To clarify things Our setup contains of 8 nodes of 32 gb ram... with a heap_max size of 12gb and heap new size of 1.6 gb
The load on our nodes is write/read ratio of 10 with 6 main Column Families. Although the flushes of column families occur every hour with sstables sizes of around 50-100 mb. The memtable size for those seems to be around 500mb. (Is this 10-20 times overhead expected). Also This is the first time I'm seeing max Heap size reached Exceptions. Could there be a significant reason to this other than that the cassandra server were running without restarting for 2 months, On Wed, Jun 13, 2012 at 6:30 PM, rohit bhatia <rohit2...@gmail.com> wrote: > Hi > > My cassandra node went out of heap memory with this message > "GCInspector.java(line 88): Heap is .9934 full." Is this expected? or > should I adjust my flush_largest_memtable_at variable. > > Also one change I did in my cluster was add 5 Column Families which are empty > Should empty ColumnFamilies cause significant increase in cassandra heap > usage? > > Thanks > Rohit
