[jira] [Commented] (HIVE-27182) tez_union_with_udf.q with TestMiniTezCliDriver is flaky

["Stamatis Zampetakis (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-27182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17706803#comment-17706803 ] 

Stamatis Zampetakis commented on HIVE-27182:
--------------------------------------------

I doubt that the specific test is to blame. There is probably a memory leak somewhere causing this kind of failures and the last tests running in a split are more likely to fail. I didn't cross check but I would bet that tez_union_with_udf runs towards the end of the split.

> tez_union_with_udf.q with TestMiniTezCliDriver is flaky
> -------------------------------------------------------
>
>                 Key: HIVE-27182
>                 URL: https://issues.apache.org/jira/browse/HIVE-27182
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Ayush Saxena
>            Priority: Major
>
> Looks like memory issue:
> {noformat}
> < Caused by: org.apache.hive.com.esotericsoftware.kryo.KryoException: java.lang.OutOfMemoryError: GC overhead limit exceeded
> < Serialization trace:
> < genericUDF (org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc)
> < colExprMap (org.apache.hadoop.hive.ql.plan.SelectDesc)
> < conf (org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator)
> < childOperators (org.apache.hadoop.hive.ql.exec.vector.VectorLimitOperator)
> < childOperators (org.apache.hadoop.hive.ql.exec.TableScanOperator)
> {noformat}
> Ref: http://ci.hive.apache.org/job/hive-precommit/job/PR-4155/2/testReport/junit/org.apache.hadoop.hive.cli/TestMiniTezCliDriver/Testing___split_20___PostProcess___testCliDriver_tez_union_with_udf_/



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