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From AALISHE <aali...@gmail.com>
Subject How to restore a snapshot after an accidental ZKclenup
Date Sun, 21 Feb 2016 08:29:11 GMT
Hi all,

I have a CDH cluster with  ZK 3.4.5   running on 3 nodes ....and one of the
developers accidentlly ran an API command that does  zooKeeperCleanUp

I didnt know before this about ZK needing backups .... so there is no
backup(s) on-hand.

But I see some kind logs and snapshot files under zookeeper lib/data
(attached as well)

65M Feb 19 05:48   log.900000001
18K Feb 19 07:19    snapshot.9000000a0
65M Feb 19 08:14    log.a00000001
18K Feb 19 08:21     snapshot.a00000759
65M Feb 19 08:22     log.b00000001
17K Feb 19 08:27     snapshot.c00000000
2 Feb 19 11:39        acceptedEpoch
21K Feb 19 11:39     snapshot.c000016c7
2 Feb 19 11:39         currentEpoch
129M Feb 20 04:21    log.c00000001
21K Feb 20 04:21     snapshot.d000184ec
65M Feb 20 17:50    log.d000184ed
23K Feb 20 17:50    snapshot.d0002bf88
4.0K Feb 20 17:50 .
65M Feb 21 03:24 log.d0002bf89



this incident happened  on  *Feb 20 17:50 *   .... as you can see the
snapshot and log files stamped with earlier hour *Feb 20 04:21  *are larger
insize....


I think these last 2 files might the restore candidates?  if Yes  ... how
do I properly restore to that point ??


cheers!

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