[jira] [Created] (HBASE-11200) AsyncWriter of FSHLog might throw ArrayIndexOutOfBoundsException

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

cuijianwei created HBASE-11200:
----------------------------------

             Summary: AsyncWriter of FSHLog might throw ArrayIndexOutOfBoundsException
                 Key: HBASE-11200
                 URL: https://issues.apache.org/jira/browse/HBASE-11200
             Project: HBase
          Issue Type: Bug
          Components: wal
    Affects Versions: 0.98.2
            Reporter: cuijianwei
            Priority: Minor


AsyncWriter of FSHLog might throw ArrayIndexOutOfBoundsException because of the following code in AsyncWriter#run():
{code}
             }
           }
           if (!hasIdleSyncer) {
            int idx = (int)this.lastWrittenTxid % asyncSyncers.length;
             asyncSyncers[idx].setWrittenTxid(this.lastWrittenTxid);
           }
         }
{code}
In obove code, "this.lastWrittenTxid % asyncSyncers.length" might become negative when this.lastWrittenTxid is bigger than Interger.MAX_VALUE where this.lastWrittenTxid  is a long. The attachment gives a quick fix.



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