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