On 8/20/10 1:58 PM, Julie wrote:
Julie<julie.sugar<at> nextcentury.com> writes:
Please see previous post but is hinted handoff a factor if the CL is set to ALL?
Your previous post looks like a flush or compaction is causing the node
to mark its neighbors down. Do you see correlation between memtable
flushes or compaction and the GMFD marking? Are you running a version of
Cassandra (<=0.6.4) which has the MESSAGE-DESERIALIZER-POOL bug, and/or
are you seeing a backup there? That can cause GMFD to incorrectly mark
nodes down..
https://issues.apache.org/jira/browse/CASSANDRA-1358
However you are correct, I missed that you are writing at CL.ALL. With
CL.ALL, you should get an exception if nodes are unreachable during a
write. This means that Hinted Handoff is unlikely to be the culprit for
your usage bloat. As you clearly have nodes which are occasionally
considered unreachable.. are you seeing those exceptions?
=Rob
