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Posted to issues@hive.apache.org by "Piotr Findeisen (JIRA)" <ji...@apache.org> on 2019/05/28 10:22:00 UTC
[jira] [Commented] (HIVE-21614) Derby does not support CLOB
comparisons
[ https://issues.apache.org/jira/browse/HIVE-21614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16849571#comment-16849571 ]
Piotr Findeisen commented on HIVE-21614:
----------------------------------------
This breaks {{get_table_names_by_filter}} Metastore thrift call when using {{hive_filter_field_params__}} prefix ({{HIVE_FILTER_FIELD_PARAMS}})
Like in https://github.com/apache/hive/blob/fcd4721591e0ba7d9ba24821f9528dadb7ec16fd/standalone-metastore/metastore-common/src/main/thrift/hive_metastore.thrift#L2019-L2020
> Derby does not support CLOB comparisons
> ---------------------------------------
>
> Key: HIVE-21614
> URL: https://issues.apache.org/jira/browse/HIVE-21614
> Project: Hive
> Issue Type: Bug
> Components: Metastore
> Affects Versions: 3.0.0, 2.3.4
> Reporter: Vlad Rozov
> Priority: Major
>
> HiveMetaStoreClient.listTableNamesByFilter() with non empty filter causes exception with Derby DB:
> {noformat}
> 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
> {noformat}
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