Hi Jean,

Thanks ! Could you point me to some of the fixes ? We currently use
hbase-0.94.0 with some other patches.

On Fri, Nov 30, 2012 at 8:53 AM, Jean-Daniel Cryans <[email protected]>wrote:

> Use 0.94.2, it has all the fixes you need.
>
> J-D
>
> On Fri, Nov 30, 2012 at 4:56 AM, Varun Sharma <[email protected]> wrote:
>
> > After clearing out some files in /.logs which had size 0 and restarting
> the
> > cluster - all regions came online and starting serving. But now I am
> again
> > stuck. The master moved some regions to rebalance after the restart and
> > some of them are PENDING_CLOSE while 2 regions are offline. Again all PRI
> > handlers are stuck in replicateLogEntries() - looking at the region
> server
> > status page. Moreover jstack shows that these are stuck on
> > locateRegionInMeta. The other handlers are waiting as normal. Also there
> > are 0 byte files now under ./logs  -not sure if these are causing the
> > issues...
> >
> > Thanks !
> >
> > On Fri, Nov 30, 2012 at 3:46 AM, Varun Sharma <[email protected]>
> wrote:
> >
> > > Hi,
> > >
> > > I have a master master replication setup with hbase 0.94.0 - if only
> > write
> > > to cluster A and replication carries over the data to cluster B. I am
> > > having some really weird issues with cluster B. Basically, all the
> > Priority
> > > RPC handlers are stuck in calls in replicateLogEntries while all the
> > normal
> > > RPC handlers are just waiting on each region server.
> > >
> > > From the logs I could see the following:
> > >
> > > 1) Region server shutdown
> > > Stopping the region server showed some issues. There were exceptions
> > > thrown while closing down regions - the exceptions were in the
> > > localRegionInMeta calls and also while trying to get the value of
> > > /hbase/root-region-server (I have checked via a manual client,
> zookeeper
> > is
> > > working fine).
> > >
> > > 2) jstack traces show that there are issues with locating the META and
> > the
> > > ROOT tables
> > >
> > > "PRI IPC Server handler 2 on 60020" daemon prio=10
> tid=0x00007f4ddcd39000
> > > nid=0x2dbf waiting on condition [0x00007f4dd9edc000]
> > >    java.lang.Thread.State: TIMED_WAITING (sleeping)
> > > at java.lang.Thread.sleep(Native Method)
> > > at
> > >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:1046)
> > >  at
> > >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:836)
> > > at
> > >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:801)
> > >  at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:234)
> > > at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:174)
> > >  at
> > >
> >
> org.apache.hadoop.hbase.client.HTableFactory.createHTableInterface(HTableFactory.java:36)
> > > at
> > >
> >
> org.apache.hadoop.hbase.client.HTablePool.createHTable(HTablePool.java:268)
> > >  at
> > >
> >
> org.apache.hadoop.hbase.client.HTablePool.findOrCreateTable(HTablePool.java:198)
> > > at
> > org.apache.hadoop.hbase.client.HTablePool.getTable(HTablePool.java:173)
> > >  at
> > > org.apache.hadoop.hbase.client.HTablePool.getTable(HTablePool.java:216)
> > > at
> > >
> >
> org.apache.hadoop.hbase.replication.regionserver.ReplicationSink.batch(ReplicationSink.java:171)
> > >
> > > "IPC Server handler 3 on 60020" daemon prio=10 tid=0x00007f4ddcb1d800
> > > nid=0x2db6 waiting on condition [0x00007f4dda7e6000]
> > >    java.lang.Thread.State: WAITING (parking)
> > >  at sun.misc.Unsafe.park(Native Method)
> > > - parking to wait for  <0x000000056aa146e8> (a
> > > java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> > >  at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> > > at
> > >
> >
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
> > >  at
> > >
> >
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:386)
> > > at
> > >
> >
> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1348)
> > >
> > > 3) The region server containing the 'ROOT' also shows the following
> trace
> > > with jstack
> > >
> > > "RS_OPEN_REGION-ip-10-60-53-226.ec2.internal,60020,1354263663659-2"
> > > prio=10 tid=0x0000000001f07800 nid=0x575c waiting on condition
> > > [0x00007fc3333f2000]
> > >    java.lang.Thread.State: WAITING (parking)
> > >         at sun.misc.Unsafe.park(Native Method)
> > >         - parking to wait for  <0x000000056c2ceb70> (a
> > > java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> > >         at
> > > java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> > >         at
> > >
> >
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
> > >         at
> > >
> >
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:386)
> > >         at
> > >
> >
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043)
> > >         at
> > >
> >
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1103)
> > >         at
> > >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> > >         at java.lang.Thread.run(Thread.java:679)
> > >
> > > "RS_OPEN_REGION-ip-10-60-53-226.ec2.internal,60020,1354263663659-1"
> > > prio=10 tid=0x0000000002e9f000 nid=0x572d waiting on condition
> > > [0x00007fc3337f6000]
> > >    java.lang.Thread.State: WAITING (parking)
> > >         at sun.misc.Unsafe.park(Native Method)
> > >         - parking to wait for  <0x000000056c2ceb70> (a
> > > java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> > >         at
> > > java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> > >         at
> > >
> >
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
> > >         at
> > >
> >
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:386)
> > >         at
> > >
> >
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043)
> > >         at
> > >
> >
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1103)
> > >         at
> > >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> > >         at java.lang.Thread.run(Thread.java:679)
> > >
> > > 4) There are some replication related exceptions but not sure if those
> > are
> > > critical.
> > >
> > > 2012-11-30 00:18:04,575 WARN
> > > org.apache.hadoop.hbase.replication.regionserver.ReplicationSource: 1
> > Got:
> > > java.io.EOFException
> > >
> > > Also,
> > > 012-11-30 00:06:33,830 ERROR
> > > org.apache.hadoop.hbase.replication.regionserver.ReplicationSink:
> Unable
> > to
> > > accept edit because:
> > > java.net.SocketTimeoutException: Call to ip-10-10-54-176.ec2.internal/
> > > 10.10.54.176:60020 failed on socket timeout exception:
> > > java.net.SocketTimeoutException: 1500 millis timeout while waiting for
> > > channel to be ready for read. ch :
> > > java.nio.channels.SocketChannel[connected local=/10.60.53.226:34164
> > remote=ip-10-10-54-176.ec2.internal/
> > > 10.10.54.176:60020]
> > >         at
> > >
> >
> org.apache.hadoop.hbase.ipc.HBaseClient.wrapException(HBaseClient.java:949)
> > >         at
> > > org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:922)
> > >         at
> > >
> >
> org.apache.hadoop.hbase.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:150)
> > >         at $Proxy12.getClosestRowBefore(Unknown Source)
> > >         at
> > >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:965)
> > >         at
> > >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:832)
> > >         at
> > >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.relocateRegion(HConnectionManager.java:807)
> > >         at
> > >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:1042)
> > >         at
> > >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:836)
> > >         at
> > >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.processBatchCallback(HConnectionManager.java:1482)
> > >         at
> > >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.processBatch(HConnectionManager.java:1367)
> > >
> > > At this point, when I restart region servers, they end up with 0
> regions
> > > and I am not able to bring back the regions they were serving. Any help
> > > would be deeply appreciated.
> > >
> > > Thanks
> > > Varun
> > >
> >
>

Reply via email to