerRememberLocalCatCList(LOCAL_SYSDB_RESOWNER, cl);
 
-    RemoveTailListElements();
     return cl;
 }
 
@@ -817,12 +820,14 @@ LocalCatCTup *LocalSysTupCache::SearchLocalCatCTupleForProcAllArgs(
      */
     if (likely(ct->global_ct != NULL)) {
         CACHE3_elog(DEBUG2, "SearchLocalCatCache(%s): found in bucket %d", m_relinfo.cc_relname, hash_index);
+        ResourceOwnerEnlargeLocalCatCTup(LOCAL_SYSDB_RESOWNER);
         ct->refcount++;
         cc_hits++;
         ResourceOwnerRememberLocalCatCTup(LOCAL_SYSDB_RESOWNER, ct);
     }
-
+    if (unlikely(!found)) {
-    RemoveTailTupleElements(hash_index);
+        RemoveTailTupleElements(hash_index);
+    }
 
     pfree_ext(argModes);
     return ct;

src/include/utils/knl_localsyscache_common.h

@@ -136,4 +136,14 @@ struct InvalidBaseEntry {
 void StreamTxnContextSaveInvalidMsg(void *stc);
 void StreamTxnContextRestoreInvalidMsg(void *stc);
 #define EnableLocalSysCache() t_thrd.lsc_cxt.enable_lsc
+
+/*
+ * if MAX_LSC_SWAPOUT_RATIO is 0.9, MAX_LSC_FREESIZE_RATIO is 0.8
+ * used_space <= threshold * 0.9 < threshold ==> max_used_space = threshold * 0.8
+ * total_space > threshold >= total_space * 0.9 ==> max_total_space = threshold / 0.8
+ * so max_used_space = max_total_space * 0.72
+ * this means 72% memory can be used at the worst sence */
+const double MAX_LSC_FREESIZE_RATIO = 0.2;
+const double MAX_LSC_SWAPOUT_RATIO = 0.9;
+const double MIN_LSC_SWAPOUT_RATIO = 0.7;
 #endif

src/include/utils/knl_localsysdbcache.h

@@ -214,8 +214,6 @@ public:
     bool is_closed;
     /* mark pgxcpoolreload flag, flush relcache's locatorinfo->nodelist */
     bool got_pool_reload;
-    /* record other palloc on lsc */
-    int64 other_space;
     /* record rel's index and rule cxt */
     int64 rel_index_rule_space;
     /* record abort count, which may cause memory leak
@@ -223,6 +221,7 @@ public:
     uint64 abort_count;
     /* record concurrent rd locks on syscache */
     GSCRdLockInfo rdlock_info;
+    double cur_swapout_ratio;
 private:
     void Init();
     void CreateCatBucket();

src/test/regress/expected/gsc_func.out

@@ -1,24 +1,24 @@
 select * from gs_gsc_dbstat_info() limit 1;
- database_id | database_name | tup_searches | tup_hits | tup_miss | tup_count | tup_dead | tup_memory | rel_searches | rel_hits | rel_miss | rel_count | rel_dead | rel_memory | part_searches | part_hits | part_miss | part_count | part_dead | part_memory | total_memory | swapout_count | refcount 
+--?.* database_id | database_name | tup_searches | tup_hits | tup_miss | tup_count | tup_dead | tup_memory | rel_searches | rel_hits | rel_miss | rel_count | rel_dead | rel_memory | part_searches | part_hits | part_miss | part_count | part_dead | part_memory | total_memory | swapout_count | refcount 
--------------+---------------+--------------+----------+----------+-----------+----------+------------+--------------+----------+----------+-----------+----------+------------+---------------+-----------+-----------+------------+-----------+-------------+--------------+---------------+----------
+--?.*-------------+---------------+--------------+----------+----------+-----------+----------+------------+--------------+----------+----------+-----------+----------+------------+---------------+-----------+-----------+------------+-----------+-------------+--------------+---------------+----------
 --?.*           0 |               |           40 |       23 |        9 |         7 |        0 |       3760 |          143 |        2 |       25 |        25 |        0 |     106656 |             0 |         0 |         0 |          0 |         0 |           0 |       405848 |             0 |        0
 (1 row)
 
