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From "Brahma Reddy Battula (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-7739) ZKFC - transitionToActive is indefinitely waiting to complete fenceOldActive
Date Thu, 05 Feb 2015 14:34:34 GMT
Brahma Reddy Battula created HDFS-7739:
------------------------------------------

             Summary: ZKFC - transitionToActive is indefinitely waiting to complete fenceOldActive
                 Key: HDFS-7739
                 URL: https://issues.apache.org/jira/browse/HDFS-7739
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: auto-failover
    Affects Versions: 2.6.0
            Reporter: Brahma Reddy Battula
            Assignee: Brahma Reddy Battula
            Priority: Critical


 *Scenario:* 

One of the cluster disk got full and ZKFC making tranisionToAcitve ,To fence old active node
it needs to execute the command and wait for tge result, since disk got full, strempumper
thread will be indefinitely waiting( Even after free the disk also, it will not come out)...

Please check the attached thread dump for ZKFC..

Better to maintain the timeout for stream-pumper thread..

{code}
protected void pump() throws IOException {
    InputStreamReader inputStreamReader = new InputStreamReader(stream);
    BufferedReader br = new BufferedReader(inputStreamReader);
    String line = null;
    while ((line = br.readLine()) != null) {
      if (type == StreamType.STDOUT) {
        log.info(logPrefix + ": " + line);
      } else {
        log.warn(logPrefix + ": " + line);          
      }
{code}




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