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https://issues.apache.org/jira/browse/SOLR-6213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14047435#comment-14047435
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Dawid Weiss commented on SOLR-6213:
-----------------------------------
Note that stack overflows, much like running next to an OOM, is pretty much
unfixable in Java since there's no control over the stack size and object
allocation. Writing fully preallocated code is I think impossible (any call
outside of the code requires a stack frame, so there'd be no way to communicate
with the outside world).
> StackOverflowException in Solr cloud's leader election
> ------------------------------------------------------
>
> Key: SOLR-6213
> URL: https://issues.apache.org/jira/browse/SOLR-6213
> Project: Solr
> Issue Type: Bug
> Affects Versions: 5.0, 4.10
> Reporter: Dawid Weiss
> Priority: Critical
>
> This is what's causing test hangs (at least on FreeBSD, LUCENE-5786),
> possibly on other machines too. The problem is stack overflow from looped
> calls in:
> {code}
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:221)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.rejoinLeaderElection(ElectionContext.java:448)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.runLeaderProcess(ElectionContext.java:212)
> >
> org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:163)
> >
> org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:125)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:313)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:221)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.rejoinLeaderElection(ElectionContext.java:448)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.runLeaderProcess(ElectionContext.java:212)
> >
> org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:163)
> >
> org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:125)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:313)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:221)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.rejoinLeaderElection(ElectionContext.java:448)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.runLeaderProcess(ElectionContext.java:212)
> >
> org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:163)
> >
> org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:125)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:313)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:221)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.rejoinLeaderElection(ElectionContext.java:448)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.runLeaderProcess(ElectionContext.java:212)
> >
> org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:163)
> >
> org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:125)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:313)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:221)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.rejoinLeaderElection(ElectionContext.java:448)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.runLeaderProcess(ElectionContext.java:212)
> >
> org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:163)
> >
> org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:125)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:313)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:221)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.rejoinLeaderElection(ElectionContext.java:448)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.runLeaderProcess(ElectionContext.java:212)
> >
> org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:163)
> >
> org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:125)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:313)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:221)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.rejoinLeaderElection(ElectionContext.java:448)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.runLeaderProcess(ElectionContext.java:212)
> >
> org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:163)
> >
> org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:125)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:313)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:221)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.rejoinLeaderElection(ElectionContext.java:448)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.runLeaderProcess(ElectionContext.java:212)
> >
> org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:163)
> >
> org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:125)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:313)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:221)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.rejoinLeaderElection(ElectionContext.java:448)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.runLeaderProcess(ElectionContext.java:212)
> >
> org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:163)
> >
> org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:125)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:313)
> > org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:221)
> >
> org.apache.solr.cloud.ShardLeaderElectionContext.rejoinLeaderElection(ElectionContext.java:448)
> {code}
> These routines attempt to log information to loggers, which in turn attempts
> to serialize messages back to the master (test process). When the stack is
> exhausted the serialization process fails and breaks the communication with
> the master test node.
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