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Posted to issues@ignite.apache.org by "Vladimir Ozerov (JIRA)" <ji...@apache.org> on 2016/05/26 08:48:12 UTC
[jira] [Created] (IGNITE-3203) Hadoop: permgen leak due to new
statistics thread in Hadoop.
Vladimir Ozerov created IGNITE-3203:
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Summary: Hadoop: permgen leak due to new statistics thread in Hadoop.
Key: IGNITE-3203
URL: https://issues.apache.org/jira/browse/IGNITE-3203
Project: Ignite
Issue Type: Task
Components: hadoop
Affects Versions: 1.5.0.final, 1.6
Reporter: Vladimir Ozerov
Assignee: Ivan Veselovsky
Fix For: 1.7
*Problem*
HADOOP-12829 ticket was implemented recently. It introduces special worker thread which monitors file system statistics. When several {{HadoopClassLoader}}s are created, one thread start for each of them. As this thread is never stopped, classloaders are never unloaded -> leak.
*Solution*
We need to investigate on how to hack into this process and prevent start of these thread. May be we will have to implement our own threads serving the same purpose.
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