Am 07.03.2011 02:10, schrieb Tyler Hobbs:
You want to add an index on a CF with TimeUUIDType column names? I
think you've probably mistaken the purpose of compare_with.
If you haven't, I think you'll need to add the index programmatically
in order to specify a non ascii/unicode column name for
2011/3/6 aaron morton aa...@thelastpickle.com
Your node is under memory pressure, after the GC there is still 5.7GB in
use. In fact it looks like memory usage went up during the GC process.
Can you reduce the memtable size, caches or the number of CF's or increase
the JVM size? Also is this
Hi all,
I am trying to build Cassandra source(0.7.3) with eclipse helios, followed
instruction given in the link
http://wiki.apache.org/cassandra/RunningCassandraInEclipse
thought I have followed complete instruction it is still showing errors that
could not resolve class.(though it is in
Following the instructions should give you an error free build and setup
the project in eclipse.
Otherwise, try something as follows:
Once the project is checked-out, try running just the following ant targets
and once the project has been stably built then choose required targets:
*clean,
On 03/05/2011 05:27 PM, Paul Pak wrote:
Hello all,
I was wondering if people could share their overall experiences with
using .7 series of Cassandra in production? Is anyone using it?
For what it's worth we are using a dozen node 0.7.x cluster have not had
any major problems (our uses
On 03/04/2011 03:51 PM, Casey Deccio wrote:
Are you saying: that you want a smaller heap and what settings to change
to accommodate that, or that you have already set a small heap of x and
Cassandra is using significantly more than that?
Based on my observation above, the latter.
Casey
Thanks for the response, I haven't checked on the status of phpcassa in a while
but does it now work with 0.7?
That was one of the main reasons I switched to pandra, it seemed more up to date
From: Tyler Hobbs
Sent: Monday, March 07, 2011 2:40 AM
To: user@cassandra.apache.org
Subject: Re:
phpcassa: https://github.com/thobbs/phpcassa is maintained and works well
...
-sd
On Mon, Mar 7, 2011 at 4:22 PM, Courtney e-mailadr...@hotmail.com wrote:
Thanks for the response, I haven't checked on the status of phpcassa in a
while but does it now work with 0.7?
That was one of the
just updated and after doing a scrub we see exceptions.
ERROR [CompactionExecutor:1] 2011-03-07 15:46:53,811
AbstractCassandraDaemon.java (line 114) Fatal exception in thread
Thread[CompactionExecutor:1,1,main]
java.io.IOError: java.io.EOFException
at
Hello,
On 03/06/2011 06:35 PM, Aditya Narayan wrote:
Next, I also need to store the blogComments which I am planning to
store all, in another single row. 1 comment per column. Thus the
entire information about the a single comment like commentBody,
commentor would be serialized(using google
Hello,
I was wondering whether Secondary Index is consistent with its base table?
How did you guarantee the consistency?
Thanks
Alvin
Artifacts should be in the Maven Central Repository by now
-Stephen
On 4 March 2011 21:52, Eric Evans eev...@rackspace.com wrote:
It's only been a couple of weeks since the last release, but a rather
nasty bug (some details here[1]) has since been fixed, and it seemed
best to get that out
Where do must people install Cassandra to? /var or /opt?
Thanks
Yes, this is guaranteed the same way single-row updates are guaranteed
to be atomic (the commitlog).
On Mon, Mar 7, 2011 at 10:13 AM, Alvin UW alvi...@gmail.com wrote:
Hello,
I was wondering whether Secondary Index is consistent with its base table?
How did you guarantee the consistency?
It does, but this is an implementation detail subject to change (e.g.,
the bitmap indexes being added do not).
On Mon, Mar 7, 2011 at 10:55 AM, Alvin UW alvi...@gmail.com wrote:
Thanks.
Does Cassandra store secondary index with an extra CF?