 select * from gs_gsc_dbstat_info(-1) limit 1;
- database_id | database_name | tup_searches | tup_hits | tup_miss | tup_count | tup_dead | tup_memory | rel_searches | rel_hits | rel_miss | rel_count | rel_dead | rel_memory | part_searches | part_hits | part_miss | part_count | part_dead | part_memory | total_memory | swapout_count | refcount 
+--?.* database_id | database_name | tup_searches | tup_hits | tup_miss | tup_count | tup_dead | tup_memory | rel_searches | rel_hits | rel_miss | rel_count | rel_dead | rel_memory | part_searches | part_hits | part_miss | part_count | part_dead | part_memory | total_memory | swapout_count | refcount 
--------------+---------------+--------------+----------+----------+-----------+----------+------------+--------------+----------+----------+-----------+----------+------------+---------------+-----------+-----------+------------+-----------+-------------+--------------+---------------+----------
+--?.*-------------+---------------+--------------+----------+----------+-----------+----------+------------+--------------+----------+----------+-----------+----------+------------+---------------+-----------+-----------+------------+-----------+-------------+--------------+---------------+----------
 --?.*           0 |               |           40 |       23 |        9 |         7 |        0 |       3760 |          143 |        2 |       25 |        25 |        0 |     106656 |             0 |         0 |         0 |          0 |         0 |           0 |       405848 |             0 |        0
 (1 row)
 
 select * from gs_gsc_dbstat_info(0) limit 1;
- database_id | database_name | tup_searches | tup_hits | tup_miss | tup_count | tup_dead | tup_memory | rel_searches | rel_hits | rel_miss | rel_count | rel_dead | rel_memory | part_searches | part_hits | part_miss | part_count | part_dead | part_memory | total_memory | swapout_count | refcount 
+--?.* database_id | database_name | tup_searches | tup_hits | tup_miss | tup_count | tup_dead | tup_memory | rel_searches | rel_hits | rel_miss | rel_count | rel_dead | rel_memory | part_searches | part_hits | part_miss | part_count | part_dead | part_memory | total_memory | swapout_count | refcount 
--------------+---------------+--------------+----------+----------+-----------+----------+------------+--------------+----------+----------+-----------+----------+------------+---------------+-----------+-----------+------------+-----------+-------------+--------------+---------------+----------
+--?.*-------------+---------------+--------------+----------+----------+-----------+----------+------------+--------------+----------+----------+-----------+----------+------------+---------------+-----------+-----------+------------+-----------+-------------+--------------+---------------+----------
 --?.*           0 |               |           40 |       23 |        9 |         7 |        0 |       3760 |          143 |        2 |       25 |        25 |        0 |     106656 |             0 |         0 |         0 |          0 |         0 |           0 |       405848 |             0 |        0
 (1 row)
 
 select * from gs_gsc_dbstat_info(1) limit 1;
- database_id | database_name | tup_searches | tup_hits | tup_miss | tup_count | tup_dead | tup_memory | rel_searches | rel_hits | rel_miss | rel_count | rel_dead | rel_memory | part_searches | part_hits | part_miss | part_count | part_dead | part_memory | total_memory | swapout_count | refcount 
+--?.* database_id | database_name | tup_searches | tup_hits | tup_miss | tup_count | tup_dead | tup_memory | rel_searches | rel_hits | rel_miss | rel_count | rel_dead | rel_memory | part_searches | part_hits | part_miss | part_count | part_dead | part_memory | total_memory | swapout_count | refcount 
--------------+---------------+--------------+----------+----------+-----------+----------+------------+--------------+----------+----------+-----------+----------+------------+---------------+-----------+-----------+------------+-----------+-------------+--------------+---------------+----------
+--?.*-------------+---------------+--------------+----------+----------+-----------+----------+------------+--------------+----------+----------+-----------+----------+------------+---------------+-----------+-----------+------------+-----------+-------------+--------------+---------------+----------
 --?.*           0 |               |           40 |       23 |        9 |         7 |        0 |       3760 |          143 |        2 |       25 |        25 |        0 |     106656 |             0 |         0 |         0 |          0 |         0 |           0 |       405848 |             0 |        0
 (1 row)
 
