Jonathan Hurley created AMBARI-7221:
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Summary: Ambari Server REST API Memory Leak
Key: AMBARI-7221
URL: https://issues.apache.org/jira/browse/AMBARI-7221
Project: Ambari
Issue Type: Bug
Components: ambari-server
Affects Versions: 1.6.0
Environment: Oracle JDK 1.7.0_45 on CentOS 6.5 64-bit
SLES 11 SP1 64-bit with Oracle JDK 1.7
Reporter: Jonathan Hurley
Assignee: Jonathan Hurley
Priority: Critical
Fix For: 1.7.0
PROBLEM: When running many 1000's of REST API calls, the heap memory usage of
the Ambari server slowly goes up. Forcing a garbage collection will reclaim
some of the heap but it never goes back down to its starting level. Eventually
the JVM is forced to do a full GC which hangs the Ambari server for several
minutes and, again, doesn't free all of the heap used by the API calls.
The Ambari server stopped working with out of heap space messages.
STEPS TO REPRODUCE: I was able to reproduce the issue using this simple script
run on the Ambari server machine:
{{while [ 1 ]; do curl -u admin:admin http://localhost:8080/api/v1/clusters;
done}}
ACTUAL BEHAVIOR: Ambari server heap memory usage increases over time when the
REST API is used repeatedly. GC does not free it.
EXPECTED BEHAVIOR: Memory used by REST API connections should be released after
a GC.
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