I don't understand why the tracer node is not generated at all. Best regards, Yamini Joshi
On Fri, Oct 7, 2016 at 10:19 AM, Yamini Joshi <yamini.1...@gmail.com> wrote: > So the file structure inside zookeeper(now after formatting zookeepers) is: > Accumulo > > - d61d7dd5-0f11-437b-9152-d3f171f9af33 > - users > - monitor > - problems > - root_tablet > - gc > - hdfs_reservations > - table_locks > - namespaces > - recovery > - fate > - tservers > - tables > - replication > - next_file > - config > - bulk_failed_copyq > - dead > - masters > - instances > - test > > test is the name of my new instance. Yes I reinitialized accumulo using > /bin/accumulo init > > Best regards, > Yamini Joshi > > On Fri, Oct 7, 2016 at 10:12 AM, Michael Wall <mjw...@gmail.com> wrote: > >> Yep, I was running 1.6 >> >> On Fri, Oct 7, 2016 at 11:08 AM Sean Busbey <bus...@cloudera.com> wrote: >> >>> tracers used to be under the instance id in 1.6. I can confirm that in >>> 1.7.2 it is definitely at /tracers. I just ran into this issue last >>> week. >>> >>> @Yamini where do you get the Node does not exist error? Could you >>> copy/paste the whole stacktrace? When I followed the same workaround >>> Josh mentioned, restarting the Trace servers was sufficient to have >>> the znode recreated. >>> >>> On Fri, Oct 7, 2016 at 10:01 AM, Josh Elser <josh.el...@gmail.com> >>> wrote: >>> > I had pulled up 1.7.2 and I thought /tracers was at the root of >>> ZooKeeper >>> > (not within the /accumulo/$instance.id znode). Maybe I looked at the >>> wrong >>> > code though? >>> > >>> > Michael Wall wrote: >>> >> >>> >> Maybe this is already known, so apologies in advance. But don't you >>> >> need to do >>> >> >>> >> $ $ZOOKEEPER_HOME/bin/zkCli.sh -server m4:2181,m5:2181,m6:2181 >>> >>> >>> >>> rmr accumulo/WHATEVER-INSTANCE-ID/tracers >>> >> >>> >> >>> >> instead of rmr /tracers >>> >> >>> >> If you don't know the instance id, I you can do the following in >>> zookeeper >>> >> >>> >> get /accumulo/instances/INSTANCE_NAME >>> >> >>> >> >>> >> >>> >> On Thu, Oct 6, 2016 at 6:26 PM, Josh Elser <josh.el...@gmail.com >>> >> <mailto:josh.el...@gmail.com>> wrote: >>> >> >>> >> Uh, I am confused now. /tracers/ is the default parent znode that >>> >> the Accumulo Tracer process registers itself in. We can also see >>> >> this is what was happening with your snippet. >>> >> >>> >> I don't understand how that would not exist. Have you properly >>> >> configured ZooKeeper to act as a quorom? (e.g. if you zkCli.sh >>> >> -server to your ZK servers individually, do you see a consistent >>> >> view of ZK?) >>> >> >>> >> You can try to remove the directory in HDFS you configured >>> Accumulo >>> >> to use, and re `accumulo init` to get back to an initial state. >>> I'm >>> >> not sure how you got into this situation to begin with. >>> >> >>> >> Yamini Joshi wrote: >>> >> >>> >> 1.7.2 >>> >> >>> >> >>> >> Best regards, >>> >> Yamini Joshi >>> >> >>> >> On Thu, Oct 6, 2016 at 4:17 PM, Josh Elser < >>> josh.el...@gmail.com >>> >> <mailto:josh.el...@gmail.com> >>> >> <mailto:josh.el...@gmail.com <mailto:josh.el...@gmail.com>>> >>> >> wrote: >>> >> >>> >> Hrm, maybe I am looking at a newer version of Accumulo >>> than >>> >> what >>> >> you're using. What version are you on? >>> >> >>> >> Yamini Joshi wrote: >>> >> >>> >> Thank you for replying Josh. >>> >> I am getting this error: >>> >> Node does not exist: /tracers >>> >> >>> >> I did ls and saw accumulo there. Should I delete >>> that? >>> >> When I try to delete accumulo, it gives me a >>> >> Authentication is >>> >> not valid >>> >> error. >>> >> >>> >> Best regards, >>> >> Yamini Joshi >>> >> >>> >> On Thu, Oct 6, 2016 at 2:57 PM, Josh Elser >>> >> <josh.el...@gmail.com <mailto:josh.el...@gmail.com> >>> >> <mailto:josh.el...@gmail.com <mailto:josh.el...@gmail.com>> >>> >> <mailto:josh.el...@gmail.com <mailto:josh.el...