@@ -26,121 +26,121 @@ select * from gs_gsc_dbstat_info(2) limit 1;
 ERROR:  dbOid doesn't exist.
 DETAIL:  dbOid is invalid, please pass valid dbOid.
 select * from gs_gsc_catalog_detail() limit 1;
- database_id | database_name | rel_id | rel_name  | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
+--?.* database_id | database_name | rel_id | rel_name  | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
--------------+---------------+--------+-----------+----------+--------+--------+----------+-----------+------------+----------
+--?.*-------------+---------------+--------+-----------+----------+--------+--------+----------+-----------+------------+----------
 --?.*           0 |               |   1260 | pg_authid |       10 | (0, 9) | (0, 9) |    10507 |        26 |  531311568 |        9
 (1 row)
 
 select * from gs_gsc_catalog_detail(-1) limit 1;
- database_id | database_name | rel_id | rel_name  | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
+--?.* database_id | database_name | rel_id | rel_name  | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
--------------+---------------+--------+-----------+----------+--------+--------+----------+-----------+------------+----------
+--?.*-------------+---------------+--------+-----------+----------+--------+--------+----------+-----------+------------+----------
 --?.*           0 |               |   1260 | pg_authid |       10 | (0, 9) | (0, 9) |    10507 |        26 |  531311568 |        9
 (1 row)
 
 select * from gs_gsc_catalog_detail(0) limit 1;
- database_id | database_name | rel_id | rel_name  | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
+--?.* database_id | database_name | rel_id | rel_name  | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
--------------+---------------+--------+-----------+----------+--------+--------+----------+-----------+------------+----------
+--?.*-------------+---------------+--------+-----------+----------+--------+--------+----------+-----------+------------+----------
 --?.*           0 |               |   1260 | pg_authid |       10 | (0, 9) | (0, 9) |    10507 |        26 |  531311568 |        9
 (1 row)
 
 select * from gs_gsc_catalog_detail(1) limit 1;
- database_id | database_name | rel_id | rel_name  | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
+--?.* database_id | database_name | rel_id | rel_name  | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
--------------+---------------+--------+-----------+----------+--------+--------+----------+-----------+------------+----------
+--?.*-------------+---------------+--------+-----------+----------+--------+--------+----------+-----------+------------+----------
 --?.*           0 |               |   1260 | pg_authid |       10 | (0, 9) | (0, 9) |    10507 |        26 |  531311568 |        9
 (1 row)
 
 select * from gs_gsc_catalog_detail(-1, 1262) limit 1;
- database_id | database_name | rel_id |  rel_name   | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
+--?.* database_id | database_name | rel_id |  rel_name   | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
--------------+---------------+--------+-------------+----------+--------+--------+----------+-----------+------------+----------
+--?.*-------------+---------------+--------+-------------+----------+--------+--------+----------+-----------+------------+----------
 --?.*           0 |               |   1262 | pg_database |       27 | (0, 4) | (0, 4) |    10506 |        15 |  361410604 |        1
 (1 row)
 
 select * from gs_gsc_catalog_detail(0, 1262) limit 1;
- database_id | database_name | rel_id |  rel_name   | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
+--?.* database_id | database_name | rel_id |  rel_name   | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
--------------+---------------+--------+-------------+----------+--------+--------+----------+-----------+------------+----------
+--?.*-------------+---------------+--------+-------------+----------+--------+--------+----------+-----------+------------+----------
 --?.*           0 |               |   1262 | pg_database |       27 | (0, 4) | (0, 4) |    10506 |        15 |  361410604 |        1
 (1 row)
 
 select * from gs_gsc_catalog_detail(1, 1262) limit 1;
- database_id | database_name | rel_id |  rel_name   | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
+--?.* database_id | database_name | rel_id |  rel_name   | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
--------------+---------------+--------+-------------+----------+--------+--------+----------+-----------+------------+----------
+--?.*-------------+---------------+--------+-------------+----------+--------+--------+----------+-----------+------------+----------
 --?.*           0 |               |   1262 | pg_database |       27 | (0, 4) | (0, 4) |    10506 |        15 |  361410604 |        1
 (1 row)
 
 select * from gs_gsc_catalog_detail(-1, 1259) limit 1;
---?.* database_id | database_name | rel_id | rel_name | cache_id |  self   |  ctid   | infomask | infomask2 | hash_value | refcount
+--?.* database_id | database_name | rel_id | rel_name | cache_id |  self  |  ctid  | infomask | infomask2 | hash_value | refcount 
---?.*-------------+---------------+--------+----------+----------+---------+---------+----------+-----------+------------+----------
+--?.*-------------+---------------+--------+----------+----------+--------+--------+----------+-----------+------------+----------
 --?.*       16299 | postgres      |   1259 | pg_class |       84 | (7, 3) | (7, 3) |    10507 |        40 | 1520565747 |        0
 (1 row)
 
