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https://issues.apache.org/jira/browse/HIVE-11165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14621262#comment-14621262
]
Sergey Shelukhin commented on HIVE-11165:
-----------------------------------------
I have seen the following callstack that may be related, after ctrl-c-ing
HiveServer2 that was stuck forever
{noformat}
Exception in thread "HiveServer2-Handler-Pool: Thread-81"
java.lang.OutOfMemoryError: GC overhead limit exceeded
at java.util.HashMap.resize(HashMap.java:703)
at java.util.HashMap.putVal(HashMap.java:662)
at java.util.HashMap.put(HashMap.java:611)
at java.util.HashSet.add(HashSet.java:219)
at
org.apache.calcite.util.graph.BreadthFirstIterator.reachable(BreadthFirstIterator.java:61)
at org.apache.calcite.plan.hep.HepPlanner.collectGarbage(HepPlanner.java:900)
at
org.apache.calcite.plan.hep.HepPlanner.getGraphIterator(HepPlanner.java:427)
at org.apache.calcite.plan.hep.HepPlanner.applyRules(HepPlanner.java:400)
at
org.apache.calcite.plan.hep.HepPlanner.executeInstruction(HepPlanner.java:285)
at
org.apache.calcite.plan.hep.HepInstruction$RuleCollection.execute(HepInstruction.java:72)
at org.apache.calcite.plan.hep.HepPlanner.executeProgram(HepPlanner.java:207)
at org.apache.calcite.plan.hep.HepPlanner.findBestExp(HepPlanner.java:194)
at
org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.hepPlan(CalcitePlanner.java:1035)
at
org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.applyPreJoinOrderingTransforms(CalcitePlanner.java:964)
...
{noformat}
> Calcite planner might have a thread-safety issue compiling in parallel
> ----------------------------------------------------------------------
>
> Key: HIVE-11165
> URL: https://issues.apache.org/jira/browse/HIVE-11165
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Affects Versions: 2.0.0
> Reporter: Gopal V
> Attachments: RunJar-2015-06-30.snapshot
>
>
> After about 6 minutes trying to plan a query, the HiveServer2 was killed to
> restore functionality to a test run.
> The HEP planner is stuck on a TopologicalOrder traversal and there were no
> queries being fed into the HiveServer2 after it got stuck.
> TPC-DS query13 was the query in question, at 4 way parallel, which triggered
> the issue.
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