this is my first post, and I'm slowly finding my way into the Elastic world.... I've just saw this high unusual peak in my Elasticsearch cluster
According to the elastic-hq my elasticsearch cluster has a rather high search-query and search-fetch time
Search - Query: is ~ 237.34ms
Search - Fetch: is ~ 36.23ms (!!)
especially the last one is according to the elastichq plugin rather critical.
My elasticsearch node however is not really busy (low load or memory consumption).
Any idea where to look at or what the root cause could be if the system is actually in a healthy state?!
Also last week the elasticsearch cluster wasn't available because it crashed with a out-of-memory error (java heap -size was out of memory....HeapDumpOnOutOfMemoryError)
the Elasticsearch nodes have the following hardware specs:
whereas 12GB are now reservered for the java heap-size (prior to the crash it was only 6GB!!).
I'm currently investigating why this happened to be able to prevent this from happening in the future,... so more or less predictive maintenance. I have currently aggregated 1.4TB of log data
The elasticsearch configuration is:
Many thanks in advance,