ok, found past discussions:
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/cassandra-server-disk-full-td6560725.html
On Thu, Sep 8, 2011 at 11:00 PM, Yang wrote:
> I found the reason of my server freeze:
>
> COMMIT-LOG-WRITER thread is gone, dead, so the blocking queue in
> Per
I found the reason of my server freeze:
COMMIT-LOG-WRITER thread is gone, dead, so the blocking queue in
PeriodicCommitLogExecutorService is full, then all mutationStage jobs
are stuck on the mutations flushing.
the COMMIT-LOG-WRITER thread died because at one time the disk was full,
I cleaned up
We run 0.8 in production and it's been working well for us. There are some new
settings that we had to tune for - for example, the default concurrent
compaction is the number of cores. We had to tune that down because we also
run hadoop jobs on our nodes.
On Sep 8, 2011, at 4:44 PM, Anand Som
Twitter runs 0.8 in production/closer to trunk. No big issues from us.
On Thu, Sep 8, 2011 at 8:53 PM, Eric Czech wrote:
> We just migrated from .7.5 to .8.4 in our production environment and it was
> definitely the least painful transition yet (coming all the way from the .4
> release series).
We just migrated from .7.5 to .8.4 in our production environment and it was
definitely the least painful transition yet (coming all the way from the .4
release series). It's been about a week for us but so far so good.
On Thu, Sep 8, 2011 at 9:25 PM, Dominic Williams <
dwilli...@fightmymonster.co
Hi I've just migrated to 0.8.5 and from first looks it is a giant leap
forward
- better use of CPU and memory
- able to scrub files previously unfixable on 0.7.6-2
etc
On 9 September 2011 01:45, Anthony Ikeda wrote:
> We plan to and have been using it in Dev and QA. There are some bugs that
> hav
Hello,
If two different instances of cassandra are running on separate machines,
but both are unfortunately configured to use the default cluster name, "Test
Cluster", do they gang up as one cluster (even though they were intended to
be two separate stand-alone instances), so that dropping keyspac
I have 3 nodes and RF=3. I tried to repair every node in the cluster by
using "nodetool repair mykeyspace mycf" on every column family. it finished
within 3 hours, the data size is no more than 50GB.
after the repair, I have tried using nodetool repair immediately to repair
the entire node, but
We plan to and have been using it in Dev and QA. There are some bugs that
have been fixed that we are looking forward to in 0.8.5 and probably that
would be the better build for production (there is a quorum bug that we will
need).
Otherwise no other 0.8 issues that we are aware of. We did go thro
CL.QUORUM is supported with any replication strategy, not just simple.
Also, Cassandra's optimizing of cross-DC writes only requires that it
know (via a correctly configured Snitch) where each node is located.
It is not affected by replication strategy choice.
On Thu, Sep 8, 2011 at 3:14 PM, Anan
On Thu, Sep 8, 2011 at 4:14 PM, Anand Somani wrote:
> Hi,
>
> Have a requirement, where data is spread across multiple DC for disaster
> recovery. So I would use the NTS, that is clear, but I have some questions
> with this scenario
>
>- I have 2 Data Centers
>- RF - 2 (active DC) , 2 (pa
On Thu, Sep 8, 2011 at 5:12 PM, Dean Hiller wrote:
> I was wondering something. Since I can take OPP and I can create a layer
> that for certain column families, I hash the key so that some column
> families are just like RP but on top of OPP and some of my other column
> families are then on OP
Hi
Currently we are using 0.7.4 and was wondering if I should upgrade to
0.7.8/9 or move to 0.8? Is anybody using 0.8 in production and what is their
experience?
