High JVM Memory After upgrading Elasticsearch to version 1.3.4

Hi ,
We have upgraded our Elasticsearch cluster to version 1.3.4, after the
upgrade we see that the JVM memory grow from 60 to 99% in a few hours, when
the JVM memory reaches 99% some of the machines disconnect from the
cluster and reconnect again.
In addition , when the JVM memory reaches 90%+ it does not return to
normal , the only thing that helps to reduce the JVM memory back to normal
is a cluster restart.

I have added Elasticsearch diagnostic(esdiagdump.sh) script output , so you
could check our cluster stats.
Please advise ?


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