[jira] [Created] (HDFS-8894) Set SO_KEEPALIVE on DN server sockets

[Nathan Roberts (JIRA)]

Nathan Roberts created HDFS-8894:
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             Summary: Set SO_KEEPALIVE on DN server sockets
                 Key: HDFS-8894
                 URL: https://issues.apache.org/jira/browse/HDFS-8894
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: datanode
    Affects Versions: 2.7.1
            Reporter: Nathan Roberts


SO_KEEPALIVE is not set on things like datastreamer sockets which can cause 
lingering ESTABLISHED sockets when there is a network glitch.



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