Dne 14.12.2011 1:15, Maxim Potekhin napsal(a):
Thanks. It could be hidden from a human operator, I suppose :)
I agree. Open JIRA for it.
Dne 11.11.2011 7:55, Radim Kolar napsal(a):
i have problem with large CF (about 200 billions entries per node).
While i can configure index_interval to lower memory requirements, i
still have to stick with huge bloom filters.
Ideal would be to have bloom filters configurable like in hbase.
Anyone?
On 12 December 2011 15:25, Bart Swedrowski b...@timedout.org wrote:
Hello everyone,
I seem to have came across rather weird (at least for me!) problem /
behaviour with Cassandra.
I am running a 4-nodes cluster on Cassandra 0.8.7. For the keyspace in
question, I have RF=3,
Hi all,
I'm using Cassandra in production for a small social network (~10.000 people).
Now I have to assign some credits to each user operation (login, write post
and so on) and then beeing capable of providing in each moment the top 10 of
the most active users. I'm on Cassandra 0.7.6 I'd like
Do you use randompartitiner? What nodetool getendpoints show for several random
keys?
-Original Message-
From: Bart Swedrowski b...@timedout.org
To: user@cassandra.apache.org
Sent: Wed, 14 Dec 2011 12:56
Subject: Re: One ColumnFamily places data on only 3 out of 4 nodes
Anyone?
On 12
On 14 December 2011 13:02, i...@4friends.od.ua wrote:
Do you use randompartitiner? What nodetool getendpoints show for several
random keys
Yes, randompartitioner it is.
Thanks for hint re 'nodetool getendpoints'. I have queried few, and to my
surprise, 192.168.82.2 (node1) is showing up as a
On 14 December 2011 14:45, Bart Swedrowski b...@timedout.org wrote:
I have queried few, and to my surprise, 192.168.82.2 (node1)
The IP is supposed to be 192.168.81.2
No idea, try to check logs for errors, and increase verbosity level on that
node.
-Original Message-
From: Bart Swedrowski b...@timedout.org
To: user@cassandra.apache.org
Sent: Wed, 14 Dec 2011 16:45
Subject: Re: One ColumnFamily places data on only 3 out of 4 nodes
On 14 December
On 14 December 2011 14:58, i...@4friends.od.ua wrote:
No idea, try to check logs for errors, and increase verbosity level on
that node.
No errors at all, few warnings about HEAP size, that's it.
Okay, thanks.
Anyone else have got any ideas on how to push this forward?
Hello,
I am trying to integrate some Cassandra related ops ( insert, get, etc ) into
an application written entirelly in C, so C++ is not an option.
Is there any C client library for cassandra ?
I have also tried to generate thrift glibc code for Cassandra, but on
Try libcassandra, but it doesn't support connection pooling
--Original Message--
From: Vlad Paiu
To: user@cassandra.apache.org
ReplyTo: user@cassandra.apache.org
Subject: Cassandra C client implementation
Sent: Dec 14, 2011 11:11 PM
Hello,
I am trying to integrate some Cassandra related
BTW please use
https://github.com/eyealike/libcassandra
Best Regards,
Yi Steve Yang
~~~
+1-401-441-5086
+86-13910771510
Sent via BlackBerry® from China Mobile
-Original Message-
From: i...@iyyang.com
Date: Wed, 14 Dec 2011 15:52:56
To: user@cassandra.apache.org
Reply-To:
Hi everybody.
I'm using a lot of counters to make statistics on a 4 nodes cluster (ec2
m1.small) with phpcassa (cassandra v1.0.2).
I store some events and increment counters at the same time.
Counters give me over-counts compared with the count of every corresponding
events.
I sure that my
http://wiki.apache.org/cassandra/FAQ#range_ghosts
On Wed, Dec 14, 2011 at 4:36 AM, Radim Kolar h...@sendmail.cz wrote:
Dne 14.12.2011 1:15, Maxim Potekhin napsal(a):
Thanks. It could be hidden from a human operator, I suppose :)
I agree. Open JIRA for it.
https://issues.apache.org/jira/browse/CASSANDRA-3497
On Wed, Dec 14, 2011 at 4:52 AM, Radim Kolar h...@sendmail.cz wrote:
Dne 11.11.2011 7:55, Radim Kolar napsal(a):
i have problem with large CF (about 200 billions entries per node). While
i can configure index_interval to lower memory
Hello,
Thanks for your answer.
Unfortunately libcassandra is C++ , I'm looking for something written in ANSI C.
I've searched alot and my guess is glibc thrift is my only option, but I could
not find even one example onto how to make a connection some queries to
Cassandra using glibc thrift.
Alexandru, Jeremiah --
what setting needs to be tweaked, and what's the recommended value?
I observed similar behavior this morning.
Maxim
On 11/28/2011 2:53 PM, Jeremiah Jordan wrote:
Yes, the low volume memtables are causing the problem. Lower the
thresholds for those tables if you don't
Thanks, it makes perfect sense now. Well an option in cassandra could
make it optional
as far as display it concerned, w/o performance hit -- of course this is
all unimportant.
