did you look at compaction activity?
On Mon, Jul 12, 2010 at 9:31 AM, Olivier Rosello wrote:
>> > But in Cassandra output log :
>> > r...@cassandra-2:~# tail -f /var/log/cassandra/output.log
>> > INFO 15:32:05,390 GC for ConcurrentMarkSweep: 1359 ms, 4295787600
>> reclaimed leaving 1684169392 u
> > But in Cassandra output log :
> > r...@cassandra-2:~# tail -f /var/log/cassandra/output.log
> > INFO 15:32:05,390 GC for ConcurrentMarkSweep: 1359 ms, 4295787600
> reclaimed leaving 1684169392 used; max is 6563430400
> > INFO 15:32:09,875 GC for ConcurrentMarkSweep: 1363 ms, 4296991416
> rec
> But in Cassandra output log :
> r...@cassandra-2:~# tail -f /var/log/cassandra/output.log
> INFO 15:32:05,390 GC for ConcurrentMarkSweep: 1359 ms, 4295787600 reclaimed
> leaving 1684169392 used; max is 6563430400
> INFO 15:32:09,875 GC for ConcurrentMarkSweep: 1363 ms, 4296991416 reclaimed
>
0 0 0
HINTED-HANDOFF-POOL 143 59
Thank you for your help,
Olivier
- "Peter Schuller" a écrit :
> De: "Peter Schuller"
> À: user@cassandra.apache.org
> Envoyé: Mercredi 7 Juillet 2010 18:17:19
> Objet: Re:
Hi
If the reason for this happening is compaction,
changing the priority of the compaction thread might be effective.
(cassandra0.6.3 offers this function)
see also 0.6.3 changelog
2010/7/7 Olivier Rosello
> Hi,
>
> We are testing Cassandra here, we would like to use it to store some data :
>
> It runs correctly during several days. Last night, we started to have timeout
> exception on insert and high cpu load on all nodes.
>
> We stopped inserts. But the CPU remains high (without any insert or read).
Has data been written to the cluster faster than background compaction
is proceeding
Hi,
We are testing Cassandra here, we would like to use it to store some data :
- about 1000 inserts / seconds in a CF "RAW" :
Column : TimeUUID (timeuuid of the insert, so 1000 new columns / second)
Row : MMDDHH of the insert (to minimize the size of rows, the biggest
one is 2GB data),
