Here's one from last night with the master logs at the bottom. http://pastebin.com/cSdMbA2a
I don't see that region in the master logs for 4 days back. I'm going to import some new data from scratch soon and will be sure to keep all the master logs. On Mon, Nov 5, 2012 at 9:52 AM, Jean-Daniel Cryans <[email protected]>wrote: > This reminds me a lot of https://issues.apache.org/jira/browse/HBASE-4792 > > What I'd like to see is the log from the first time the master > receives the split message. I guess it says the region doesn't exist > anymore because the split was processed already in the master but > there's a failure mode similar to 4792. > > I saw this on another cluster last week but the logs were rolling > based on size so the original split message was lost. > > J-D > > On Sun, Nov 4, 2012 at 5:16 PM, Matt Corgan <[email protected]> wrote: > > I've had a few successful splits today without any errors. I'll turn up > > the importer speed tomorrow to start stressing the cluster more. > > > > > > On Sun, Nov 4, 2012 at 2:07 PM, Ted Yu <[email protected]> wrote: > > > >> Matt: > >> Was there any region server crash before you noticed the repeated log > for > >> bc62a8a72124a4ba3f6b9f302587903c ? > >> > >> I wonder if the following JIRA might be related: > >> HBASE-7083 SSH#fixupDaughter should force re-assign missing daughter > >> > >> Thanks > >> > >> On Sat, Nov 3, 2012 at 7:27 PM, Matt Corgan <[email protected]> > wrote: > >> > >> > Strangely, I don't see any record of that region in the master before > >> what > >> > I already pasted even though I have logs back to 10/30. Next time it > >> > happens I'll gather a full log record and try to debug while it's > >> > occurring. > >> > > >> > > >> > On Sat, Nov 3, 2012 at 7:10 PM, rajesh babu chintaguntla < > >> > [email protected]> wrote: > >> > > >> > > Hi Matt, > >> > > can you paste some more master logs of region > >> > > bc62a8a72124a4ba3f6b9f30258790 before split. > >> > > I think Its not problem with splitting. > >> > > We are getting > >> > > LOG.warn("Region " + encodedName + " not found on server " + > >> > > serverName + > >> > > "; failed processing"); > >> > > this log means no entry in servers map(not fully assigned). > >> > > Set<HRegionInfo> hris = this.servers.get(sn); > >> > > HRegionInfo foundHri = null; > >> > > for (HRegionInfo hri: hris) { > >> > > if (hri.getEncodedName().equals(encodedName)) { > >> > > foundHri = hri; > >> > > break; > >> > > } > >> > > } > >> > > return foundHri; > >> > > > >> > > > >> > > > >> > > > >> > > On Sun, Nov 4, 2012 at 6:07 AM, lars hofhansl <[email protected]> > >> > wrote: > >> > > > >> > > > CC'ing dev list... > >> > > > > >> > > > Is anybody aware of any changes that went in recently that could > >> cause > >> > > > this? > >> > > > I looked around a bit, but could not find anything obvious. > >> > > > > >> > > > -- Lars > >> > > > > >> > > > > >> > > > > >> > > > ________________________________ > >> > > > From: Matt Corgan <[email protected]> > >> > > > To: user <[email protected]> > >> > > > Sent: Saturday, November 3, 2012 5:27 PM > >> > > > Subject: Re: infinite loop of RS_ZK_REGION_SPLIT on .94.2 > >> > > > > >> > > > I think the cluster is ok without running hbck, as restarting the > >> > > > regionserver process stops the warnings and everything looks ok > >> > > otherwise. > >> > > > > >> > > > here's the