2011/3/7 Jonathan Ellis jbel...@gmail.com
Yes,
Hi all
we're still on 0.6 and are facing problems with repairs.
I.e. a repair for one CF takes around 60h and we have to do that twice (RF=3, 5
nodes). During that time the cluster is under pretty heavy IO load. It kinda
works but during peek times we see lots of dropped messages (including
On Sun, Mar 6, 2011 at 1:39 PM, Mimi Aluminium mimi.alumin...@gmail.com wrote:
Are you familiar with Cassandra cluster that is installed in datacenters
that are spread across the WAN? can you comment on the perfromance of such
installation?
What is the largest size of of such a cluster you are
During a recent upgrade of our cassandra ring from 0.6.8 to 0.7.3 and
prior to a drain on the 0.6.8 nodes, we lost a node for reasons
unrelated to cassandra. We decided to push forward with the drain on
the remaining healthy nodes. The upgrade completed successfully for
the remaining nodes and the
When you say decent latency and throughput what numbers do you consider decent?
I know throughput would be highly dependent on the quantity of kb shoved
through the pipe so I would expect throughput needs would be highly dependent
on the data actually in cassandra.
Thanks for the info, I am
The DataStax packaged
releaseshttp://www.datastax.com/docs/0.7/configuration/packaged_releasesfollow
standard practices for Linux-ish installation, so they might be a
good model to follow. For instance, the RHEL/CentOS package installs the
binaries (cassandra-cli, nodetool) in /usr/bin,
hi there,
is there an easy way to 'un-mess' things when the ip of a server is changed?
updating the cassandra.yaml didn't help. when the member with the changed
ip comes up, it's fine ... but other members in the ring don't see it and
keep the old ip address regardless of the yaml changing
Hello,
I'm doing some testing of Cassandra and I've read a lot about people
running into situations growing their clusters. So, I'm about to test
it with .7.3. I've got a test node which is a single node with a
replication factor of 1. I'd like to grow it to 3 nodes and a
replication factor of
It's always possible to run out of memory. Can you provide...
- number cf's and their Memtable settings
- any row or key cache settings
- any other buffer or memory settings you may have changed in Cassandra.yaml.
- what load you are putting on the cluster, e.g. Inserting x rows/columns per
Thanks Jonathan.
Filed: https://issues.apache.org/jira/browse/CASSANDRA-2283
We'll start the scrub during our normal compaction cycle and update
this thread and the bug with the results.
-erik
On Mon, Mar 7, 2011 at 11:27 AM, Jonathan Ellis jbel...@gmail.com wrote:
It sounds like it doesn't
You can fill your boots.
So long as your boots have a capacity of 2 billion.
Background ...
http://wiki.apache.org/cassandra/LargeDataSetConsiderations
http://wiki.apache.org/cassandra/CassandraLimitations
It sounds like you're complaining that the JVM sometimes does stop-the-world GC.
You can mitigate this but not (for most workloads) eliminate it with
GC option tuning. That's simply the state of the art for Java garbage
collection right now.
On Sun, Mar 6, 2011 at 2:18 AM, ruslan usifov
2011/3/8 Jonathan Ellis jbel...@gmail.com
It sounds like you're complaining that the JVM sometimes does
stop-the-world GC.
You can mitigate this but not (for most workloads) eliminate it with
GC option tuning. That's simply the state of the art for Java garbage
collection right now.
Hm,
So, are you saying this is normal and expected from Cassandra? So,
under load, we can expect java garbage collection to stop the Cassandra
process on that server from time to time, essentially taking out the
node for short periods of time while it does garbage collection?
Also, why is there so
Hi Ruslan,
It looks like Jonathan and Stu have already been working to reduce
garbage collection on v.8 The ticket is at
https://issues.apache.org/jira/browse/CASSANDRA-2252
Jonathan, is there any way to apply the patch to .73 and have ruslan
test it to see if it fixes his issue with Garbage
Can you tell me how many SSTables on disk when you see GC pauses? In your 3
node cluster, what's the RF factor?
