: 5-6 days after fresh index index size suddenly increased (no optimization in : between) by 150GB and then query takes long time and java heap error comes. : I run optimize in this index Its takes long time and result it increase : index size more more then 200GB and it didn't show about optimize completed. : merge factor is default as given in solr build.
did you check your logs? this smells like maybe a failure during commit or optimize (OOM maybe?) that resulted in old files not being cleaned up on disk ... particularly you "didn't show about optimize completed." comment. There is a CheckIndex tool that you can use (google for details in lucene-java mailing list) which *should* tell you if there are extra segments (i don't remember the details to be certain). -Hoss
