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https://issues.apache.org/jira/browse/HIVE-23756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17270318#comment-17270318
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Kenrick Veit commented on HIVE-23756:
-------------------------------------
Is it an acceptable work around to change these two foreign key constraints in
the metastore to be on delete cascade?
> drop table command fails with MySQLIntegrityConstraintViolationException:
> -------------------------------------------------------------------------
>
> Key: HIVE-23756
> URL: https://issues.apache.org/jira/browse/HIVE-23756
> Project: Hive
> Issue Type: Bug
> Reporter: Ganesha Shreedhara
> Assignee: Ganesha Shreedhara
> Priority: Major
> Attachments: HIVE-23756.1.patch
>
>
> Drop table command fails intermittently with the following exception.
> {code:java}
> Caused by: java.sql.BatchUpdateException: Cannot delete or update a parent
> row: a foreign key constraint fails ("metastore"."COLUMNS_V2", CONSTRAINT
> "COLUMNS_V2_FK1" FOREIGN KEY ("CD_ID") REFERENCES "CDS" ("CD_ID")) App > at
> com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:1815)at
> com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1277)
> Appat
> org.datanucleus.store.rdbms.ParamLoggingPreparedStatement.executeBatch(ParamLoggingPreparedStatement.java:372)
> at
> org.datanucleus.store.rdbms.SQLController.processConnectionStatement(SQLController.java:628)
> at
> org.datanucleus.store.rdbms.SQLController.getStatementForUpdate(SQLController.java:207)
> at
> org.datanucleus.store.rdbms.SQLController.getStatementForUpdate(SQLController.java:179)
> at
> org.datanucleus.store.rdbms.scostore.JoinMapStore.clearInternal(JoinMapStore.java:901)
> ... 36 more
> Caused by:
> com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException:
> Cannot delete or update a parent row: a foreign key constraint fails
> ("metastore"."COLUMNS_V2", CONSTRAINT "COLUMNS_V2_FK1" FOREIGN KEY ("CD_ID")
> REFERENCES "CDS" ("CD_ID"))
> at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> at com.mysql.jdbc.Util.handleNewInstance(Util.java:377)
> at com.mysql.jdbc.Util.getInstance(Util.java:360)
> at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:971)
> at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3887)
> at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3823){code}
> Although HIVE-19994 resolves this issue, the FK constraint name of COLUMNS_V2
> table specified in package.jdo file is not same as the FK constraint name
> used while creating COLUMNS_V2 table ([Ref|#L60]]).
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