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

Document new table name length limit 

CASSANDRA-20389 implemented limit on table name length of 222
characters. This commit updates the documentation to reflect this.

It also adds an assert in CreateTableValidationTest to ensure that the
documented limit matches the actual constant.

patch by Ruslan Fomkin; reviewed by Brad Schoening, Dmitry Konstantinov for CASSANDRA-20914
This commit is contained in:
Ruslan Fomkin 2025-10-28 12:11:33 +01:00 committed by Stefan Miklosovic
parent aa0e2f1631
commit 2d7e99f7b9
No known key found for this signature in database
GPG Key ID: 32F35CB2F546D93E
2 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
doc/modules/cassandra/pages/cql/ddl.adoc
View File

@ -22,8 +22,10 @@ include::example$BNF/ks_table.bnf[]
----
Both keyspace and table name should be comprised of only alphanumeric
characters, cannot be empty and are limited in size to 48 characters
(that limit exists mostly to avoid filenames (which may include the
or underscore characters and cannot be empty.
Keyspace name is limited in size to 48 characters, while
table name is limited in size to 222 characters
(those limits exist mostly to avoid filenames (which may include the
keyspace and table name) to go over the limits of certain file systems).
By default, keyspace and table names are case-insensitive (`myTable` is
equivalent to `mytable`) but case sensitivity can be forced by using

4
test/unit/org/apache/cassandra/schema/CreateTableValidationTest.java
View File

@ -40,6 +40,7 @@ import static org.apache.cassandra.schema.SchemaConstants.NAME_LENGTH;
import static org.apache.cassandra.schema.SchemaConstants.TABLE_NAME_LENGTH;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
@ -170,6 +171,9 @@ public class CreateTableValidationTest extends CQLTester
String tableName = StringUtils.repeat("t", FILENAME_LENGTH - tableIdSuffix);
String tooLongTableName = StringUtils.repeat("l", FILENAME_LENGTH - tableIdSuffix + 1);
// Assert that the documented value of 222 corresponds to the actual constant.
assertEquals(222, TABLE_NAME_LENGTH);
execute(String.format("CREATE KEYSPACE %s with replication = " +
"{ 'class' : 'SimpleStrategy', 'replication_factor' : 1 }",
keyspaceName));