 select * from gs_gsc_catalog_detail(0, 1259) limit 1;
- database_id | database_name | rel_id | rel_name | cache_id | self | ctid | infomask | infomask2 | hash_value | refcount 
+--?.* database_id | database_name | rel_id | rel_name | cache_id | self | ctid | infomask | infomask2 | hash_value | refcount 
--------------+---------------+--------+----------+----------+------+------+----------+-----------+------------+----------
+--?.*-------------+---------------+--------+----------+----------+------+------+----------+-----------+------------+----------
 (0 rows)
 
 select * from gs_gsc_catalog_detail(1, 1259) limit 1;
- database_id | database_name | rel_id | rel_name | cache_id | self | ctid | infomask | infomask2 | hash_value | refcount 
+--?.* database_id | database_name | rel_id | rel_name | cache_id | self | ctid | infomask | infomask2 | hash_value | refcount 
--------------+---------------+--------+----------+----------+------+------+----------+-----------+------------+----------
+--?.*-------------+---------------+--------+----------+----------+------+------+----------+-----------+------------+----------
 (0 rows)
 
 select * from gs_gsc_catalog_detail(2, 1259) limit 1;
 ERROR:  dbOid doesn't exist.
 DETAIL:  dbOid is invalid, please pass valid dbOid.
 select * from gs_gsc_table_detail() limit 1;
- database_oid | database_name | reloid |         relname         | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids | attnames  | extinfo 
+--?.* database_oid | database_name | reloid |         relname         | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids | attnames  | extinfo 
---------------+---------------+--------+-------------------------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+-----------+---------
+--?.*--------------+---------------+--------+-------------------------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+-----------+---------
 --?.*            0 |               |   2676 | pg_authid_rolname_index |           11 |       0 |         0 |       10 |   403 |           0 |          1664 | f           | t           | i       |        1 | f          | f          | n        | f         | 'rolname' | 
 (1 row)
 
 select * from gs_gsc_table_detail(-1) limit 1;
- database_oid | database_name | reloid |         relname         | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids | attnames  | extinfo 
+--?.* database_oid | database_name | reloid |         relname         | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids | attnames  | extinfo 
---------------+---------------+--------+-------------------------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+-----------+---------
+--?.*--------------+---------------+--------+-------------------------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+-----------+---------
 --?.*            0 |               |   2676 | pg_authid_rolname_index |           11 |       0 |         0 |       10 |   403 |           0 |          1664 | f           | t           | i       |        1 | f          | f          | n        | f         | 'rolname' | 
 (1 row)
 
 select * from gs_gsc_table_detail(0) limit 1;
- database_oid | database_name | reloid |         relname         | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids | attnames  | extinfo 
+--?.* database_oid | database_name | reloid |         relname         | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids | attnames  | extinfo 
---------------+---------------+--------+-------------------------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+-----------+---------
+--?.*--------------+---------------+--------+-------------------------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+-----------+---------
 --?.*            0 |               |   2676 | pg_authid_rolname_index |           11 |       0 |         0 |       10 |   403 |           0 |          1664 | f           | t           | i       |        1 | f          | f          | n        | f         | 'rolname' | 
 (1 row)
 
 select * from gs_gsc_table_detail(1) limit 1;
- database_oid | database_name | reloid |         relname         | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids | attnames  | extinfo 
+--?.* database_oid | database_name | reloid |         relname         | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids | attnames  | extinfo 
---------------+---------------+--------+-------------------------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+-----------+---------
+--?.*--------------+---------------+--------+-------------------------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+-----------+---------
 --?.*            0 |               |   2676 | pg_authid_rolname_index |           11 |       0 |         0 |       10 |   403 |           0 |          1664 | f           | t           | i       |        1 | f          | f          | n        | f         | 'rolname' | 
 (1 row)
 
