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From Anand Parthasarathy <anpar...@avinetworks.com>
Subject Zookeeper quorum goes down for no apparent reason in 3.4.5
Date Wed, 04 Oct 2017 18:17:37 GMT

We have an issue with a 3-node zookeeper ensemble where the quorum goes
down due to no apparent reason every once in a while. Here is what I see in
the ZK leader:

2017-09-21 03:00:03,648 [myid:3] - INFO  [QuorumPeer[myid=3]/
:Leader@493] - Shutting down
2017-09-21 03:00:03,648 [myid:3] - INFO  [QuorumPeer[myid=3]/
:Leader@499] - Shutdown called
java.lang.Exception: shutdown Leader! reason: Not sufficient followers
synced, only synced with sids: [ 3 ]
    at org.apache.zookeeper.server.quorum.Leader.shutdown(Leader.java:499)
    at org.apache.zookeeper.server.quorum.Leader.lead(Leader.java:474)

I have attached the logs from the 3 nodes around this time. Could you pls.
help understand what the issue could be here. The only thing I see a little
bit ahead of this timestamp is that all of them did a PurgeTask pretty much
at the same time.


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