Can you do ls /hbase/rs and see what you get for 02-d - instead of looking in /replication/, could you look in /hbase/replication/rs - I want to see if the timestamps are matching or not ?
Varun On Wed, May 22, 2013 at 2:17 PM, Varun Sharma <va...@pinterest.com> wrote: > I see - so looks okay - there's just a lot of deep nesting in there - if > you look into these you nodes by doing ls - you should see a bunch of > WAL(s) which still need to be replicated... > > Varun > > > On Wed, May 22, 2013 at 2:16 PM, Varun Sharma <va...@pinterest.com> wrote: > >> 2013-05-22 15:31:25,929 WARN >> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: Possibly transient >> ZooKeeper exception: >> org.apache.zookeeper.KeeperException$SessionExpiredException: >> KeeperErrorCode = Session expired for * >> /hbase/replication/rs/va-p-hbase-01-c,60020,1369249873379/1-va-p-hbase-01-c,60020,1369042378287-va-p-hbase-02-c,60020,1369042377731-va-p-hbase-02-d,60020,1369233252475/va-p-hbase-01-c%2C60020%2C1369042378287.1369220050719 >> * >> * >> * >> *01->[01->02->02]->01* >> >> *Looks like a bunch of cascading failures causing this deep nesting... * >> >> >> On Wed, May 22, 2013 at 2:09 PM, Amit Mor <amit.mor.m...@gmail.com>wrote: >> >>> empty return: >>> >>> [zk: va-p-zookeeper-01-c:2181(CONNECTED) 10] ls >>> /hbase/replication/rs/va-p-hbase-01-c,60020,1369249873379/1 >>> [] >>> >>> >>> >>> On Thu, May 23, 2013 at 12:05 AM, Varun Sharma <va...@pinterest.com> >>> wrote: >>> >>> > Do an "ls" not a get here and give the output ? >>> > >>> > ls /hbase/replication/rs/va-p-hbase-01-c,60020,1369249873379/1 >>> > >>> > >>> > On Wed, May 22, 2013 at 1:53 PM, amit.mor.m...@gmail.com < >>> > amit.mor.m...@gmail.com> wrote: >>> > >>> > > [zk: va-p-zookeeper-01-c:2181(CONNECTED) 3] get >>> > > /hbase/replication/rs/va-p-hbase-01-c,60020,1369249873379/1 >>> > > >>> > > cZxid = 0x60281c1de >>> > > ctime = Wed May 22 15:11:17 EDT 2013 >>> > > mZxid = 0x60281c1de >>> > > mtime = Wed May 22 15:11:17 EDT 2013 >>> > > pZxid = 0x60281c1de >>> > > cversion = 0 >>> > > dataVersion = 0 >>> > > aclVersion = 0 >>> > > ephemeralOwner = 0x0 >>> > > dataLength = 0 >>> > > numChildren = 0 >>> > > >>> > > >>> > > >>> > > On Wed, May 22, 2013 at 11:49 PM, Ted Yu <yuzhih...@gmail.com> >>> wrote: >>> > > >>> > > > What does this command show you ? >>> > > > >>> > > > get /hbase/replication/rs/va-p-hbase-01-c,60020,1369249873379/1 >>> > > > >>> > > > Cheers >>> > > > >>> > > > On Wed, May 22, 2013 at 1:46 PM, amit.mor.m...@gmail.com < >>> > > > amit.mor.m...@gmail.com> wrote: >>> > > > >>> > > > > ls /hbase/replication/rs/va-p-hbase-01-c,60020,1369249873379 >>> > > > > [1] >>> > > > > [zk: va-p-zookeeper-01-c:2181(CONNECTED) 2] ls >>> > > > > /hbase/replication/rs/va-p-hbase-01-c,60020,1369249873379/1 >>> > > > > [] >>> > > > > >>> > > > > I'm on hbase-0.94.2-cdh4.2.1 >>> > > > > >>> > > > > Thanks >>> > > > > >>> > > > > >>> > > > > On Wed, May 22, 2013 at 11:40 PM, Varun Sharma < >>> va...@pinterest.com> >>> > > > > wrote: >>> > > > > >>> > > > > > Also what version of HBase are you running ? >>> > > > > > >>> > > > > > >>> > > > > > On Wed, May 22, 2013 at 1:38 PM, Varun Sharma < >>> va...@pinterest.com >>> > > >>> > > > > wrote: >>> > > > > > >>> > > > > > > Basically, >>> > > > > > > >>> > > > > > > You had va-p-hbase-02 crash - that caused all the replication >>> > > related >>> > > > > > data >>> > > > > > > in zookeeper to be moved to va-p-hbase-01 and have it take >>> over >>> > for >>> > > > > > > replicating 02's logs. Now each region server also maintains >>> an >>> > > > > in-memory >>> > > > > > > state of whats in ZK, it seems like when you start up 01, its >>> > > trying >>> > > > to >>> > > > > > > replicate the 02 logs underneath but its failing to because >>> that >>> > > data >>> > > > > is >>> > > > > > > not in ZK. This is somewhat weird... >>> > > > > > > >>> > > > > > > Can you open the zookeepeer shell and do >>> > > > > > > >>> > > > > > > ls /hbase/replication/rs/va-p-hbase-01-c,60020,1369249873379 >>> > > > > > > >>> > > > > > > And give the output ? >>> > > > > > > >>> > > > > > > >>> > > > > > > On Wed, May 22, 2013 at 1:27 PM, amit.mor.m...