mcasandra gmail.com> writes:
>
> Thanks! I think it still is a good idea to enable HiugePages and use
> UseLargePageSize option in JVM. What do you think?
I experimented with it. It was about 10% performance improvement. But this was
on 100% row cache hit. On smaller cache hit ratios the perfor
There is a test target in the build script.
Aron
On 15 Mar 2011, at 17:29, Jeffrey Wang wrote:
> Hey all,
>
> We’re applying some patches to our own branch of Cassandra, and we are
> wondering if there is a good way to run all the unit tests. Just having JUnit
> run all the test classes see
On Mon, Mar 14, 2011 at 8:17 PM, Karl Hiramoto wrote:
> On 03/14/11 15:33, Sylvain Lebresne wrote:
>>
>> CASSANDRA-1537 is probably also a partial but possibly sufficient
>> solution. That's also probably easier than CASSANDRA-1610 and I'll try
>> to give it a shot asap, that had been on my todo l
Hi -
I have a question. Obviously there is no purpose in running
OldNetworkTopologyStrategy in one data center. However, we want to
share the same configuration in our production (multiple data centers)
and pre-production (one data center) environments.
My question is will
org.apache.cassandra.
Actually its not the column values that should be UUIDs in our case, but the
column keys. The CF uses TimeUUID ordering and the values are just some
ByteArrays. Even with changing the code to use UUIDSerializer instead of
serializing the UUIDs manually the issue still exists.
As far as I can se
One additionnal question, I don't really understand what is in the key
cache. I have a column family with only one key, and the keycache size
is 118 ... ?
Any idea.
Thks.
Jean-Yves
Hello
I have follow task. I want to move token from one node to another how can i
do that?
Hi,
I'm did break my test cluster again. It's really strange. I use
cassandra 0.7.3. This is what I did:
- install node1
- install node2, auto_bootstrap: true
- install node3, auto_bootstrap: true
- created a keyspace with RF 1, populate with data
- create a keyspace with RF 3, populate with dat
Hi Ruslan,
nodetool -h move
-sd
On Tue, Mar 15, 2011 at 11:23 AM, ruslan usifov wrote:
> Hello
>
> I have follow task. I want to move token from one node to another how can i
> do that?
Hi all
strange things here: we are using jna. Log file says mlockall was successful.
We start with -Xms2000M -Xmx2000M and run cassandra as root process so
RLIMIT_MEMLOCK limit should have no relevance. Still cassandra is swapping ...
Used swap varies between 100MB - 800MB
We removed the swap
Yes.
On Tue, Mar 15, 2011 at 4:29 AM, Jonathan Colby
wrote:
> Hi -
>
> I have a question. Obviously there is no purpose in running
> OldNetworkTopologyStrategy in one data center. However, we want to
> share the same configuration in our production (multiple data centers)
> and pre-production (
Hot on the heals of 0.7.3, I'm pleased to announce 0.7.4, with bugs
fixed, optimizations made, and features added[1].
Upgrading from 0.7.3 is a snap, but if you're upgrading from an earlier
version, do pay special attention to the release notes[2].
If you spot any problems, let us know[3], and i
According to the Cassandra Wiki and OReilly book supposedly there is a
"contrib" directory within the cassandra download containing the
Python Stress Test script stress.py. It's not in the binary tarball
of 0.7.3.
Anyone know where to find it?
Anyone know of other, maybe better stress testing sc
the contrib folder is in the source tarball ...
On Tue, Mar 15, 2011 at 5:23 PM, Jonathan Colby
wrote:
> According to the Cassandra Wiki and OReilly book supposedly there is a
> "contrib" directory within the cassandra download containing the
> Python Stress Test script stress.py. It's not in th
contrib is only in the source download of cassandra
On Mar 15, 2011, at 11:23 AM, Jonathan Colby wrote:
> According to the Cassandra Wiki and OReilly book supposedly there is a
> "contrib" directory within the cassandra download containing the
> Python Stress Test script stress.py. It's not in t
Hi,
We have a cluster with 12 servers and use RF=3. When running nodetool
repair, do we have to run it on all nodes on the cluster or can we run on
every 3rd node? Thanks!
