http://wiki.apache.org/cassandra/MemtableThresholds#JVM_Heap_Size
On Wed, Mar 30, 2011 at 11:41 AM, Peter Schuller < peter.schul...@infidyne.com> wrote: > > I have 6 node cassandra cluster all are setup with same > > configuration I am getting fatal exceptions in one of the nodes > > ERROR [Thread-604] 2011-03-29 20:19:13,218 AbstractCassandraDaemon.java > > (line 114) Fatal exception in thread Thread[Thread-604,5,main] > > java.lang.OutOfMemoryError: Java heap space > > ERROR [Thread-607] 2011-03-29 19:47:29,272 AbstractCassandraDaemon.java > > (line 114) Fatal exception in thread Thread[Thread-607,5,main] > > java.lang.OutOfMemoryError: Java heap space > > ERROR [Thread-605] 2011-03-29 19:38:09,081 AbstractCassandraDaemon.java > > (line 114) Fatal exception in thread Thread[Thread-605,5,main] > > java.lang.OutOfMemoryError: Java heap space > > ERROR [MutationStage:2] 2011-03-29 19:37:16,659 > > DebuggableThreadPoolExecutor.java (line 103) Error in ThreadPoolExecutor > > java.lang.OutOfMemoryError: Java heap space > > ERROR [GossipStage:1] 2011-03-29 20:27:29,898 > AbstractCassandraDaemon.java > > (line 114) Fatal exception in thread Thread[GossipStage:1,5,main] > > java.lang.OutOfMemoryError: Java heap space > > > > All all the nodes have 32 G of ram. > > > > Everytime I try to restart the failed node I get the above errors. > > Unless something is outright wrong, it sounds like you need to > increase your JVM heap size in cassandra-env.sh. That you're getting > it on start-up sounds consistent with commit log reply filling the > heap in the form of memtables that are sized too big for your heap. > > There's a wiki page somewhere that describes the overall rule of thumb > for heap sizing, but I can't find it right now. > > -- > / Peter Schuller > -- Narendra Sharma Solution Architect *http://www.persistentsys.com* *http://narendrasharma.blogspot.com/*
