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https://issues.apache.org/jira/browse/HDFS-7283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14183127#comment-14183127
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Stephen Chu commented on HDFS-7283:
-----------------------------------
Thanks again, [~wheat9].
> Bump DataNode OOM log from WARN to ERROR
> ----------------------------------------
>
> Key: HDFS-7283
> URL: https://issues.apache.org/jira/browse/HDFS-7283
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Affects Versions: 2.0.0-alpha
> Reporter: Stephen Chu
> Assignee: Stephen Chu
> Priority: Trivial
> Labels: supportability
> Fix For: 2.7.0
>
> Attachments: HDFS-7283.1.patch
>
>
> When the DataNode OOMs, it logs the following WARN message which should be
> bumped up to ERROR because DataNode OOM often leads to DN process abortion.
> {code}
> WARN org.apache.hadoop.hdfs.server.datanode.DataNode: DataNode is out of
> memory. Will retry in 30 seconds.
> 4751 java.lang.OutOfMemoryError: unable to create new native thread"
> {code}
> Thanks to Roland Teague for identifying this.
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