[HIVE-21614] Derby does not support CLOB comparisons

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.3.4, 3.0.0
• Component/s: Metastore
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: Vlad Rozov
• Created: 15/Apr/19 15:07
• Updated: 14/Feb/23 03:17

Description

HiveMetaStoreClient.listTableNamesByFilter() with non empty filter causes exception with Derby DB:

Caused by: ERROR 42818: Comparisons between 'CLOB (UCS_BASIC)' and 'CLOB (UCS_BASIC)' are not supported. Types must be comparable. String types must also have matching collation. If collation does not match, a possible solution is to cast operands to force them to the default collation (e.g. SELECT tablename FROM sys.systables WHERE CAST(tablename AS VARCHAR(128)) = 'T1')
	at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
	at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
	at org.apache.derby.impl.sql.compile.BinaryComparisonOperatorNode.bindComparisonOperator(Unknown Source)
	at org.apache.derby.impl.sql.compile.BinaryComparisonOperatorNode.bindExpression(Unknown Source)
	at org.apache.derby.impl.sql.compile.BinaryOperatorNode.bindExpression(Unknown Source)
	at org.apache.derby.impl.sql.compile.BinaryLogicalOperatorNode.bindExpression(Unknown Source)
	at org.apache.derby.impl.sql.compile.AndNode.bindExpression(Unknown Source)
	at org.apache.derby.impl.sql.compile.SelectNode.bindExpressions(Unknown Source)
	at org.apache.derby.impl.sql.compile.DMLStatementNode.bindExpressions(Unknown Source)
	at org.apache.derby.impl.sql.compile.DMLStatementNode.bind(Unknown Source)
	at org.apache.derby.impl.sql.compile.CursorNode.bindStatement(Unknown Source)
	at org.apache.derby.impl.sql.GenericStatement.prepMinion(Unknown Source)
	at org.apache.derby.impl.sql.GenericStatement.prepare(Unknown Source)
	at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.prepareInternalStatement(Unknown Source)
	... 42 more

Issue Links

• is broken by: HIVE-12274 Increase width of columns used for general configuration in the metastore.
• links to: GitHub Pull Request #2484
• links to: GitHub Pull Request #3720