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.
<https://lh6.googleusercontent.com/-03s6N1l4oQ8/U8ayMdqO86I/AAAAAAAAABg/BWC91tetsvk/s1600/Screen+Shot+2014-07-16+at+1.04.25+PM.png> 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? -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/6a273add-a20b-41ab-9941-e6c9197389c0%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
