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https://issues.apache.org/jira/browse/PIG-4603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14588620#comment-14588620
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Gleb Smirnov commented on PIG-4603:
-----------------------------------
The issue was found by Plumbr. One of our customers is running Pig, and faced
this problem on a redeploy.
> Classloader leak in SpillableMemoryManager
> ------------------------------------------
>
> Key: PIG-4603
> URL: https://issues.apache.org/jira/browse/PIG-4603
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.15.0
> Reporter: Gleb Smirnov
> Assignee: Rohini Palaniswamy
> Fix For: 0.16.0
>
>
> In the constructor of {{SpillableMemoryManager}}, a {{NotificationListener}}
> is added to the {{MemoryMXBean}}. This listener is never removed, even if the
> application is re-deployed.
> This results in the instance {{SpillableMemoryManager}} being still reachable
> after a redeploy. This results in its class being reachable, which results in
> the classloader being reachable, along with all the classes in it.
> This leads to metaspace OutOfMemoryErrors.
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