Hi all,
I am facing the above issue in Cassandra 1.1.0, it will add 134.2MB
commitlog file in every restart, but it never delete it. We can't control
the commitlog dir size even
by explicitly setting commitlog_total_space_in_mb in cassandra.yaml.
I set commitlog_total_space_in_mb as 512 in
Hi all,
older Cassandra versions had to read columns from each SSTable with
positive bloom filter in order to find recent value.
This was optimized with: Improve read performance in update-intensive
workload https://issues.apache.org/jira/browse/CASSANDRA-2498
Now each SSTable has metadata -
Hi,
I finally successfully removed the ghost node using
unsafeAssassinateEndpoint() as described there :
http://tumblr.doki-pen.org/post/22654515359/assinating-cassandra-nodes,
I hope this can help more people.
Nodetool gossipinfo gives me now the following info for the ghost node :
Probably not since it is sequential writes….(ie. Seek performance is the big
hit and if it is sequential it should not be seeking and is about just as fast
as an SSD in theory). In practice, I have not measure the performance of one
vs. the other though…that I always the best way to go.(you
Hi,
Today we rebooted a node in our cluster for maintenance and after that
one of the keyspaces went missing. This is what we did leading up to
this:
nodetool drain -h localhost
reboot
restart cassandra
There was an error during startup:
ERROR [MutationStage:109] 2012-08-08 14:05:56,443
Thanks for your reply Dean,
considering your reply maybe I use a 15k RPM SCSI Disk, I think it'll
perform better than a SSD disk.
On Wed, Aug 8, 2012 at 10:01 AM, Hiller, Dean dean.hil...@nrel.gov wrote:
Probably not since it is sequential writes….(ie. Seek performance is the
big hit and
A 7.5 is probably fine and can still beat it as it is going to be the speed of
writing not seeking(and I am not sure if they spec hard drives with a write
time when not seeking….not sure). Remember that drives are rated on how fast
they spin…this disk should not be spinning a lot(in theory)…it
There is a really good presentation about SSD and Cassandra on youtube by Rick
Branson. I highly recommend watching it.
http://www.youtube.com/watch?v=zQdDi9pdf3I
Amit
On Aug 8, 2012, at 6:23 AM, Hiller, Dean wrote:
A 7.5 is probably fine and can still beat it as it is going to be the speed
Forgot to mention that the keyspace 'twitter' was created, then droppend
and re-created a couple of days ago.
How about if I create a new keyspace with the same definition and then
copy the existing tables into the proper place and call nodetool
refresh on each node. Would that work or are there
On Wednesday 08 of August 2012, Arend-Jan Wijtzes wrote:
Forgot to mention that the keyspace 'twitter' was created, then droppend
and re-created a couple of days ago.
How about if I create a new keyspace with the same definition and then
copy the existing tables into the proper place and
Great !
On Wed, Aug 8, 2012 at 11:41 AM, Amit Kumar kumaramit.ex...@gmail.comwrote:
There is a really good presentation about SSD and Cassandra on youtube by
Rick Branson. I highly recommend watching it.
http://www.youtube.com/watch?v=zQdDi9pdf3I
Amit
On Aug 8, 2012, at 6:23 AM, Hiller,
Hello,
Thanks for your replies.
DNS seems to be properly configured:
[root@beta:~] #host beta.jokefire.com
beta.jokefire.com has address 198.101.216.47
And I forgot the step to use the nodetool flush command. Taking it from the
top again:
[default@unknown] use system;
Authenticated to
On Wed, Aug 08, 2012 at 05:08:56PM +0200, Mateusz Korniak wrote:
On Wednesday 08 of August 2012, Arend-Jan Wijtzes wrote:
Forgot to mention that the keyspace 'twitter' was created, then droppend
and re-created a couple of days ago.
How about if I create a new keyspace with the same
If you have used the above commands then i guess problem lies in this step.
[default@system] set LocationInfo[utf8('L')][utf8('*Test
Cluster*')]=utf8('Jokefire
Cluster');
It should be like this: set LocationInfo[utf8('L')][utf8('Cluster
Name')]=utf8('Jokefire Cluster');
whoops! sorry about that! trying again..
[default@unknown] connect beta.jokefire.com/9160;
Connected to: Test Cluster on beta.jokefire.com/9160
[default@unknown] use system;
Authenticated to keyspace: system
[default@system] set LocationInfo[utf8('L')][utf8('Cluster
Name')]=utf8('Jokefire
Probably you can get an intel 320 160GB or a Samsung 830 for the same price as
the 146GB 15k rpm drive.
Overprovision the SSD 20% and off you go.
It will beat the HDD both sequentially and randomly.
Terje
On Aug 8, 2012, at 11:41 PM, Amit Kumar kumaramit.ex...@gmail.com wrote:
There is a
Hey Tim,
Can you repeat these steps as given below? I guess now you are missing
step no 6.
Start the Cassandra-cli connected to your node.
Run the following:
1. use system;
2. set LocationInfo[utf8('L')][utf8('ClusterName')]=utf8('Brisk
Cluster');
3. exit;
4. Run nodetool
Hi Abhijit,
Thanks and actually I did restart cassandra at the end. I suspect I will
have to delete the files in my system keyspace folder. I'm not at liberty
to do that at the moment, but I will give that shot as soon as I'm able.
Thank you again
Tim
On Wed, Aug 8, 2012 at 12:24 PM, Abhijit
I managed to delete the hints from JConsole by using HintedHadOffManager
MBean.
Thanks.
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Sent from the
Good morning,
Our application runs on a 3 node cassandra cluster with RF of 3.
We use quorum operations against this cluster in hopes of garunteeing
consistency.
One scenario in which an issue can occur here is:
Out of our 3 nodes, only 2 are up.
We perform a write to say, a new key.
The down
Hi Tim,
I had a similar problem and I sorted it out in the following manner.
The cluster name is stored in two places. In he cassandra.yaml and the
system keyspace. Everytime you start a node it checks the cluster name
in both these places. If changes in the configuration files is not
working
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