Re: OpsCenter_rollups*

2014-08-25 Thread Robert Coli
On Mon, Aug 25, 2014 at 1:42 PM, Ruchir Jha wrote: > I see a lot of activity around the OpsCenter_rollups CFs in the logs. Why > is there so much OpsCenter work happening? Is there a way to disable it, > and whats the impact? > Opscenter is tracking the metrics for your cluster and storing the t

Re:

2014-08-25 Thread Robert Coli
On Mon, Aug 25, 2014 at 2:16 PM, Sávio S. Teles de Oliveira < savio.te...@cuia.com.br> wrote: > RF=1 and CF=ONE. > With RF=1 and CL=ONE, I do not personally understand a scenario in which a read at T2 reads an item which was deleted at T1. If you have a trivial repro case, I suggest filing a JIR

Re:

2014-08-25 Thread Sávio S . Teles de Oliveira
RF=1 and CF=ONE. The clocks were sync. It was my first assumption. 2014-08-25 17:36 GMT-03:00 Jonathan Haddad : > This is actually a more correct response than mine, I made a few > assumptions that may or may not be true. > > On Mon, Aug 25, 2014 at 1:31 PM, Robert Coli wrote: > > On Mon, Aug

OpsCenter_rollups*

2014-08-25 Thread Ruchir Jha
Hi, I see a lot of activity around the OpsCenter_rollups CFs in the logs. Why is there so much OpsCenter work happening? Is there a way to disable it, and whats the impact? Ruchir.

Re:

2014-08-25 Thread Jonathan Haddad
This is actually a more correct response than mine, I made a few assumptions that may or may not be true. On Mon, Aug 25, 2014 at 1:31 PM, Robert Coli wrote: > On Mon, Aug 25, 2014 at 1:25 PM, Sávio S. Teles de Oliveira > wrote: >> >> We're using cassandra 2.0.9 with datastax java cassandra driv

Re:

2014-08-25 Thread Jonathan Haddad
It sounds like your clocks are out of sync. Run ntpdate to fix your clock & then make sure you're running ntpd on every machine. On Mon, Aug 25, 2014 at 1:25 PM, Sávio S. Teles de Oliveira wrote: > We're using cassandra 2.0.9 with datastax java cassandra driver 2.0.0 in a > cluster of eight node

Re:

2014-08-25 Thread Robert Coli
On Mon, Aug 25, 2014 at 1:25 PM, Sávio S. Teles de Oliveira < savio.te...@cuia.com.br> wrote: > We're using cassandra 2.0.9 with datastax java cassandra driver 2.0.0 in a > cluster of eight nodes. > > We're doing an insert and after a delete like: > > delete from *column_family_name* where *id* =

[no subject]

2014-08-25 Thread Sávio S . Teles de Oliveira
We're using cassandra 2.0.9 with datastax java cassandra driver 2.0.0 in a cluster of eight nodes. We're doing an insert and after a delete like: delete from *column_family_name* where *id* = value Immediatly select to check whether the DELETE was successful. Sometimes the value still there!!

Re: How to free disk space after decreasing replication factor?

2014-08-25 Thread Robert Coli
On Sat, Aug 23, 2014 at 8:20 PM, Yatong Zhang wrote: > I am using leveled compaction and I changed the replication factor from 3 > to 2, but after a few days the disk space weren't freed. I tried to trigger > the compaction or clean up, but looks like it didn't take any effect. > nodetool clean

[RELEASE] Apache Cassandra 2.0.10 released

2014-08-25 Thread Sylvain Lebresne
The Cassandra team is pleased to announce the release of Apache Cassandra version 2.0.10. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source a

Re: Replacing a dead node in Cassandra 2.0.8

2014-08-25 Thread tsi
I read some additional threads concerning outdated snapshots and deleted data so if the VM snapshot is older than gc_grace_seconds I suppose that data deleted meanwhile for which the tombstones have been removed would come back to life again if I just restore the VM from a snapshot being older tha