[jira] [Created] (HBASE-9796) npe in RegionServerCallable

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

stack created HBASE-9796:
----------------------------

             Summary: npe in RegionServerCallable
                 Key: HBASE-9796
                 URL: https://issues.apache.org/jira/browse/HBASE-9796
             Project: HBase
          Issue Type: Bug
    Affects Versions: 0.96.0
            Reporter: stack


Saw this running hbase-it suite on test cluster.  Its tricky.  Needs a little study.  Connection or location became null in this code when we go to clear the caches:

{code}
    if (t instanceof SocketTimeoutException ||
        t instanceof ConnectException ||
        t instanceof RetriesExhaustedException ||
        (location != null && getConnection().isDeadServer(location.getServerName()))) {
      // if thrown these exceptions, we clear all the cache entries that
      // map to that slow/dead server; otherwise, let cache miss and ask
      // hbase:meta again to find the new location
      getConnection().clearCaches(location.getServerName());
{code}

Here is exception seen:

2013-10-17 09:05:44,569 INFO  [Thread-9] actions.Action: Killed region server:a1811.halxg.cloudera.com,60020,1382025707403. Reported num of rs:4
2013-10-17 09:05:44,569 INFO  [Thread-9] actions.Action: Sleeping for:2961
Exception in thread "HBaseUpdaterThread_3" java.lang.NullPointerException
	at org.apache.hadoop.hbase.client.RegionServerCallable.throwable(RegionServerCallable.java:120)
	at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:124)
	at org.apache.hadoop.hbase.client.HTable.get(HTable.java:755)
	at org.apache.hadoop.hbase.util.MultiThreadedUpdater$HBaseUpdaterThread.run(MultiThreadedUpdater.java:159)





--
This message was sent by Atlassian JIRA
(v6.1#6144)