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From ramkrishna vasudevan <ramkrishna.s.vasude...@gmail.com>
Subject Re: Table in Inconsistent State; Perpetually pending region server transitions while loading lot of data into Hbase via MR
Date Thu, 01 Nov 2012 10:20:25 GMT
Can you try restarting the cluster i mean the master and RS.
Also if this things persists try to clear the zk data and restart.

Regards
Ram

On Thu, Nov 1, 2012 at 2:46 PM, Cheng Su <scarcer.cn@gmail.com> wrote:

> Sorry, my mistake. Ignore about the "max store size of a single CF" please.
>
> m(_ _)m
>
> On Thu, Nov 1, 2012 at 4:43 PM, Ameya Kantikar <ameya@groupon.com> wrote:
> > Thanks Cheng. I'll try increasing my max region size limit.
> >
> > However I am not clear with this math:
> >
> > "Since you set the max file size to 2G, you can only store 2XN G data
> > into a single CF."
> >
> > Why is that? My assumption is, even though single region can only be 2
> GB,
> > I can still have hundreds of regions, and hence can store 200GB+ data in
> > single CF on my 10 machine cluster.
> >
> > Ameya
> >
> >
> > On Thu, Nov 1, 2012 at 1:19 AM, Cheng Su <scarcer.cn@gmail.com> wrote:
> >
> >> I met same problem these days.
> >> I'm not very sure the error log is exactly same, but I do have the
> >> same exception
> >>
> >> org.apache.hadoop.hbase.client.RetriesExhaustedWithDetailsException:
> >> Failed 1 action: NotServingRegionException: 1 time, servers with
> >> issues: smartdeals-hbase8-snc1.snc1:60020,
> >>
> >> and the table is also neither enabled nor disabled, thus I can't drop
> it.
> >>
> >> I guess the problem is the total store size.
> >> How many region server do you have?
> >> Since you set the max file size to 2G, you can only store 2XN G data
> >> into a single CF.
> >> (N is the number of your region servers)
> >>
> >> You might want to increase the max file size or region servers.
> >>
> >> On Thu, Nov 1, 2012 at 3:29 PM, Ameya Kantikar <ameya@groupon.com>
> wrote:
> >> > One more thing, the Hbase table in question is neither enabled, nor
> >> > disabled:
> >> >
> >> > hbase(main):006:0> is_disabled 'userTable1'
> >> > false
> >> >
> >> > 0 row(s) in 0.0040 seconds
> >> >
> >> > hbase(main):007:0> is_enabled 'userTable1'
> >> > false
> >> >
> >> > 0 row(s) in 0.0040 seconds
> >> >
> >> > Ameya
> >> >
> >> > On Thu, Nov 1, 2012 at 12:02 AM, Ameya Kantikar <ameya@groupon.com>
> >> wrote:
> >> >
> >> >> Hi,
> >> >>
> >> >> I am trying to load lot of data (around 1.5 TB) into a single Hbase
> >> table.
> >> >> I have setup region size at 2 GB. I also
> >> >> set hbase.regionserver.handler.count at 30.
> >> >>
> >> >> When I start loading data via MR, after a while, tasks start failing
> >> with
> >> >> following error:
> >> >>
> >> >> org.apache.hadoop.hbase.client.RetriesExhaustedWithDetailsException:
> >> Failed 1 action: NotServingRegionException: 1 time, servers with issues:
> >> smartdeals-hbase8-snc1.snc1:60020,
> >> >>       at
> >>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.processBatchCallback(HConnectionManager.java:1641)
> >> >>       at
> >>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.processBatch(HConnectionManager.java:1409)
> >> >>       at
> >> org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:943)
> >> >>       at org.apache.hadoop.hbase.client.HTable.doPut(HTable.java:820)
> >> >>       at org.apache.hadoop.hbase.client.HTable.put(HTable.java:795)
> >> >>       at
> >>
> com..mr.hbase.LoadUserCacheInHbase$TokenizerMapper.map(LoadUserCacheInHbase.java:83)
> >> >>       at
> >>
> com..mr.hbase.LoadUserCacheInHbase$TokenizerMapper.map(LoadUserCacheInHbase.java:33)
> >> >>       at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:140)
> >> >>       at
> org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:645)
> >> >>       at org.apache.hadoop.mapred.MapTask.run(MapTask.j
> >> >>
> >> >> On the hbase8 machine I see following in logs:
> >> >>
> >> >> ERROR org.apache.hadoop.hbase.regionserver.wal.HLog: Error while
> >> syncing, requesting close of hlog
> >> >> java.io.IOException: Reflection
> >> >>         at
> >>
> org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter.sync(SequenceFileLogWriter.java:230)
> >> >>         at
> >> org.apache.hadoop.hbase.regionserver.wal.HLog.syncer(HLog.java:1109)
> >> >>         at
> >> org.apache.hadoop.hbase.regionserver.wal.HLog.sync(HLog.java:1213)
> >> >>         at
> >>
> org.apache.hadoop.hbase.regionserver.wal.HLog$LogSyncer.run(HLog.java:1071)
