Enis Soztutar commented on HBASE-18541:

bq. The following command doesn't print stack trace when test fails:
When the program crashes, there is usually a core dump file. You can use gdb to 
get the stack trace. You can use something like: 
gdb ./buck-out/gen/core/multi-retry-test core.XXX

Then within gdb, you can use {{bt}} or {{thread apply all bt}} to get the 

> [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. 

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