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Posted to yarn-issues@hadoop.apache.org by "Ajay Jadhav (JIRA)" <ji...@apache.org> on 2017/02/14 18:29:41 UTC
[jira] [Updated] (YARN-6188) Fix OOM issue with
decommissioningNodesWatcher in the case of clusters with large number of
nodes
[ https://issues.apache.org/jira/browse/YARN-6188?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ajay Jadhav updated YARN-6188:
------------------------------
Description:
LogDecommissioningNodesStatus method in DecommissioningNodesWatcher uses StringBuilder to append status of all
decommissioning nodes for logging purpose.
In the case of large number of decommissioning nodes, this leads to OOM exception. The fix scopes StringBuilder so that in case of memory pressure, GC can kick in and free up the memory.
This is supposed to fix a bug introduced in https://issues.apache.org/jira/browse/YARN-4676
was:
LogDecommissioningNodesStatus method in DecommissioningNodesWatcher uses StringBuilder to append status of all
decommissioning nodes for logging purpose.
In the case of large number of decommissioning nodes, this leads to OOM exception. The fix scopes StringBuilder so that in case
of memory pressure, GC can kick in and free up the memory.
This is supposed to fix a bug introduced in https://issues.apache.org/jira/browse/YARN-4676
> Fix OOM issue with decommissioningNodesWatcher in the case of clusters with large number of nodes
> -------------------------------------------------------------------------------------------------
>
> Key: YARN-6188
> URL: https://issues.apache.org/jira/browse/YARN-6188
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 2.9.0
> Reporter: Ajay Jadhav
> Fix For: 2.9.0, 3.0.0-alpha1
>
>
> LogDecommissioningNodesStatus method in DecommissioningNodesWatcher uses StringBuilder to append status of all
> decommissioning nodes for logging purpose.
> In the case of large number of decommissioning nodes, this leads to OOM exception. The fix scopes StringBuilder so that in case of memory pressure, GC can kick in and free up the memory.
> This is supposed to fix a bug introduced in https://issues.apache.org/jira/browse/YARN-4676
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