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Ted Yu commented on HBASE-18541: -------------------------------- >From the above stack trace, it seems the segfault came from >UserGroupInformation.hashCode(). >From UserGroupInformation : {code} public int hashCode() { return realUser.hashCode(); } {code} Going to find out how System.identityHashCode() comes into play. > [C++] Segfaults from JNI > ------------------------ > > Key: HBASE-18541 > URL: https://issues.apache.org/jira/browse/HBASE-18541 > Project: HBase > Issue Type: Sub-task > Reporter: Enis Soztutar > Assignee: Ted Yu > > retry-test and multi-retry-test fails flakily when run with > {code} > buck test --all --no-results-cache > {code} > or when run in a loop: > {code} > for i in `seq 1 10`; do buck test --no-results-cache core:retry-test || break > 1; done > {code} > The problem seems to be within the JNI internals and usually happens at the > create table method call. I was not able to inspect much, but the comments in > our mini-cluster indicate that we may need to use global references instead > of local ones. I suspect the problem happens when there is a GC run for the > test since the failure happens usually after some time (but almost always in > create table method). > [~ted_yu] do you mind taking a look at this. -- This message was sent by Atlassian JIRA (v6.4.14#64029)