[
https://issues.apache.org/jira/browse/HIVE-17911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16221667#comment-16221667
]
BELUGA BEHR commented on HIVE-17911:
------------------------------------
Need to investigate the following:
{code}
2017-10-26T14:49:56,936 ERROR [main] exec.DDLTask: Failed
org.apache.hadoop.hive.ql.metadata.HiveException: MetaException(message:Trying
to define foreign key but there are no primary keys or unique keys for
referenced table)
at
org.apache.hadoop.hive.ql.metadata.Hive.addForeignKey(Hive.java:4677)
~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at
org.apache.hadoop.hive.ql.exec.DDLTask.addConstraints(DDLTask.java:4360)
[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.exec.DDLTask.execute(DDLTask.java:413)
[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:206)
[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at
org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:97)
[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:2276)
[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1906)
[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1623)
[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1362)
[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1352)
[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
{code}
> org.apache.hadoop.hive.metastore.ObjectStore - Tune Up
> ------------------------------------------------------
>
> Key: HIVE-17911
> URL: https://issues.apache.org/jira/browse/HIVE-17911
> Project: Hive
> Issue Type: Improvement
> Components: Hive
> Affects Versions: 3.0.0
> Reporter: BELUGA BEHR
> Assignee: BELUGA BEHR
> Priority: Minor
> Attachments: HIVE-17911.1.patch
>
>
> # Remove unused variables
> # Add logging parameterization
> # Use CollectionUtils.isEmpty/isNotEmpty to simplify and unify collection
> empty check (and always use null check)
> # Minor tweaks
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