We have upgraded from Lucene 3.6 to 4.4.On the production we faced high minor GC time. Heap dump showed that one of the biggest objects by size is org.apache.lucene.util.WeakIdentityMap$IdentityWeakReference. About 11 million instances with about 377 megabytes of memory in total (this is not even retained size). Here is screenshot of the JProfiler output: https://dl.dropboxusercontent.com/u/16254496/Screen%20Shot%202013-08-07%20at%205.35.22%20PM.png.
The keys of the map are MMapIndexInput. What this map is for and how can I reduce it memory usage? --- Denis Bazhenov <bazhe...@farpost.com> FarPost. --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
