[jira] [Created] (HDFS-7283) Bump DataNode OOM log from WARN to ERROR

[Stephen Chu (JIRA)]

Stephen Chu created HDFS-7283:
---------------------------------

             Summary: 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


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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