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https://issues.apache.org/jira/browse/HADOOP-11368?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Wang updated HADOOP-11368:
---------------------------------
Resolution: Fixed
Fix Version/s: 2.7.0
Status: Resolved (was: Patch Available)
Committed to trunk and branch-2, TY again Arun.
> Fix SSLFactory truststore reloader thread leak in KMSClientProvider
> -------------------------------------------------------------------
>
> Key: HADOOP-11368
> URL: https://issues.apache.org/jira/browse/HADOOP-11368
> Project: Hadoop Common
> Issue Type: Bug
> Components: kms
> Affects Versions: 2.5.0
> Reporter: Arun Suresh
> Assignee: Arun Suresh
> Fix For: 2.7.0
>
> Attachments: HADOOP-11368.1.patch
>
>
> When a {{KMSClientProvider}} is initialized in _ssl_ mode, It initializes a
> {{SSLFactory}} object. This in-turn creates an instance of
> {{ReloadingX509TrustManager}} which, on initialization, starts a trust store
> reloader thread.
> It is noticed that over time, as a number of short lived
> {{KMSClientProvider}} instances are created and destroyed, the trust store
> manager threads are not interrupted/killed and remain in TIMED_WAITING state.
> A Thread dump shows multiple:
> {noformat}
> "Truststore reloader thread" daemon prio=10 tid=0x00007fb1cf942800 nid=0x4e99
> waiting on condition [0x00007fb0485f5000]
> java.lang.Thread.State: TIMED_WAITING (sleeping)
> at java.lang.Thread.sleep(Native Method)
> at
> org.apache.hadoop.security.ssl.ReloadingX509TrustManager.run(ReloadingX509TrustManager.java:189)
> at java.lang.Thread.run(Thread.java:662)
> Locked ownable synchronizers:
> - None
> {noformat}
>
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