may be someone have an idea, we have swithced to the Elastic search while ago, when it was introduced to the IPB. At the begining we have trouble with CPU utilisation, but them it was resolved by the IPB team.
Since them Elastic was running smooth and reliable
Recently after uprade to 4.4.4 we got the trouble with cashing and switch to Redis from Memcache.
After this we strarted having problems with Elasticsearch, since it starting to shutdown after 2-3 days with the error "OutOfMemory error Java heap space".
There was no change in config of Elastic. We encreased the Max heap space to 24 GB, but this doesnt help. It just constantly consumes memory, until crash. We also upgraded Elastic to 6.8.2, but didnt help also.
Any body have an idea where to look?