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https://issues.apache.org/jira/browse/IMPALA-7442?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong resolved IMPALA-7442.
-----------------------------------
Resolution: Fixed
Fix Version/s: Impala 3.1.0
> test_semi_joins_exhaustive occasionally fails
> ---------------------------------------------
>
> Key: IMPALA-7442
> URL: https://issues.apache.org/jira/browse/IMPALA-7442
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Affects Versions: Impala 3.1.0
> Reporter: Michael Brown
> Assignee: Tim Armstrong
> Priority: Critical
> Labels: flakey
> Fix For: Impala 3.1.0
>
> Attachments: profile.txt.gz
>
>
> This test occasionally fails with a very large error message, the top of
> which is shared below. I will attached a gzip profile of my local
> reproduction. I've seen this test fail twice on a *release build* of Impala.
> The reproduction and profile I shared below was also with a release build.
> {noformat}
> Cannot perform hash join at node with id 4. Repartitioning did not reduce the
> size of a spilled partition. Repartitioning level 1. Number of rows 60280000:
> PartitionedHashJoinNode (id=4 op=2 state=RepartitioningBuild
> #spilled_partitions=0)
> PhjBuilder: Hash partitions: 16:
> {noformat}
> I was able to reproduce this by doing:
> {noformat}
> for f in $(seq 100)
> do
> impala-py.test -k test_semi_joins_exhaustive
> tests/query_test/test_join_queries.py --workload_exploration_strategy
> functional-query:exhaustive -m "not execute_serially" || { echo $f; break; }
> done
> {noformat}
> If you want more noise but a faster reproduction, try:
> {noformat}
> impala-py.test -k test_semi_joins_exhaustive
> tests/query_test/test_join_queries.py --workload_exploration_strategy
> functional-query:exhaustive -m "not execute_serially" -n4
> {noformat}
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