natas_hw
/
cassandra
mirror of https://github.com/apache/cassandra
0
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Remove hostname field from both tables since it's already in the primary key

This commit is contained in:
nivy 2026-07-31 15:28:00 -07:00
parent 172099f4a8
commit 4b0aead9bd
2 changed files with 9 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
doc/modules/cassandra/pages/new/virtualtables.adoc
View File

@ -107,15 +107,15 @@ We shall discuss some of the virtual tables in more detail next.
The `clients` virtual table lists all active connections (connected
clients) including their ip address, port, connection stage, driver
name, driver version, hostname, protocol version, request count, ssl
name, driver version, protocol version, request count, ssl
enabled, ssl protocol and user name:
....
cqlsh:system_views> select * from system_views.clients;
address | port | connection_stage | driver_name | driver_version | hostname | protocol_version | request_count | ssl_cipher_suite | ssl_enabled | ssl_protocol | username
-----------+-------+------------------+-------------+----------------+-----------+------------------+---------------+------------------+-------------+--------------+-----------
127.0.0.1 | 50628 | ready | null | null | localhost | 4 | 55 | null | False | null | anonymous
127.0.0.1 | 50630 | ready | null | null | localhost | 4 | 70 | null | False | null | anonymous
address | port | connection_stage | driver_name | driver_version | protocol_version | request_count | ssl_cipher_suite | ssl_enabled | ssl_protocol | username
-----------+-------+------------------+-------------+----------------+------------------+---------------+------------------+-------------+--------------+-----------
127.0.0.1 | 50628 | ready | null | null | 4 | 55 | null | False | null | anonymous
127.0.0.1 | 50630 | ready | null | null | 4 | 70 | null | False | null | anonymous
(2 rows)
....
@ -139,7 +139,6 @@ CREATE TABLE system_views.clients (
connection_stage text,
driver_name text,
driver_version text,
hostname text,
port int,
protocol_version int,
request_count bigint,
@ -401,10 +400,10 @@ cqlsh> SELECT * FROM clients LIMIT 2;
[source, cql]
----
address | port | connection_stage | driver_name | driver_version | hostname | protocol_version | request_count | ssl_cipher_suite | ssl_enabled | ssl_protocol | username
-----------+-------+------------------+------------------------+----------------+-----------+------------------+---------------+------------------+-------------+--------------+-----------
127.0.0.1 | 37308 | ready | DataStax Python Driver | 3.21.0.post0 | localhost | 4 | 17 | null | False | null | anonymous
127.0.0.1 | 37310 | ready | DataStax Python Driver | 3.21.0.post0 | localhost | 4 | 8 | null | False | null | anonymous
address | port | connection_stage | driver_name | driver_version | protocol_version | request_count | ssl_cipher_suite | ssl_enabled | ssl_protocol | username
-----------+-------+------------------+------------------------+----------------+------------------+---------------+------------------+-------------+--------------+-----------
127.0.0.1 | 37308 | ready | DataStax Python Driver | 3.21.0.post0 | 4 | 17 | null | False | null | anonymous
127.0.0.1 | 37310 | ready | DataStax Python Driver | 3.21.0.post0 | 4 | 8 | null | False | null | anonymous
(2 rows)
----

3
src/java/org/apache/cassandra/db/virtual/ClientsTable.java
View File

@ -29,7 +29,6 @@ final class ClientsTable extends AbstractVirtualTable
{
private static final String ADDRESS = "address";
private static final String PORT = "port";
private static final String HOSTNAME = "hostname";
private static final String USERNAME = "username";
private static final String CONNECTION_STAGE = "connection_stage";
private static final String PROTOCOL_VERSION = "protocol_version";
@ -48,7 +47,6 @@ final class ClientsTable extends AbstractVirtualTable
.partitioner(new LocalPartitioner(InetAddressType.instance))
.addPartitionKeyColumn(ADDRESS, InetAddressType.instance)
.addClusteringColumn(PORT, Int32Type.instance)
.addRegularColumn(HOSTNAME, UTF8Type.instance)
.addRegularColumn(USERNAME, UTF8Type.instance)
.addRegularColumn(CONNECTION_STAGE, UTF8Type.instance)
.addRegularColumn(PROTOCOL_VERSION, Int32Type.instance)
@ -71,7 +69,6 @@ final class ClientsTable extends AbstractVirtualTable
InetSocketAddress remoteAddress = client.remoteAddress();
result.row(remoteAddress.getAddress(), remoteAddress.getPort())
.column(HOSTNAME, remoteAddress.getHostName())
.column(USERNAME, client.username().orElse(null))
.column(CONNECTION_STAGE, client.stage().toString().toLowerCase())
.column(PROTOCOL_VERSION, client.protocolVersion())