> >> >>         at java.lang.Thread.run(Thread.java:662)
> >> >> Caused by: java.lang.reflect.InvocationTargetException
> >> >>         at sun.reflect.GeneratedMethodAccessor11.invoke(Unknown
> Source)
> >> >>         at
> >>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >> >>         at java.lang.reflect.Method.invoke(Method.java:597)
> >> >>         at
> >>
> org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter.sync(SequenceFileLogWriter.java:228)
> >> >>         ... 4 more
> >> >>
> >> >>
> >> >> I only have 15 map tasks each on a 10 machine cluster (total 150 map
> >> tasks entering data into Hbase table).
> >> >>
> >> >> Further, I see 2-3 regions perpetually under "Regions in Transitions"
> >> in Hbase master web console as follows:
> >> >>
> >> >> 8dcb3edee4e43faa3dbeac2db4f12274userTable1,pookydearest@hotmail.com
> ,1351728961461.8dcb3edee4e43faa3dbeac2db4f12274.
> >> state=PENDING_OPEN, ts=Thu Nov 01 06:39:57 UTC 2012 (409s ago),
> >> server=smartdeals-hbase1-snc1.snc1,60020,1351751785514
> >> >>
> >> >>
> >> >> bb91fd0c855e60dd4159e0ad3fd52cdauserTable1,m_skaare@yahoo.com
> ,1351728968936.bb91fd0c855e60dd4159e0ad3fd52cda.
> >> state=PENDING_OPEN, ts=Thu Nov 01 06:42:17 UTC 2012 (269s ago),
> >> server=smartdeals-hbase3-snc1.snc1,60020,1351747466016
> >> >> bd44334a11464baf85013c97d673e600userTable1,tammikilgore@gmail.com
> ,1351728952308.bd44334a11464baf85013c97d673e600.
> >> state=PENDING_OPEN, ts=Thu Nov 01 06:42:17 UTC 2012 (269s ago),
> >> server=smartdeals-hbase1-snc1.snc1,60020,1351751785514
> >> >> ed1f7e7908fc232f10d78dd1e796a5d7userTable1,jwoodel@triad.rr.com
> ,1351728971232.ed1f7e7908fc232f10d78dd1e796a5d7.
> >> state=PENDING_OPEN, ts=Thu Nov 01 06:37:37 UTC 2012 (549s ago),
> >> server=smartdeals-hbase3-snc1.snc1,60020,1351747466016
> >> >>
> >> >>
> >> >> Note these are not going away even after 30 minutes.
> >> >>
> >> >> Further after running
> >> >>
> >> >> hbase hbck -summary I get following:
> >> >>
> >> >> Summary:
> >> >>   -ROOT- is okay.
> >> >>     Number of regions: 1
> >> >>     Deployed on:  smartdeals-hbase7-snc1.snc1,60020,1351747458782
> >> >>   .META. is okay.
> >> >>     Number of regions: 1
> >> >>     Deployed on:  smartdeals-hbase7-snc1.snc1,60020,1351747458782
> >> >>   test1 is okay.
> >> >>     Number of regions: 1
> >> >>     Deployed on:  smartdeals-hbase2-snc1.snc1,60020,1351747457308
> >> >>   userTable1 is okay.
> >> >>     Number of regions: 32
> >> >>     Deployed on:  smartdeals-hbase10-snc1.snc1,60020,1351747456776
> >> smartdeals-hbase2-snc1.snc1,60020,1351747457308
> >> smartdeals-hbase4-snc1.snc1,60020,1351747455571
> >> smartdeals-hbase5-snc1.snc1,60020,1351747458579
> >> smartdeals-hbase6-snc1.snc1,60020,1351747458186
> >> smartdeals-hbase7-snc1.snc1,60020,1351747458782
> >> smartdeals-hbase8-snc1.snc1,60020,1351747459112
> >> smartdeals-hbase9-snc1.snc1,60020,1351747455106
> >> >> 24 inconsistencies detected.
> >> >> Status: INCONSISTENT
> >> >>
> >> >> In master logs I am seeing following error:
> >> >>
> >> >> ERROR org.apache.hadoop.hbase.master.AssignmentManager: Failed
> >> assignment in: smartdeals-hbase3-snc1.snc1,60020,1351747466016 due to
> >> >>
> >> org.apache.hadoop.hbase.regionserver.RegionAlreadyInTransitionException:
> >> Received:OPEN for the region:userTable1,m_skaare@yahoo.com
> ,1351728968936.bb91fd0c855e60dd4159e0ad3fd52cda.
> >> ,which we are already trying to OPEN.
> >> >>  at
> >>
> org.apache.hadoop.hbase.regionserver.HRegionServer.checkIfRegionInTransition(HRegionServer.java:2499)
> >>        at
> >>
> org.apache.hadoop.hbase.regionserver.HRegionServer.openRegion(HRegionServer.java:2457)
> >>        at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
> >>    at
> >>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >>        at java.lang.reflect.Method.invoke(Method.java:597)        at
> >>
> org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:364)
> >>        at
> >>
> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1336)
> >> >>
> >> >>
> >> >> Am I missing something? How do I recover from this? How do I load lot
> >> of data via MR into Hbase Tables?
> >> >>
> >> >>
> >> >> I am running under following setup:
> >> >>
> >> >> hadoop:2.0.0-cdh4.0.1
> >> >>
> >> >> hbase: 0.92.1-cdh4.0.1, r
> >> >>
> >> >>
> >> >> Would greatly appreciate any help.
> >> >>
> >> >>
> >> >> Ameya
> >> >>
> >> >>
> >> >>
> >> >>
> >>
> >>
> >>
> >> --
> >>
> >> Regards,
> >> Cheng Su
> >>
>
>
>
> --
>
> Regards,
> Cheng Su
>

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