Huy
--
Huy Le
Spring Partners, Inc.
http://springpadit.com
At least if you are using RackUnawareStrategy
Cheers,
Daniel
On Mar 15, 2011, at 6:44 PM, Huy Le wrote:
> Hi,
>
> We have a cluster with 12 servers and use RF=3. When running nodetool
> repair, do we have to run it on all nodes on the cluster or can we run on
> every 3rd node? Thanks!
>
>
> One additionnal question, I don't really understand what is in the key
> cache. I have a column family with only one key, and the keycache size
> is 118 ... ?
The key cache is basically a hash table mapping row keys to sstable
offsets. It avoids the need to read from the index portion of the
sst
Awesome, thanks. I'm seeing some weird errors due to deleting commit logs,
though (I'm running on Windows, which might have something to do with it):
[junit] java.io.IOException: Failed to delete C:\Documents and
Settings\jwang\workspace-cass\Cassandra\Cassandra-0.7.0\build\test\cassandra\co
Sorry about the delay,
> I do believe there is a fundamental issue with compactions allocating too
> much memory and incurring too many garbage collections (at least with 0.6.12).
[snip a lot of good info]
You certainly seem to have a real issue, though I don't get the feel
it's the same as the
2011/3/15 Sasha Dolgy
> Hi Ruslan,
>
> nodetool -h move
>
>
And how add node to cluster without token?
> And how add node to cluster without token?
You must always have a token. You can bootstrap a node into the
cluster and have it auto-select a token by leaving the initial_token
setting empty, but that only makes sense if you want the new node to
evenly split the largest current range.
I think th
Are you still trying to run tests manually? You need to enable
junit's flag for running each test class in a separate JVM.
On Tue, Mar 15, 2011 at 1:44 PM, Jeffrey Wang wrote:
> Awesome, thanks. I’m seeing some weird errors due to deleting commit logs,
> though (I’m running on Windows, which mig
AFAIK you should run it on every node.
http://wiki.apache.org/cassandra/Operations#Repairing_missing_or_inconsistent_data
Aaron
On 16 Mar 2011, at 06:58, Daniel Doubleday wrote:
> At least if you are using RackUnawareStrategy
>
> Cheers,
> Daniel
>
> On Mar 15, 2011, at 6:44 PM, Huy Le wrote:
Hey guys,
Have started facing a crash in my cassandra while reading. Here are the
details.
1. single node. replication factor of 1
2. Cassandra version 0.7.3
3. Single keyspace. 5 column families.
4. No super columns
5. My data model is a little bit skewed. It results in having several small
rows a
Still not seeing 0.7.4 as a download option on the main site?
On 3/15/11 9:20 AM, Eric Evans wrote:
Hot on the heals of 0.7.3, I'm pleased to announce 0.7.4, with bugs
fixed, optimizations made, and features added[1].
Upgrading from 0.7.3 is a snap, but if you're upgrading from an earlier
versi
right, every 3rd node is adequate w/ RUS/SimpleStrategy since each
node repairs all the ranges it has replicated to it.
On Tue, Mar 15, 2011 at 12:58 PM, Daniel Doubleday
wrote:
> At least if you are using RackUnawareStrategy
> Cheers,
> Daniel
> On Mar 15, 2011, at 6:44 PM, Huy Le wrote:
>
> Hi,
Did you upgrade from an earlier version? Did you read NEWS.txt?
On Tue, Mar 15, 2011 at 4:21 PM, Sanjeev Kulkarni wrote:
> Hey guys,
> Have started facing a crash in my cassandra while reading. Here are the
> details.
