Solr Collection setup Shards :- 2Replication :- 4Documents :- 569 Million (I know it's too much)Heap Space :- 12GB So basically, above collection is having OutOfMemory issues. And upon inspection, I got to know that org.apache.lucene.uninverting.FieldCacheImpl$LongsFromArray for field "_version_" is taking around 50 - 60% memory(5GB). Now I am trying to understand How "_version_" internally using the field cache? Around the same time, In Splunk logs I can see "Found MAX value from Terms for _version_ in index". and also few "firstSearcher" queries. Now I think upon core initialization "firstSearcher" triggered which then try to find the Max value for version using Field Cache but because of too many records it occupy lot of memory to carry out the task. Can someone please validate Is what I am talking in above para is the problem or problem lies in somewhere else?
Best Regards,Sanjay