regionserver right after the split happens: > >> > > > ------------------------ > >> > > > 2012-11-01 22:45:28,726 DEBUG > >> > org.apache.hadoop.hbase.zookeeper.ZKAssign: > >> > > > regionserver:60020-0x13ab46479832953 Attempting to transition node > >> > > > bc62a8a72124a4ba3f6b9f302587903c from *RS_ZK_R* > >> > > > *EGION_SPLITTING to RS_ZK_REGION_SPLIT* > >> > > > 2012-11-01 22:45:28,730 DEBUG > >> > org.apache.hadoop.hbase.zookeeper.ZKAssign: > >> > > > regionserver:60020-0x13ab46479832953 Successfully transitioned > node > >> > > > bc62a8a72124a4ba3f6b9f302587903c from RS_ZK_ > >> > > > REGION_SPLITTING to RS_ZK_REGION_SPLIT > >> > > > 2012-11-01 22:45:28,730 DEBUG > >> > > > org.apache.hadoop.hbase.regionserver.SplitTransaction: Still > waiting > >> on > >> > > the > >> > > > master to process the split for bc62a8a72124a4ba3f6b9f302587903c > >> > > > 2012-11-01 22:45:28,832 DEBUG > >> > org.apache.hadoop.hbase.zookeeper.ZKAssign: > >> > > > regionserver:60020-0x13ab46479832953 Attempting to transition node > >> > > > bc62a8a72124a4ba3f6b9f302587903c from RS_ZK_R > >> > > > EGION_SPLIT to RS_ZK_REGION_SPLIT > >> > > > 2012-11-01 22:45:28,837 DEBUG > >> > org.apache.hadoop.hbase.zookeeper.ZKAssign: > >> > > > regionserver:60020-0x13ab46479832953 Successfully transitioned > node > >> > > > bc62a8a72124a4ba3f6b9f302587903c from RS_ZK_ > >> > > > REGION_SPLIT to RS_ZK_REGION_SPLIT > >> > > > ----------------------------- > >> > > > > >> > > > The "transitioned node from RS_ZK_REGION_SPLIT to > RS_ZK_REGION_SPLIT" > >> > > > continues for 15 or so hours and finally settles without manual > >> > > > intervention with these regionserver log messages: > >> > > > ----------------------- > >> > > > 2012-11-02 13:55:00,906 DEBUG > >> > org.apache.hadoop.hbase.zookeeper.ZKAssign: > >> > > > regionserver:60020-0x13ab46479832953 Attempting to transition > node * > >> > > > bc62a8a72124a4ba3f6b9f302587903c* from RS_ZK_REGION_SPLIT to > >> > > > RS_ZK_REGION_SPLIT > >> > > > > >> > > > 2012-11-02 13:55:00,916 DEBUG > >> > org.apache.hadoop.hbase.zookeeper.ZKAssign: > >> > > > regionserver:60020-0x13ab46479832953 Successfully transitioned > node * > >> > > > bc62a8a72124a4ba3f6b9f302587903c* from RS_ZK_REGION_SPLIT to > >> > > > RS_ZK_REGION_SPLIT > >> > > > > >> > > > 2012-11-02 13:55:00,916 INFO > >> > > > org.apache.hadoop.hbase.regionserver.SplitRequest: Region split, > META > >> > > > updated, and report to master. > >> > > > > >> > > > > >> > > > >> > > >> > Parent=ActiveListingRecord16,\x83\x07\xDC\x07\x01Obeo\x00690461,1351816858693. > >> > > > *bc62a8a72124a4ba3f6b9f302587903c*., new regions: > >> > > > > >> > > > > >> > > > >> > > >> > ActiveListingRecord16,\x83\x07\xDC\x07\x01Obeo\x00690461,1351824327023.22c3fa48d17aa7312ca53566c680f0fd., > >> > > > > >> > > > > >> > > > >> > > >> > ActiveListingRecord16,\x83\x07\xDC\x07\x11WebsiteIDX\x009024215,1351824327023.b0e0a488c711e5c7f74ee6198a9755a2.. > >> > > > Split took 15hrs, 9mins, 33sec > >> > > > > >> > > > 2012-11-02 13:55:00,945 INFO > >> > > > org.apache.hadoop.hbase.regionserver.SplitRequest: Region split, > META > >> > > > updated, and report to master. > >> > > > > >> > > > > >> > > > >> > > >> > Parent=ActiveListingRecord16,\x83\x07\xDC\x06\x0EThreeWide\x00SWMRIC-11001540,1351790329631.f720436a6f8fd412d76fe3255f24e3b3., > >> > > > new regions: > >> > > > > >> > > > > >> > > > >> > > >> > ActiveListingRecord16,\x83\x07\xDC\x06\x0EThreeWide\x00SWMRIC-11001540,1351816858693.2880cf893175d2a852947c63ee8554a3., > >> > > > > >> > > ActiveListingRecord16,\x83\x07\xDC\x07\x01Obeo\x00690461,1351816858693.