[jira] [Created] (AMBARI-7221) Ambari Server REST API Memory Leak

["Jonathan Hurley (JIRA)" <ji...@apache.org>]

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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