[jira] [Created] (HBASE-22917) Proc-WAL roll fails saying someone else has already created log

["Pankaj Kumar (Jira)" <ji...@apache.org>]

Pankaj Kumar created HBASE-22917:
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             Summary: Proc-WAL roll fails saying someone else has already created log
                 Key: HBASE-22917
                 URL: https://issues.apache.org/jira/browse/HBASE-22917
             Project: HBase
          Issue Type: Bug
          Components: proc-v2, wal
            Reporter: Pankaj Kumar
            Assignee: Pankaj Kumar


Recently we met a weird scenario where Procedure WAL roll fails as it is already created by someone else.

Later while going through the logs and code, observed that during Proc-WAL roll it failed to write the header. On failure file stream is just closed,
{code}
 try {
 ProcedureWALFormat.writeHeader(newStream, header);
 startPos = newStream.getPos();
 } catch (IOException ioe) {
 LOG.warn("Encountered exception writing header", ioe);
 newStream.close();
 return false;
 }
{code}

Since we don't delete the corrupted file or increment the *flushLogId*, so on each retry it is trying to create the same *flushLogId* file. However Hmaster failover will resolve this issue, but we should handle it.



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