Thanks
I was wondering something. Since I can take OPP and I can create a layer
that for certain column families, I hash the key so that some column
families are just like RP but on top of OPP and some of my other column
families are then on OPP directly so I could use lucandra, why not make RP
deprecate
thanks this is perfect...yeah, we want 4 nodes(2 in each data center) so
just a bit more than 3 ;) so we can have both datacenters be active at the
same time and not have to write to the other datacenter except in the
background. This is perfect..hbase couldn't do this which I wanted
badly alo
to close on this issue. I just had whatever the default cassandra 0.8.3
untar had and fixing DNS resolved the issue for me. My computer was not in
DNS so I guess it has to be when trying a multinode install.
thanks,
Dean
On Sat, Aug 6, 2011 at 10:10 PM, aaron morton wrote:
> Do you have MX4J in
Probably because you had some non-long data in it, then added the long type
later.
On Thu, Sep 8, 2011 at 2:51 PM, amulya rattan wrote:
> But I explicitly remember List throwing "long is exactly 8 bytes" when i
> invoked on a column family with long as key.
> Why would that happen?
>
>
> On Thu,
Hi,
Have a requirement, where data is spread across multiple DC for disaster
recovery. So I would use the NTS, that is clear, but I have some questions
with this scenario
- I have 2 Data Centers
- RF - 2 (active DC) , 2 (passive DC)
- with NTS - Consistency level options are - LOCAL_QUOR
But I explicitly remember List throwing "long is exactly 8 bytes" when i
invoked on a column family with long as key.
Why would that happen?
On Thu, Sep 8, 2011 at 10:07 AM, Jonathan Ellis wrote:
> List should work fine on any schema, including long keys.
>
>
> On Thu, Sep 8, 2011 at 8:23 AM, am
It was exactly due to 2890, and the fact that the first replica is always the
one with the lowest value IP address. I patched cassandra to pick a random
node out of the replica set in StorageProxy.java findSuitableEndpoint:
Random rng = new Random();
return endpoints.get(rng.nextInt(endpoints.
(1) You should plan enough capacity that you can handle normal
compaction load while serving requests
(1a) You can control how aggressive compaction is using the
compaction_throughput_mb_per_sec setting
(2) It is not recommended to force compaction of everything using
nodetool compact
On Thu, Sep
I did a nodetool compact while the Cassandra server was serving
requests, it almost never finishes, and the service latency becomes
very long
then I terminated the traffic, compaction finishes shortly after.
should I disable client requests to a node being compacted while I
carry out the compacti
Cool, all those fixes will be going into our prod env! Congrats!
Anthony
On Thu, Sep 8, 2011 at 7:51 AM, Stephen Connolly <
stephen.alan.conno...@gmail.com> wrote:
> can take up to 12 hours for the sync to central
>
> - Stephen
>
> ---
> Sent from my Android phone, so random spelling mistakes, r
ok, found this is likely due to GC... I'm seeing full GC that runs
20seconds without actually removing anything:
35240.526: [Full GC [PSYoungGen: 1760704K->1668729K(1848128K)]
[PSOldGen: 4095999K->4095999K(4096000K)] 5856703K->5764729K(5944128K)
[PSPermGen: 24885K->24871K(25152K)], 20.6780790 sec
this is trunk.
sorry I did more tests, the -XX:-UseCompressedOops suggested by
Jonathan actually DOES solve the problem. my previous tries possibly
used the wrong scripts.
Thanks guys
Yang
On Thu, Sep 8, 2011 at 12:07 AM, Sylvain Lebresne wrote:
> Are you using current trunk ? Or 0.8 ?
>
> B
What is your bottleneck?
spyced.blogspot.com/2010/01/linux-performance-basics.html
On Thu, Sep 8, 2011 at 10:14 AM, Ben Ashton wrote:
> Hi Guys,
>
> I have our multi DC setup running on EC2.
>
> Latency on the connections between the servers is <2ms, monitored
> writes are ~3-4ms, reads are 50 t
Hi Guys,
I have our multi DC setup running on EC2.
Latency on the connections between the servers is <2ms, monitored
writes are ~3-4ms, reads are 50 to 2200 ms, normally ~80ms
Is this normal? I know there are some optimisation java guys can do
with hector, but is there anything I can do on a sys
can take up to 12 hours for the sync to central
- Stephen
---
Sent from my Android phone, so random spelling mistakes, random nonsense
words and other nonsense are a direct result of using swype to type on the
screen
On 8 Sep 2011 06:40, "Roshan Dawrani" wrote:
> Hi,
>
> The artefacts at
> http:
List should work fine on any schema, including long keys.
