AnsweredAssumed Answered

what to do when ZK is down?

Question asked by gabi_k on Oct 8, 2011
Latest reply on Mar 3, 2015 by rhinomike
Hi,

I have 3 servers (nodes) on my M3 cluster,

I am trying to check if I could work if one of the nodes will go down (not the CLDB server) 
I have 1 CLDB node and 3 ZK (on all of the 3 nodes cluster) so one of them is also ZK and also CLDB. 

When 1 of the nodes is down, the whole cluster not work, I got  
"Couldn't connect to the CLDB service. Check if at least one CLDB is running" on the admin ui web 
and on the cldb.log: 
...

2011-10-09 16:45:06,847 WARN  com.mapr.fs.cldb.zookeeper.ZooKeeperClient [pool-1-thread-5]: ZooKeeperClient: Could not fetch informatino about current Master 
2011-10-09 16:45:25,004 FATAL com.mapr.fs.cldb.CLDB [ReplicationManagerThread]: CLDBShutdown: ZooKeeperClient : KvStoreContainerInfo read failed from ZooKeeper. Stopping CLDB 
...


Why if one of my data nodes are down the cldb go and shut himself?

Thanks,
Gabi.

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