* > >> > > > bc62a8a72124a4ba3f6b9f302587903c*.. Split took 17hrs, 14mins, 2sec > >> > > > ---------------------- > >> > > > > >> > > > And the master finally logs this: > >> > > > ----------------------- > >> > > > 2012-11-02 13:55:00,783 WARN > >> > > > org.apache.hadoop.hbase.master.AssignmentManager: Region > >> > > > bc62a8a72124a4ba3f6b9f302587903c not found on server > >> > > > HadoopNode162.hotpads.srv,60020,1351788248279; failed processing > >> > > > > >> > > > 2012-11-02 13:55:00,783 WARN > >> > > > org.apache.hadoop.hbase.master.AssignmentManager: Received SPLIT > for > >> > > region > >> > > > bc62a8a72124a4ba3f6b9f302587903c from server > >> > > > HadoopNode162.hotpads.srv,60020,1351788248279 but it doesn't exist > >> > > anymore, > >> > > > probably already processed its split > >> > > > ------------------------ > >> > > > > >> > > > I can't find any evidence that the region left the node during > that > >> > time. > >> > > > I'll have to catch it in action next time and see what the region > is > >> up > >> > > to > >> > > > during the problem period. > >> > > > > >> > > > What does it mean that it successfully transitioned from SPLIT to > >> > SPLIT? > >> > > > Is that a valid transition? > >> > > > > >> > > > Matt > >> > > > > >> > > > > >> > > > > >> > > > On Sat, Nov 3, 2012 at 2:55 PM, Ted Yu <[email protected]> > wrote: > >> > > > > >> > > > > Matt: > >> > > > > From the following we can see that region > >> > > > bc62a8a72124a4ba3f6b9f302587903c > >> > > > > cannot be found: > >> > > > > > >> > > > > 2012-11-02 00:00:02,909 DEBUG > >> > > > > org.apache.hadoop.hbase.master.AssignmentManager: Handling > >> > > > > transition=RS_ZK_REGION_SPLIT, > >> > > > > server=HadoopNode162.hotpads.srv,60020,1351788248279, > >> > > > > region=bc62a8a72124a4ba3f6b9f302587903c > >> > > > > 2012-11-02 00:00:02,909 WARN > >> > > > > org.apache.hadoop.hbase.master.AssignmentManager: Region > >> > > > > bc62a8a72124a4ba3f6b9f302587903c *not found on server > >> > > > > HadoopNode162.hotpads*.srv,60020,1351788248279;failed > >> > > > > processing > >> > > > > 2012-11-02 00:00:02,909 WARN > >> > > > > org.apache.hadoop.hbase.master.AssignmentManager: Received SPLIT > >> for > >> > > > region > >> > > > > bc62a8a72124a4ba3f6b9f302587903c from server > >> > > > > HadoopNode162.hotpads.srv,60020,1351788248279 but it doesn't > exist > >> > > > anymore, > >> > > > > probably already processed its split > >> > > > > > >> > > > > Have you run hbck to repair your cluster ? > >> > > > > > >> > > > > Thanks > >> > > > > > >> > > > > On Sat, Nov 3, 2012 at 2:29 PM, Matt Corgan < > [email protected]> > >> > > wrote: > >> > > > > > >> > > > > > Here's a sample of the master's logs from yesterday. It's not > >> > > > correlated > >> > > > > > exactly with the other pastebin log, but there's 3GB of this > from > >> > > > > > yesterday: http://pastebin.com/wP2rNN1t > >> > > > > > > >> > > > > > I'm am pushing the cluster a bit with importing data so > testing > >> the > >> > > > split > >> > > > > > code harder than normal. The regions are 500-1GB gzipped. I > can > >> > > look > >> > > > > into > >> > > > > > it