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From Enrico Olivelli <eolive...@gmail.com>
Subject Re: The current epoch, 7, is older than the last zxid, 8589935882
Date Tue, 20 Aug 2019 19:28:04 GMT
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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