[jira] [Created] (HDFS-5669) Storage#tryLock() should check for null before logging successfull message

[Vinay (JIRA)]

Vinay created HDFS-5669:
---------------------------

             Summary: Storage#tryLock() should check for null before logging 
successfull message
                 Key: HDFS-5669
                 URL: https://issues.apache.org/jira/browse/HDFS-5669
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: datanode
            Reporter: Vinay
            Assignee: Vinay


In the following code in Storage#tryLock(), there is a possibility that {{ 
file.getChannel().tryLock();}} returns null if the lock is acquired by some 
other process. In that case even though return value is null, a successfull 
message confuses.
{code}try {
        res = file.getChannel().tryLock();
        file.write(jvmName.getBytes(Charsets.UTF_8));
        LOG.info("Lock on " + lockF + " acquired by nodename " + jvmName);
      } catch(OverlappingFileLockException oe) {{code}



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