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From Debraj Manna <subharaj.ma...@gmail.com>
Subject Re: The current epoch, 7, is older than the last zxid, 8589935882
Date Wed, 21 Aug 2019 03:24:44 GMT
Thanks for replying.

What is the recommended way to remove a node and delete all data from it
and make it start fresh?

On Wed 21 Aug, 2019, 12:58 AM Enrico Olivelli, <eolivelli@gmail.com> wrote:

> Hello,
> Sorry for so late reply.
> If you have 3 servers you can nuke the broken one and make it start from
> scratch, it will join the cluster and then recover data from the other
> servers
>
> Try it in a staging env, not in production
>
> Enrico
>
> Il mar 20 ago 2019, 20:30 Debraj Manna <subharaj.manna@gmail.com> ha
> scritto:
>
> > The same has been asked in stackoverflow
> > <
> >
> https://stackoverflow.com/questions/57574298/zookeeper-error-the-current-epoch-is-older-than-the-last-zxid
> > >
> > also. But no response there also.
> >
> > Anyone any thoughts on this one?
> >
> > On Tue, Aug 20, 2019 at 4:43 PM Debraj Manna <subharaj.manna@gmail.com>
> > wrote:
> >
> > > Posted wrong Jira link. I meant
> > > https://issues.apache.org/jira/browse/ZOOKEEPER-2354.  Can someone let
> > me
> > > know what is the recommended way to recover the node?
> > >
> > > support@platform2:/var/lib/zookeeper/version-2$ sudo cat acceptedEpoch
> > > 8support@platform2:/var/lib/zookeeper/version-2$ sudo cat currentEpoch
> > > 7support@platform2:/var/lib/zookeeper/version-2$ sudo cat
> > currentEpoch.tmp
> > > 8support@platform2
> > >
> > > On Tue, Aug 20, 2019 at 3:14 PM Debraj Manna <subharaj.manna@gmail.com
> >
> > > wrote:
> > >
> > >> Hi
> > >>
> > >> I am using a zookeeper ensemble of 3 nodes running 3.4.13. Sometimes
> > >> after reboot of machine zookeeper is not starting and I am seeing the
> > below
> > >> errors in logs.
> > >>
> > >> I have seen https://issues.apache.org/jira/browse/ZOOKEEPER-1653 .
> Can
> > >> someone let me if this is fixed in 3.4.13 or not as I can see the
> issue
> > >> still open? Also can somone suggest what is the recommended way to
> > recover
> > >> the set-up ?
> > >>
> > >> 2019-08-19 04:18:36,906 [myid:2] - ERROR [main:QuorumPeer@692] -
> Unable
> > >> to load database on disk
> > >> java.io.IOException: The current epoch, 7, is older than the last
> zxid,
> > >> 34359738370
> > >> at
> > >>
> >
> org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:674)
> > >> at
> > >>
> org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:635)
> > >> at
> > >>
> >
> org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:170)
> > >> at
> > >>
> >
> org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:114)
> > >> at
> > >>
> >
> org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:81)
> > >> 2019-08-19 04:18:36,908 [myid:2] - ERROR [main:QuorumPeerMain@92] -
> > >> Unexpected exception, exiting abnormally
> > >> java.lang.RuntimeException: Unable to run quorum server
> > >> at
> > >>
> >
> org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:693)
> > >> at
> > >>
> org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:635)
> > >> at
> > >>
> >
> org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:170)
> > >> at
> > >>
> >
> org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:114)
> > >> at
> > >>
> >
> org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:81)
> > >> Caused by: java.io.IOException: The current epoch, 7, is older than
> the
> > >> last zxid, 34359738370
> > >> at
> > >>
> >
> org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:674)
> > >> ... 4 more----
> > >>
> > >>
> > >>
> >
>

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