On Thu, Sep 8, 2011 at 8:23 AM, amulya rattan wrote:
> Row key can certainly be of type long..you'd just have to set
> key_validataion_class to be LongType.
>
> However, doing list on column family would throw an error..please look at
> h
Hi,
The artefacts at
http://mvnrepository.com/artifact/org.apache.cassandra/cassandra-all still
do not reflect 0.8.5.
Does the availability at maven lag behind by much?
Cheers.
On Thu, Sep 8, 2011 at 5:45 PM, Sylvain Lebresne wrote:
> The Cassandra team is pleased to announce the release of Ap
Row key can certainly be of type long..you'd just have to set
key_validataion_class to be LongType.
However, doing list on column family would throw an error..please look at
http://wiki.apache.org/cassandra/FAQ#a_long_is_exactly_8_bytes
On Thu, Sep 8, 2011 at 8:14 AM, Thamizh wrote:
> Hi All,
>
If the queries are working successfully, I'm afraid I don't understand
the problem.
On Wed, Sep 7, 2011 at 12:48 PM, Thamizh wrote:
>
> Hi,
>
> Here is my sample row. I wanted to execute below 2 queries. CF:ip
> 1. get ip where ip=19268678;
> 2. get ip where domain='google.com';
>
> Here both ip
See this thread:
http://mail-archives.apache.org/mod_mbox/cassandra-user/201109.mbox/%3ccaldd-zhuflt3urdsk0ahsmqdj-n1keyxonn4rgzjjz13cag...@mail.gmail.com%3E
On Thu, Sep 8, 2011 at 7:36 AM, Dikang Gu wrote:
> I have a 4 cassandra 0.8.1 nodes in the cluster, one node crashes and I'm
> trying to re
Congrats guys!
On Sep 8, 2011, at 1:37 PM, Dikang Gu wrote:
> Congratulations!
>
> On Thu, Sep 8, 2011 at 8:15 PM, Sylvain Lebresne wrote:
> The Cassandra team is pleased to announce the release of Apache Cassandra
> version 0.8.5.
>
> Cassandra is a highly scalable second-generation distribu
I have a 4 cassandra 0.8.1 nodes in the cluster, one node crashes and I'm
trying to restart it.
But I encounter the following errors during the startup, is this a known
bug?
DEBUG [main] 2011-09-08 20:26:17,959 Table.java (line 305) Initializing
system.NodeIdInfo
DEBUG [main] 2011-09-08 20:26:17
Congratulations!
On Thu, Sep 8, 2011 at 8:15 PM, Sylvain Lebresne wrote:
> The Cassandra team is pleased to announce the release of Apache Cassandra
> version 0.8.5.
>
> Cassandra is a highly scalable second-generation distributed database,
> bringing together Dynamo's fully distributed design an
Hi,
Looking forward to having 0.8.5 artifacts available from maven repo too.
Cheers.
On Thu, Sep 8, 2011 at 5:45 PM, Sylvain Lebresne wrote:
> The Cassandra team is pleased to announce the release of Apache Cassandra
> version 0.8.5.
>
> Cassandra is a highly scalable second-generation dist
The Cassandra team is pleased to announce the release of Apache Cassandra
version 0.8.5.
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:
http://cassand
Hi All,
Is there a way to store number(longtype) as row key in Cassadra?
I wanted to execute range query based on row key value. e.g $list
info[12345:]; . It should list all the rowkeys which are >= 12345.
Is there a way accompolish this in cassandra? Secondary index does
not helped me. So I
Are you using current trunk ? Or 0.8 ?
Because if on trunk, a SIGSEGV could also be due to CASSANDRA-2521,
if we happen to force the unmapping of a file but tries to access it afterwards
(which shouldn't happen but ...).
--
Sylvain
On Thu, Sep 8, 2011 at 7:36 AM, Yang wrote:
> h, all other
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