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HBase, mail # user - HMaster and HRegionServer going down


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Re: HMaster and HRegionServer going down
Azuryy Yu 2013-06-05, 11:53
there have errors in your dats node log, and the error time match with rs
log error time.

--Send from my Sony mobile.
On Jun 5, 2013 5:06 PM, "Vimal Jain" <[EMAIL PROTECTED]> wrote:

> I don't think so , as i dont find any issues in data node logs.
> Also there are lot of exceptions like "session expired" , "slept more than
> configured time" . what are these ?
>
>
> On Wed, Jun 5, 2013 at 2:27 PM, Azuryy Yu <[EMAIL PROTECTED]> wrote:
>
> > Because your data node 192.168.20.30 broke down. which leads to RS down.
> >
> >
> > On Wed, Jun 5, 2013 at 3:19 PM, Vimal Jain <[EMAIL PROTECTED]> wrote:
> >
> > > Here is the complete log:
> > >
> > > http://bin.cakephp.org/saved/103001 - Hregion
> > > http://bin.cakephp.org/saved/103000 - Hmaster
> > > http://bin.cakephp.org/saved/103002 - Datanode
> > >
> > >
> > > On Wed, Jun 5, 2013 at 11:58 AM, Vimal Jain <[EMAIL PROTECTED]> wrote:
> > >
> > > > Hi,
> > > > I have set up Hbase in pseudo-distributed mode.
> > > > It was working fine for 6 days , but suddenly today morning both
> > HMaster
> > > > and Hregion process went down.
> > > > I checked in logs of both hadoop and hbase.
> > > > Please help here.
> > > > Here are the snippets :-
> > > >
> > > > *Datanode logs:*
> > > > 2013-06-05 05:12:51,436 INFO
> > > > org.apache.hadoop.hdfs.server.datanode.DataNode: Exception in
> > > receiveBlock
> > > > for block blk_1597245478875608321_2818 java.io.EOFException: while
> > trying
> > > > to read 2347 bytes
> > > > 2013-06-05 05:12:51,442 INFO
> > > > org.apache.hadoop.hdfs.server.datanode.DataNode: writeBlock
> > > > blk_1597245478875608321_2818 received exception java.io.EOFException:
> > > while
> > > > trying to read 2347 bytes
> > > > 2013-06-05 05:12:51,442 ERROR
> > > > org.apache.hadoop.hdfs.server.datanode.DataNode:
> DatanodeRegistration(
> > > > 192.168.20.30:50010,
> > > > storageID=DS-1816106352-192.168.20.30-50010-1369314076237,
> > > infoPort=50075,
> > > > ipcPort=50020):DataXceiver
> > > > java.io.EOFException: while trying to read 2347 bytes
> > > >
> > > >
> > > > *HRegion logs:*
> > > > 2013-06-05 05:12:50,701 WARN org.apache.hadoop.hbase.util.Sleeper: We
> > > > slept 4694929ms instead of 3000ms, this is likely due to a long
> garbage
> > > > collecting pause and it's usually bad, see
> > > > http://hbase.apache.org/book.html#trouble.rs.runtime.zkexpired
> > > > 2013-06-05 05:12:51,045 WARN org.apache.hadoop.hdfs.DFSClient:
> > > > DFSOutputStream ResponseProcessor exception  for block
> > > > blk_1597245478875608321_2818java.net.SocketTimeoutException: 63000
> > millis
> > > > timeout while waiting for channel to be ready for read. ch :
> > > > java.nio.channels.SocketChannel[connected local=/192.168.20.30:44333
> > > remote=/
> > > > 192.168.20.30:50010]
> > > > 2013-06-05 05:12:51,046 WARN org.apache.hadoop.hbase.util.Sleeper: We
> > > > slept 11695345ms instead of 10000000ms, this is likely due to a long
> > > > garbage collecting pause and it's usually bad, see
> > > > http://hbase.apache.org/book.html#trouble.rs.runtime.zkexpired
> > > > 2013-06-05 05:12:51,048 WARN org.apache.hadoop.hdfs.DFSClient: Error
> > > > Recovery for block blk_1597245478875608321_2818 bad datanode[0]
> > > > 192.168.20.30:50010
> > > > 2013-06-05 05:12:51,075 WARN org.apache.hadoop.hdfs.DFSClient: Error
> > > while
> > > > syncing
> > > > java.io.IOException: All datanodes 192.168.20.30:50010 are bad.
> > > > Aborting...
> > > >     at
> > > >
> > >
> >
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.processDatanodeError(DFSClient.java:3096)
> > > > 2013-06-05 05:12:51,110 FATAL
> > > > org.apache.hadoop.hbase.regionserver.wal.HLog: Could not sync.
> > Requesting
> > > > close of hlog
> > > > java.io.IOException: Reflection
> > > > Caused by: java.lang.reflect.InvocationTargetException
> > > > Caused by: java.io.IOException: DFSOutputStream is closed
> > > > 2013-06-05 05:12:51,180 FATAL
> > > > org.apache.hadoop.hbase.regionserver.wal.HLog: Could not sync.
> > Requesting
> > > > close of hlog