> Cassandra version is : apache-cassandra-1.2.4
The latest 1.2 version is 1.2.13, you really should be on that.
> commitlog_total_space_in_mb: 16
> commitlog_segment_size_in_mb: 16
Reducing the total commit log size to 16 MB is a very bad idea, you should
return it to 4096 and the segment size
I'd suggest setting some cassandra jvm parameters so that you can analyze a
heap dump and peek through the gc logs. That'll give you some clues e.g.
if the memory problem is growing steadily or suddenly, and clues from a
peek at which object are using the memory.
-XX:+HeapDumpOnOutOfMemoryError
