We have cluster with 22 data nodes and 3 dedicated master nodes running ES
1.1.0. Data nodes have 16 GB of memory (half given to JVM heap) and the
dedicated masters have 4 GB (half for heap). Data nodes have consistent
memory usage (about 50-60%) but we're observing that the master node is
constantly growing and shrinking it's memory use (after GC) every 5
minutes. See the bigdesk graph.
I'm curious as to why the master node is using up close to 1.5 GB of
memory. I thought that maintaining cluster state shouldn't take up that
much memory and master nodes should be able to work with much less memory.
Anybody know why?
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