va-p-hbase-02-d,60020,1369249862401
On Thu, May 23, 2013 at 12:20 AM, Varun Sharma <va...@pinterest.com> wrote: > Basically > > ls /hbase/rs and what do you see for va-p-02-d ? > > > On Wed, May 22, 2013 at 2:19 PM, Varun Sharma <va...@pinterest.com> wrote: > > > 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 > >>>> > > > > > >> > >>>> > > > > > > > >>>> > > > > > > > >>>> > > > > > > >>>> > > > > > >>>> > > > > >>>> > > > >>>> > > >>>> > >>> > >>> > >> > > >