more but trying to figure out what to look for. > >> > > > > > > >> > > > > > Thanks Ted, > >> > > > > > Matt > >> > > > > > > >> > > > > > > >> > > > > > On Sat, Nov 3, 2012 at 2:03 PM, Ted Yu <[email protected]> > >> > wrote: > >> > > > > > > >> > > > > > > Matt: > >> > > > > > > This is the method which made the logging: > >> > > > > > > private static int tickleNodeSplit(ZooKeeperWatcher zkw, > >> > > > > > > HRegionInfo parent, HRegionInfo a, HRegionInfo b, > >> > ServerName > >> > > > > > > serverName, > >> > > > > > > final int znodeVersion) > >> > > > > > > throws KeeperException, IOException { > >> > > > > > > byte [] payload = Writables.getBytes(a, b); > >> > > > > > > return ZKAssign.transitionNode(zkw, parent, serverName, > >> > > > > > > EventType.RS_ZK_REGION_SPLIT, > >> EventType.RS_ZK_REGION_SPLIT, > >> > > > > > > znodeVersion, payload); > >> > > > > > > } > >> > > > > > > > >> > > > > > > transitionZKNode() calls tickleNodeSplit() when waiting for > >> > master > >> > > to > >> > > > > > split > >> > > > > > > the region. Obviously something caused the master not able > to > >> > > split. > >> > > > > > > > >> > > > > > > How large is the region ? > >> > > > > > > > >> > > > > > > Can you pastebin master log for that period of time ? > >> > > > > > > > >> > > > > > > Thanks > >> > > > > > > > >> > > > > > > On Sat, Nov 3, 2012 at 1:54 PM, Matt Corgan < > >> [email protected] > >> > > > >> > > > > wrote: > >> > > > > > > > >> > > > > > > > We upgraded from .94.0 to .94.2 last week and have > started to > >> > > > > encounter > >> > > > > > > > infinite loops of region-transition on splits. I'm not > sure > >> > yet > >> > > if > >> > > > > > it's > >> > > > > > > > all splits nor if it's related to load. Solution so far > has > >> > been > >> > > > to > >> > > > > > > > restart the regionserver process. > >> > > > > > > > > >> > > > > > > > log snippet: > >> > > > > > > > http://pastebin.com/LpienZ7B > >> > > > > > > > > >> > > > > > > > It's repeating these two lines: > >> > > > > > > > 2012-11-02 01:35:33,312 DEBUG > >> > > > > > org.apache.hadoop.hbase.zookeeper.ZKAssign: > >> > > > > > > > regionserver:60020-0x13ab46479832b76 Attempting to > transition > >> > > node > >> > > > > > > > cf3e9bc069e1888983c06dc8e053ffcf from RS_ZK_REGION_SPLIT > to > >> > > > > > > > RS_ZK_REGION_SPLIT > >> > > > > > > > 2012-11-02 01:35:33,364 DEBUG > >> > > > > > org.apache.hadoop.hbase.zookeeper.ZKAssign: > >> > > > > > > > regionserver:60020-0x13ab46479832b76 Successfully > >> transitioned > >> > > node > >> > > > > > > > cf3e9bc069e1888983c06dc8e053ffcf from RS_ZK_REGION_SPLIT > to > >> > > > > > > > RS_ZK_REGION_SPLIT > >> > > > > > > > > >> > > > > > > > with the occasional: > >> > > > > > > > 2012-11-02 01:35:34,476 DEBUG > >> > > > > > > > org.apache.hadoop.hbase.regionserver.SplitTransaction: > Still > >> > > > waiting > >> > > > > on > >> > > > > > > the > >> > > > > > > > master to process the split for > >> > cf3e9bc069e1888983c06dc8e053ffcf > >> > > > > > > > > >> > > > > > > > Should the region transition from RS_ZK_REGION_SPLIT to > >> itself? > >> > > It > >> > > > > > looks > >> > > > > > > > wrong, but I'm not familiar with the code at all. > >> > > > > > > > > >> > > > > > > > Thanks, > >> > > > > > > > Matt > >> > > > > > > > > >> > > > > > > > >> > > > > > > >> > > > > > >> > > > > >> > > > >> > > >> >