 select * from gs_gsc_table_detail(-1, 1262) limit 1;
- database_oid | database_name | reloid |   relname   | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids |                                                                                                   attnames                                                                                                   | extinfo 
+--?.* database_oid | database_name | reloid |   relname   | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids |                                                                                                   attnames                                                                                                   | extinfo 
---------------+---------------+--------+-------------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------
+--?.*--------------+---------------+--------+-------------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------
 --?.*            0 |               |   1262 | pg_database |           11 |    1248 |         0 |       10 |     0 |           0 |          1664 | t           | t           | r       |       15 | t          | f          | n        | f         | 'datname','datdba','encoding','datcollate','datctype','datistemplate','datallowconn','datconnlimit','datlastsysoid','datfrozenxid','dattablespace','datcompatibility','datacl','datfrozenxid64','datminmxid' | 
 (1 row)
 
 select * from gs_gsc_table_detail(0, 1262) limit 1;
- database_oid | database_name | reloid |   relname   | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids |                                                                                                   attnames                                                                                                   | extinfo 
+--?.* database_oid | database_name | reloid |   relname   | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids |                                                                                                   attnames                                                                                                   | extinfo 
---------------+---------------+--------+-------------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------
+--?.*--------------+---------------+--------+-------------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------
 --?.*            0 |               |   1262 | pg_database |           11 |    1248 |         0 |       10 |     0 |           0 |          1664 | t           | t           | r       |       15 | t          | f          | n        | f         | 'datname','datdba','encoding','datcollate','datctype','datistemplate','datallowconn','datconnlimit','datlastsysoid','datfrozenxid','dattablespace','datcompatibility','datacl','datfrozenxid64','datminmxid' | 
 (1 row)
 
 select * from gs_gsc_table_detail(1, 1262) limit 1;
- database_oid | database_name | reloid |   relname   | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids |                                                                                                   attnames                                                                                                   | extinfo 
+--?.* database_oid | database_name | reloid |   relname   | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids |                                                                                                   attnames                                                                                                   | extinfo 
---------------+---------------+--------+-------------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------
+--?.*--------------+---------------+--------+-------------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------
 --?.*            0 |               |   1262 | pg_database |           11 |    1248 |         0 |       10 |     0 |           0 |          1664 | t           | t           | r       |       15 | t          | f          | n        | f         | 'datname','datdba','encoding','datcollate','datctype','datistemplate','datallowconn','datconnlimit','datlastsysoid','datfrozenxid','dattablespace','datcompatibility','datacl','datfrozenxid64','datminmxid' | 
 (1 row)
 
 select * from gs_gsc_table_detail(-1, 1259) limit 1;
- database_oid | database_name | reloid | relname  | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids |                                                                                                                                                                                                                                                                              attnames                                                                                                                                                                                                                                                                               | extinfo 
+--?.* database_oid | database_name | reloid | relname  | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids |                                                                                                                                                                                                                                                                              attnames                                                                                                                                                                                                                                                                               | extinfo 
---------------+---------------+--------+----------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------
+--?.*--------------+---------------+--------+----------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------
 --?.*        16384 | regression    |   1259 | pg_class |           11 |      83 |         0 |       10 |     0 |           0 |             0 | t           | f           | r       |       40 | t          | f          | n        | f         | 'relname','relnamespace','reltype','reloftype','relowner','relam','relfilenode','reltablespace','relpages','reltuples','relallvisible','reltoastrelid','reltoastidxid','reldeltarelid','reldeltaidx','relcudescrelid','relcudescidx','relhasindex','relisshared','relpersistence','relkind','relnatts','relchecks','relhasoids','relhaspkey','relhasrules','relhastriggers','relhassubclass','relcmprs','relhasclusterkey','relrowmovement','parttype','relfrozenxid','relacl','reloptions','relreplident','relfrozenxid64','relbucket','relbucketkey','relminmxid' | 
 (1 row)
 
 select * from gs_gsc_table_detail(0, 1259) limit 1;
- database_oid | database_name | reloid | relname | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids | attnames | extinfo 
+--?.* database_oid | database_name | reloid | relname | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids | attnames | extinfo 
 --------------+---------------+--------+---------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+----------+---------
 (0 rows)
 
 select * from gs_gsc_table_detail(1, 1259) limit 1;
- database_oid | database_name | reloid | relname | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids | attnames | extinfo 
+--?.* database_oid | database_name | reloid | relname | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relhasindex | relisshared | relkind | relnatts | relhasoids | relhaspkey | parttype | tdhasuids | attnames | extinfo 
 --------------+---------------+--------+---------+--------------+---------+-----------+----------+-------+-------------+---------------+-------------+-------------+---------+----------+------------+------------+----------+-----------+----------+---------
 (0 rows)