Hi Brian did you see my follow up questions here http://www.mail-archive.com/user@cassandra.apache.org/msg24840.html
Cheers ----------------- Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 12/09/2012, at 11:52 PM, Brian Jeltema <brian.jelt...@digitalenvoy.net> wrote: > I'm a fairly novice Cassandra/Hadoop guy. I have written a Hadoop job (using > the Cassandra/Hadoop integration API) > that performs a full table scan and attempts to populate a new table from the > results of the map/reduce. The read > works fine and is fast, but the table insertion is failing with OOM errors > (in the Cassandra VM). The resulting heap dump from one node shows that > 2.9G of the heap is consumed by a JMXConfigurableThreadPoolExecutor that > appears to be full of batch mutations. > > I'm using a 6-node cluster, 32G per node, 8G heap, RF=3, if any of that > matters. > > Any suggestions would be appreciated regarding configuration changes or > additional information I might > capture to understand this problem. > > Thanks > > Brian J