@gmail.com < >>> > > > > > > amit.mor.m...@gmail.com> wrote: >>> > > > > > > >>> > > > > > >> Hi, >>> > > > > > >> >>> > > > > > >> This is bad ... and happened twice: I had my >>> replication-slave >>> > > > cluster >>> > > > > > >> offlined. I performed quite a massive Merge operation on it >>> and >>> > > > after >>> > > > > a >>> > > > > > >> couple of hours it had finished and I returned it back >>> online. >>> > At >>> > > > the >>> > > > > > same >>> > > > > > >> time, the replication-master RS machines crashed (see first >>> > crash >>> > > > > > >> http://pastebin.com/1msNZ2tH) with the first exception >>> being: >>> > > > > > >> >>> > > > > > >> org.apache.zookeeper.KeeperException$NoNodeException: >>> > > > KeeperErrorCode >>> > > > > = >>> > > > > > >> NoNode for >>> > > > > > >> >>> > > > > > >> >>> > > > > > >>> > > > > >>> > > > >>> > > >>> > >>> /hbase/replication/rs/va-p-hbase-01-c,60020,1369233253404/1-va-p-hbase-01-c,60020,1369042378287-va-p-hbase-02-c,60020,1369042377731/va-p-hbase-01-c%2C60020%2C1369042378287.1369220050719 >>> > > > > > >> at >>> > > > > > >> >>> > > > >>> org.apache.zookeeper.KeeperException.create(KeeperException.java:111) >>> > > > > > >> at >>> > > > > > >> >>> > > org.apache.zookeeper.KeeperException.create(KeeperException.java:51) >>> > > > > > >> at >>> > > > org.apache.zookeeper.ZooKeeper.setData(ZooKeeper.java:1266) >>> > > > > > >> at >>> > > > > > >> >>> > > > > > >> >>> > > > > > >>> > > > > >>> > > > >>> > > >>> > >>> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.setData(RecoverableZooKeeper.java:354) >>> > > > > > >> at >>> > > > > > >> >>> > org.apache.hadoop.hbase.zookeeper.ZKUtil.setData(ZKUtil.java:846) >>> > > > > > >> at >>> > > > > > >> >>> > org.apache.hadoop.hbase.zookeeper.ZKUtil.setData(ZKUtil.java:898) >>> > > > > > >> at >>> > > > > > >> >>> > org.apache.hadoop.hbase.zookeeper.ZKUtil.setData(ZKUtil.java:892) >>> > > > > > >> at >>> > > > > > >> >>> > > > > > >> >>> > > > > > >>> > > > > >>> > > > >>> > > >>> > >>> org.apache.hadoop.hbase.replication.ReplicationZookeeper.writeReplicationStatus(ReplicationZookeeper.java:558) >>> > > > > > >> at >>> > > > > > >> >>> > > > > > >> >>> > > > > > >>> > > > > >>> > > > >>> > > >>> > >>> org.apache.hadoop.hbase.replication.regionserver.ReplicationSourceManager.logPositionAndCleanOldLogs(ReplicationSourceManager.java:154) >>> > > > > > >> at >>> > > > > > >> >>> > > > > > >> >>> > > > > > >>> > > > > >>> > > > >>> > > >>> > >>> org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.shipEdits(ReplicationSource.java:638) >>> > > > > > >> at >>> > > > > > >> >>> > > > > > >> >>> > > > > > >>> > > > > >>> > > > >>> > > >>> > >>> org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.run(ReplicationSource.java:387) >>> > > > > > >> >>> > > > > > >> Before restarting the crashed RS's, I have applied a >>> > > > > 'stop_replication' >>> > > > > > >> cmd. Then fired up the RS's again. They've started o.k. but >>> once >>> > > > I've >>> > > > > > hit >>> > > > > > >> 'start_replication' they have crashed once again. The second >>> > crash >>> > > > log >>> > > > > > >> http://pastebin.com/8Nb5epJJ has the same initial exception >>> > > > > > >> (org.apache.zookeeper.KeeperException$NoNodeException: >>> > > > > > >> KeeperErrorCode = NoNode). I've started the crash region >>> servers >>> > > > again >>> > > > > > >> without replication and currently all is well, but I need to >>> > start >>> > > > > > >> replication asap. >>> > > > > > >> >>> > > > > > >> Does anyone have an idea what's going on and how can I >>> solve it >>> > ? >>> > > > > > >> >>> > > > > > >> Thanks, >>> > > > > > >> Amit >>> > > > > > >> >>> > > > > > > >>> > > > > > > >>> > > > > > >>> > > > > >>> > > > >>> > > >>> > >>> >> >> >