@gmail.com> >>> >> <mailto:josh.el...@gmail.com <mailto:josh.el...@gmail.com>>>> >>> >> wrote: >>> >> >>> >> Hi Yamini, >>> >> >>> >> The /tracers node in ZooKeeper was likely >>> >> initialized >>> >> previously >>> >> using an Accumulo configuration that has a >>> >> different value for >>> >> instance.secret. You can delete this znode to >>> move >>> >> forward >>> >> if you >>> >> have no other Accumulo instance you intend to >>> run >>> >> on this >>> >> ZK instance. >>> >> >>> >> $ $ZOOKEEPER_HOME/bin/zkCli.sh -server >>> >> m4:2181,m5:2181,m6:2181 >>> >> > rmr /tracers >>> >> >>> >> You can also set a different value for >>> >> trace.zookeeper.path in >>> >> accumulo-site.xml. After doing this, you can try >>> >> running a >>> >> start-all.sh again to start the tracer. >>> >> >>> >> You also mentioned that the Monitor did not >>> start >>> >> but did not >>> >> include an exception for that service. The >>> error you >>> >> included only >>> >> shows that the Accumulo Master/TabletServer did >>> not >>> >> correctly start >>> >> and assign the system tables (accumulo.root and >>> >> accumulo.metadata). >>> >> >>> >> >>> >> Yamini Joshi wrote: >>> >> >>> >> Hello all >>> >> >>> >> I am trying to configure a multinode cluster >>> >> with >>> >> accumulo. I am >>> >> using 3 >>> >> machines with the config as follows: >>> >> >>> >> M4: Hadoop Master/Acc Slave >>> >> M5: Accumulo Master/Monitor/Gc >>> >> M6: Slave >>> >> >>> >> I have configured zookeeper ensemble on the >>> >> cluster >>> >> with all the 3 >>> >> nodes. The Hadoop part seems to work fine, I >>> >> can see >>> >> the console >>> >> and run >>> >> MR jobs easily. I can also see the zookeeper >>> >> cluster >>> >> with M2 as the >>> >> leader. My problem is with accumulo, after >>> >> accumulo init: >>> >> bin/accumulo init >>> >> which seems to run without any error, >>> after >>> >> I isuue >>> >> the command >>> >> bin/start-all.sh >>> >> the Monitor process can't start. I am >>> >> getting this >>> >> error in >>> >> my tracer log: >>> >> [start.Main] ERROR: Thread 'tracer' died. >>> >> >>> >> org.apache.zookeeper.KeeperException$NoAuthException: >>> >> KeeperErrorCode = >>> >> NoAuth for /tracers/trace- >>> >> at >>> >> >>> >> >>> >> >>> >> org.apache.zookeeper.KeeperException.create(KeeperException.java:113) >>> >> at >>> >> >>> >> >>> >> >>> >> org.apache.zookeeper.KeeperException.create(KeeperException.java:51) >>> >> at >>> >> org.apache.zookeeper.ZooKeeper >>> .create(ZooKeeper.java:783) >>> >> at >>> >> >>> >> >>> >> >>> >> org.apache.accumulo.fate.zookeeper.ZooUtil.putEphemeralSeque >>> ntial(ZooUtil.java:464) >>> >> at >>> >> >>> >> >>> >> >>> >> org.apache.accumulo.fate.zookeeper.ZooReaderWriter.putEpheme >>> ralSequential(ZooReaderWriter.java:99) >>> >> at >>> >> >>> >> >>> >> >>> >> org.apache.accumulo.tracer.TraceServer.registerInZooKeeper(T >>> raceServer.java:304) >>> >> at >>> >> >>> >> >>> >> >>> >> org.apache.accumulo.tracer.TraceServer.<init>(TraceServer.java:241) >>> >> at >>> >> >>> >> >>> >> org.apache.accumulo.tracer.TraceServer.main(TraceServer.jav >>> a:346) >>> >> at >>> >> >>> >> >>> >> >>> >> org.apache.accumulo.tracer.TracerExecutable.execute(TracerEx >>> ecutable.java:33) >>> >> at >>> >> org.apache.accumulo.start.Main$1.run(Main.java:120) >>> >> at java.lang.Thread.run(Thread.ja >>> va:745) >>> >> >>> >> And this in my monitor debug log: >>> >> Failed to locate tablet for table : !0 row : >>> >> ~err_\100 >>> >> >>> >> I can see that the accumulo dir has been >>> >> created in the >>> >> HDFS. >>> >> Can anyone >>> >> please guide me set this up? I am attaching >>> my >>> >> config >>> >> files here >>> >> (Rest >>> >> all the same generated as a result of >>> >> bin_config file). >>> >> >>> >> Best regards, >>> >> Yamini Joshi >>> >> >>> >> >>> >> >>> >> >>> > >>> >>> >>> >>> -- >>> busbey >>> >> >