> 1. single node. replication factor of 1
> 2. Cassandra version 0.7.3
> 3. Si
On Tue, Mar 15, 2011 at 4:26 PM, Mark wrote:
> Still not seeing 0.7.4 as a download option on the main site?
Artifacts are probably still syncing, try
http://www.apache.org/dyn/closer.cgi?path=/cassandra/0.7.4/apache-cassandra-0.7.4-bin.tar.gz
until
one of them works.
-Brandon
Sorry for the rather primitive question, but it's not clear to me if I need
to fetch the whole row, add a column as a dictionary entry and re-insert it
if I want to expand the row by one column. Help will be appreciated.
--
View this message in context:
http://cassandra-user-incubator-apache-org
That is from the wiki http://wiki.apache.org/cassandra/StorageConfiguration
http://wiki.apache.org/cassandra/StorageConfiguration
--
View this message in context:
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Seed-tp6162837p6174450.html
Sent from the cassandra-u...@incubator.
On Tue, Mar 15, 2011 at 5:46 PM, buddhasystem wrote:
> Sorry for the rather primitive question, but it's not clear to me if I need
> to fetch the whole row, add a column as a dictionary entry and re-insert it
> if I want to expand the row by one column. Help will be appreciated.
>
>
> --
> View th
Thanks. Can you give me a pycassa example, if possible?
Thanks!
--
View this message in context:
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Sent from the cassandra-u...@incubator.apache.org mailing list ar
Hey Jonathan,
Thanks for the reply.
I was earlier running 0.7.2 and upgraded it to 0.7.3. Looks like I had to
run the nodetool scrub command to sanitize the sstables because of the
bloomfilter bug. I did that and the Assert error went away but I'm getting
Java Heap Space Out of Memory error. I agai
Hi there,
I am trying to understand the underlying architecture of cassandra.
How does one node communicate with other node? Does cassandra use
Thrift or JMX to communicate with other node?
Kind regards,
Joshua.
--
http://twitter.com/jpartogi
The internode messages are custom binary format. In the code it's in the
o.a.c.net package, the Message class is the thing sent around. MessageService
is the main guy handling incoming and outgoing messages.
The node listens on the storage_port and listen_address as set in
conf/cassandra.yaml
I am assuming it is the seed node that tells who are the other member in the
cluster. And then does the new node joining the cluster send "join" message
(something like that) to other nodes or is there a master coordinator (like
jboss cluster) that tells other nodes that new node has joined?
--
Vi
[moving to user list]
the things we used to expose as strings now have proper data types and
their own methods, e.g. describe_cluster_name, describe_version, etc.
On Tue, Mar 15, 2011 at 8:40 PM, Anurag Gujral wrote:
> Hi All,
> I am working on porting my cassandra application to work
On Tue, Mar 15, 2011 at 5:45 PM, mcasandra wrote:
> I am assuming it is the seed node that tells who are the other member in the
> cluster. And then does the new node joining the cluster send "join" message
> (something like that) to other nodes or is there a master coordinator (like
> jboss clust
I would scrub again w/ 0.7.4.
On Tue, Mar 15, 2011 at 6:38 PM, Sanjeev Kulkarni wrote:
> Hey Jonathan,
> Thanks for the reply.
> I was earlier running 0.7.2 and upgraded it to 0.7.3. Looks like I had to
> run the nodetool scrub command to sanitize the sstables because of the
> bloomfilter bug. I
On Tue, 2011-03-15 at 14:26 -0700, Mark wrote:
> Still not seeing 0.7.4 as a download option on the main site?
Something about the site's pubsub isn't working; I'll contact INFRA.
--
Eric Evans
eev...@rackspace.com
On Tue, 2011-03-15 at 22:19 -0500, Eric Evans wrote:
> On Tue, 2011-03-15 at 14:26 -0700, Mark wrote:
> > Still not seeing 0.7.4 as a download option on the main site?
>
> Something about the site's pubsub isn't working; I'll contact INFRA.
https://issues.apache.org/jira/browse/INFRA-3520
--
Er
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