Michael Stack created HBASE-24072:
-------------------------------------
Summary: Nightlies reporting OutOfMemoryError: unable to create
new native thread
Key: HBASE-24072
URL: https://issues.apache.org/jira/browse/HBASE-24072
Project: HBase
Issue Type: Bug
Components: test
Reporter: Michael Stack
Seeing this kind of thing in nightly...
{code}
java.lang.RuntimeException: java.lang.OutOfMemoryError: unable to create new
native thread
at
org.apache.hadoop.hbase.mapreduce.TestMultithreadedTableMapper.beforeClass(TestMultithreadedTableMapper.java:83)
Caused by: java.lang.OutOfMemoryError: unable to create new native thread
at
org.apache.hadoop.hbase.mapreduce.TestMultithreadedTableMapper.beforeClass(TestMultithreadedTableMapper.java:83)
{code}
Chatting w/ Nick and Huaxiang, doing the math, we are likely oversubscribing
our docker container. It is set to 20G (The hosts are 48G). Fork count is 0.5C
on a 16 CPU machine which is 8 *2.8G our current forked jvm size. Add the maven
4G and we could be over the top.
Play w/ downing the fork size (in earlier study we didn't seem to need this
much RAM when running a fat long test). Let me also take th ms off the mvn
allocation to see if that helps.
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