[jira] [Created] (HDFS-11879) Fix JN sync interval in case of exception

["Hanisha Koneru (JIRA)" <ji...@apache.org>]

Hanisha Koneru created HDFS-11879:
-------------------------------------

             Summary: Fix JN sync interval in case of exception
                 Key: HDFS-11879
                 URL: https://issues.apache.org/jira/browse/HDFS-11879
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Hanisha Koneru
            Assignee: Hanisha Koneru


Currently, if there is an exception in _JournalNodeSyncer#syncJournal_, the sync daemon does not wait the specified interval before the next sync attempt. 

In the following code block in _JournalNodeSyncer#startSyncJournalsDaemon_, Thread.sleep should be moved to a separate try catch block from _syncJournal()_ to avoid skipping it in case of exception.
{code}
        try {
          if (!journal.isFormatted()) {
            LOG.warn("Journal cannot sync. Not formatted.");
          } else {
            syncJournals();
          }
          Thread.sleep(journalSyncInterval);
        } catch (Throwable t) {
           .......
{code}



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