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Posted to mapreduce-user@hadoop.apache.org by mail list <lo...@gmail.com> on 2014/10/28 07:35:26 UTC
Question about the zkfc
hi todd,
Recently we use the QJM for HA, and i read the zkfc_design. I have a question,
IMO, each zkfc hold a connection to zookeeper with an ephemeral node,
And i worry about the network between zkfc and zookeeper node
is not very stable(lost at a moment and recovery soon), which may cause the connection is lost,
according to the design, this will cause a failover, but i think the failover is not necessary.
All above are just my opinion, am i wrong or there is a retry mechanism when the network is not so
stable.
My regards & Best wishes!