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Posted to common-issues@hadoop.apache.org by "Arun Suresh (JIRA)" <ji...@apache.org> on 2014/12/09 08:57:12 UTC

[jira] [Updated] (HADOOP-11368) Fix OutOfMemory caused due to leaked trustStore reloader thread in KMSClientProvider

     [ https://issues.apache.org/jira/browse/HADOOP-11368?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arun Suresh updated HADOOP-11368:
---------------------------------
    Attachment: HADOOP-11368.1.patch

Uploading patch to fix this.

> Fix OutOfMemory caused due to leaked trustStore reloader thread 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
>         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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