On Mon, Mar 7, 2011 at 1:50 PM, ruslan usifov ruslan.usi...@gmail.comwrote:
2011/3/8 Jonathan Ellis jbel...@gmail.com
It sounds like you're complaining that the JVM sometimes does
Will answer on the user list.
Aaron
On 8/03/2011, at 1:11 AM, Baskar wrote:
Does Cassandra allow nesting of column families?
Here is the use case
- we need to store calls made by employees
- employees are associated with an account
- accounts have phone numbers
- many calls are made by
2011/3/8 Chris Goffinet c...@chrisgoffinet.com
Can you tell me how many SSTables on disk when you see GC pauses? In your 3
node cluster, what's the RF factor?
About 30-40, and i use RF=2, and insert rows with QUORUM consistency level
The rows you are inserting, what is your update ratio to those rows?
On Mon, Mar 7, 2011 at 4:03 PM, ruslan usifov ruslan.usi...@gmail.comwrote:
2011/3/8 Chris Goffinet c...@chrisgoffinet.com
Can you tell me how many SSTables on disk when you see GC pauses? In your 3
node cluster, what's
No to nesting CF's.
When creating the data model, it's best to think about how you need to read the
data. Denormalise and group data to work towards getting all the data you need
by reading one or more rows from the same CF. This is not a hard rule, just a
guideline I use.
Without knowing
2011/3/8 Chris Goffinet c...@chrisgoffinet.com
The rows you are inserting, what is your update ratio to those rows?
I doesn't update them only insert, with speed 16000 per second
It's failing because when the node bootstraps it does not know about enough
nodes to support the RF...
replication factor (3) exceeds number of
endpoints (2)
I *think* the normal work around is to disable autobootstrap, bring the nodes
up then run nodetool join or StorageService.joinRing()
Hi all,
When I drop a column family, it creates a snapshot. When does the snapshot go
away and free up the disk space? I was able to run nodetool clearsnapshot to
get rid of them, but will they go away themselves? (Also, is there a purpose to
keeping a snapshot around?)
-Jeffrey
How large are your SSTables on disk? My thought was because you have so many
on disk, we have to store the bloom filter + every 128 keys from index in
memory.
On Mon, Mar 7, 2011 at 4:35 PM, ruslan usifov ruslan.usi...@gmail.comwrote:
2011/3/8 Chris Goffinet c...@chrisgoffinet.com
The rows
Not this fits your problem, but if you pass -Dcassandra.load_ring_state=false
as a JVM option it will stop the node from loading the saved endpoints. It
should then rediscover them via gossip.
It sounds like you've changed a seed ip is that correct? Not sure there are any
other implications
1) yes
2) um, not sure. The nodetool output below looks like there are only 2 nodes in
that cluster, i.e. there are no down nodes.
Aaron
On 8/03/2011, at 2:11 PM, mcasandra wrote:
aaron morton wrote:
It's failing because when the node bootstraps it does not know about
enough nodes to
aaron morton wrote:
2) um, not sure. The nodetool output below looks like there are only 2
nodes in that cluster, i.e. there are no down nodes.
There are actually 3 nodes. Not sure why it's not showing the other node in
the output which is currently down. The error I am getting is from the
Hi Jonathan Ellis
Thank you for your advice.
It was useful for me but I have still other problem.
Now Cassandra 0.6.12 is working.
So I installed Thrift 0.7.2 for PHP interface.
Then I tried an example program from Cassandra Wiki ThriftExamples.
However fread or fwrite in TSocket.php doesn't
My application displays list of several blogs' overview data (like
blogTitle/ nameOfBlogger/ shortDescrption for each blog) on 1st page (in
very much similar manner like Digg's newsfeed) and when the user selects a
particular blog to see., the application takes him to that specific blog's
full
43 matches
Mail list logo
