THX for your reply ,Jonathan. On Sun, Jun 13, 2010 at 11:27 AM, Jonathan Ellis <jbel...@gmail.com> wrote:
> On Sat, Jun 12, 2010 at 7:46 PM, Anty <anty....@gmail.com> wrote: > > Hi:ALL > > I have 10 nodes cluster ,after inserting many records into the cluster, i > > compact each node by nodetool compact. > > 5000 uncompacted sstables is unusual. did you disable compaction > during your inserts? that is dangerous. > No, i do not disable compaction during my inserts. It is weird the minor compaction is triggered less ofen. I don't known why.Do you have any idea about this? > > > during the compaciton process ,something wrong with one of the 10 nodes > , > > when the size of the compacted temp file rech nearly 100GB( before > > compaction ,the size is ~240G) > > sounds like it just didn't have enough memory to compact 5000 sstables > at once. not very surprising. > > a better approach: let it perform minor compactions normally, and when > it is done with that (no compaction in progress and > compactionmanager.pendingtasks == 0), then issue the major compaction > if you still want to. > I will try it. > > -- > Jonathan Ellis > Project Chair, Apache Cassandra > co-founder of Riptano, the source for professional Cassandra support > http://riptano.com > -- Best Regards Anty Rao