Thanks again
Maxim
On 12/14/2011 11:30 AM, Brandon Williams wrote:
VIrgil apparently lets you access cassandra via a RESTful interface:
http://code.google.com/a/apache-extras.org/p/virgil/
Depending on your performance needs and the maturity of virgil's code (I think
it's alpha), that may work.
You could always fork a java process and pipe to it.
Don
If you are OK linking to a C++ based library you can look at:
https://github.com/minaguib/libcassandra/tree/kickstart-libcassie-0.7/libcassie
It is wrapper code around libcassandra which exports a C++ interface.
If you look at the function names etc in the other languages, just use
the similar
The Cassandra team is pleased to announce the release of Apache Cassandra
version 1.0.6.
Cassandra is a highly scalable second-generation distributed database,
bringing together Dynamo's fully distributed design and Bigtable's
ColumnFamily-based data model. You can read more here:
bart@node1:~$ nodetool -h localhost getendpoints A UserDetails 4545027
192.168.81.5
192.168.81.2
192.168.81.3
Can you see what happens if you stop C* say on node .5 and write and
read at quorum?
On Wed, Dec 14, 2011 at 7:06 AM, Bart Swedrowski b...@timedout.org wrote:
On 14 December 2011
Hello,
Thanks very much for your suggestions.
Libcassie seems nice but doesn't seem like it's actively maintained and i'm not
sure if it's compatible with latest Cassandra versions. Will give it a try
though.
I was looking through the generated thrift .c files and I can't seem to find
what
Correct. 1.0.6 fixes this for me.
/Janne
On 12 Dec 2011, at 02:57, Chris Burroughs wrote:
Sounds like https://issues.apache.org/jira/browse/CASSANDRA-3558 and the
other tickets reference there.
On 11/28/2011 05:05 AM, Janne Jalkanen wrote:
Hi!
(Asked this on IRC too, but didn't get
The Cassandra team is pleased to announce the release of Apache Cassandra
version 0.8.9.
Cassandra is a highly scalable second-generation distributed database,
bringing together Dynamo's fully distributed design and Bigtable's
ColumnFamily-based data model. You can read more here:
What could be the reason I see unequal loads on a 3-node cluster?
This all started happening during repairs (which again are not going
smoothly).
Maxim
Hello
I ran repair like this:
nohup repair.sh
where repair.sh contains simply nodetool repair plus timestamp.
The process dies while dumping this:
Exception in thread main java.io.IOException: Repair command #1: some
repair session(s) failed (see log for details).
at
Hi,
Just tried libcassie and seems it's not compatible with latest cassandra, as
even simple inserts and fetches fail with InvalidRequestException...
So can anybody please provide a very simple example in C for connecting
fetching columns with thrift ?
Regards,
Vlad
Vlad Paiu
On 12/14/2011 04:18 PM, Vlad Paiu wrote:
Hi,
Just tried libcassie and seems it's not compatible with latest cassandra, as
even simple inserts and fetches fail with InvalidRequestException...
So can anybody please provide a very simple example in C for connecting
fetching columns with thrift
Hello Eric,
We have that, thanks alot for the contribution.
The idea is to not play around with including C++ code in a C app, if there's
an alternative ( the thrift g_libc ).
Unfortunately, since thrift does not generate a skeleton for the glibc code, I
don't know how to find out what the API
Exception in thread main java.io.IOException: Repair command #1: some
repair session(s) failed (see log for details).
For why repair failed you unfortunately need to log at logs as it suggests.
I still see pending tasks in nodetool compactionstats, and their number goes
into hundreds which I
Hi Vlad
I'm the author of libcassie.
For what it's worth, it's in production where I work, consuming a heavily-used
cassandra 0.7.9 cluster.
We do have plans to upgrade the cluster to 1.x, to benefit from all the
improvements, CQL, etc... but that includes revising all our clients (across
We are using leveled compaction running cassandra 1.0.6. I checked
the data directory (/var/lib/cassandra/data) and i see these 0 bytes
tmp files.
What are these files?
thanks
Ramesh
-rw-r--r-- 1 root root0 Dec 14 17:15 uid-tmp-hc-106-Data.db
-rw-r--r-- 1 root root0 Dec 14
I'm seeing this also, and my nodes have started crashing with too many open
file errors. Running lsof I see lots of these open tmp files.
java 8185 root 911u REG 8,32 38
129108266
I now have a CF with extremely skinny rows (in the current implementation),
and the application will want to query by more than one column values.
Problem is that the values in a lot of cases will be high cardinality.
One other factor is that I want to rotate data in and our of the system
in one
yep, so far it looks like a file descriptor leak. Not sure if gc or
some other event like compaction would close these files..
[root@CAP-VM-1 ~]# ls -al /proc/31134/fd | grep MSA | wc -l
540
[root@CAP-VM-1 ~]# ls -al /proc/31134/fd | grep MSA | wc -l
542
[root@CAP-VM-1 ~]# ls -al
36 matches
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