at ES documentations is says - By default, Elasticsearch uses heuristics in order to automatically trigger flushes as required.
does anyone knows when ES triggers flush to disk and if there is a way to configure it..
we saw that when running a heavy indexing process, and the RAM is getting full, flash to disk happens every few seconds, and that slows our indexing speed..
with Solr you have the ability to control when a this flash runs (called hard commit)
any ideas what can we do to control it?