Hello,
I'm running a 1.1.2 Cassandra 2 nodes wide cluster with RF=2 (CL = 1,
nodes are m1.large from Amazon).
I had this error 524 times last month on the node 1 and 2805 time on
the second node.
Should I worry about it ? How can I fix these errors ?
Alain
2012/6/2 Peter Schuller
Hi nobody knows about this ?
Alain
2012/9/3 Alain RODRIGUEZ arodr...@gmail.com
Hello,
I'm running a 1.1.2 Cassandra 2 nodes wide cluster with RF=2 (CL = 1,
nodes are m1.large from Amazon).
I had this error 524 times last month on the node 1 and 2805 time on
the second node.
Should I
This problem is not new to 1.1
That's what I understood from your last comment.
Is there a way to fix this error ? What is its impact on my data ?
Alain
2012/9/7 Peter Schuller peter.schul...@infidyne.com
This problem is not new to 1.1.
On Sep 6, 2012 5:51 AM, Radim Kolar h...@filez.com
Hi
@Robin, about the log message:
Sometimes you can see log messages that indicate that counters are out of
sync in the cluster and they get repaired. My guess would be that the
repairs actually destroys it, however I have no knowledge of the underlying
techniques.
Here you got an answer form
I would like to understand or do my best helping you to understand this
issue.
I got the following (shortened) logs:
(03a227f0-a5c3-11e1--b7f5e49dceff, 3, 3) and
(03a227f0-a5c3-11e1--b7f5e49dceff, 3, 0)
(03a227f0-a5c3-11e1--b7f5e49dceff, 6, 6) and
I think that's inconsistent with the hypothesis that unclean shutdown is
the sole cause of these problems
I agree, we just never shut down any node, neither had any crash, and yet
we have these bugs.
About your side note :
We know about it, but we couldn't find any other way to be able to
Hi,
Same thing here:
2 nodes, RF = 2. RCL = 1, WCL = 1.
Like Tamar I never ran a major compaction and repair once a week each node.
10.59.21.241eu-west 1b Up Normal 133.02 GB
50.00% 0
10.58.83.109eu-west 1b Up Normal 98.12 GB
50.00%
. cassandra does not auto-delete
data that it doesn't use anymore just in case you want to move the tokens
again or otherwise undo.
try nodetool cleanup
On Wed, Oct 10, 2012 at 2:01 AM, Alain RODRIGUEZ arodr...@gmail.comwrote:
Hi,
Same thing here:
2 nodes, RF = 2. RCL = 1, WCL = 1
Well I guess we will need some information to help you...
At least:
-Hardware ?
-Version of Cassandra ?
-Any specific action before restarting ?
-cassandra.yaml (options about compaction) ?
-...
Alain
2012/10/15 Manu Zhang owenzhang1...@gmail.com
My Cassandra is compacting like mad (look at
I've got the same problem, and other people in the mailing list are
reporting the same issue.
I don't know what is happening here.
RF 2, 2 nodes :
10.59.21.241eu-west 1b Up Normal 137.53 GB
50.00% 0
10.58.83.109eu-west 1b Up Normal 102.46
I see. So if I don't use the '-pr' option, triggering repair on node-00 is
sufficient to repair the first 3 nodes.
No need to cron a repair on node-{01,02}.
correct?
forget it. this was nonsense.
In my mind it does make sense, and what you're saying is correct. But I
read that it was better to
Hi Jonathan.
We are currently running the datastax AMI on amazon. Cassandra is in
version 1.1.2.
I guess that the datastax repo (deb
http://debian.datastax.com/communitystable main) will be updated
directly in 1.1.6 ?
Replaying already-flushed data a second time is harmless -- except
for
I have no clue. I never did it even if I am planning to do so.
1 - Did you just spent 1 month with a cluster in an unstable state ? Had
you any issue during this time related to the transitional state of your
cluster ?
I am currently storing counters with:
row = objectId, column name =
http://www.thelastpickle.com
On 31/10/2012, at 3:39 AM, Jason Wee peich...@gmail.com wrote:
maybe enable the debug in log4j-server.properties and going through the
log to see what actually happen?
On Tue, Oct 30, 2012 at 7:31 PM, Alain RODRIGUEZ arodr...@gmail.comwrote:
Hi,
I have an issue
guess it don't drain before...
I was asking to understand how you did the upgrade.
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 1/11/2012, at 11:39 AM, Alain RODRIGUEZ arodr...@gmail.com wrote:
What version of cassandra
, get a value that none of other existing node has ?
Is there a way to fix the data (isn't repair supposed to do it) ?
Alain
2012/11/1 Alain RODRIGUEZ arodr...@gmail.com
Can you try it thought, or run a repair ?
Repairing didn't help
My first thought is to use QUOURM
This fix the problem
-bloomfilters
On Nov 7, 2012, at 4:56 AM, Alain RODRIGUEZ wrote:
Hi,
We just had some issue in production that we finally solve upgrading
hardware and increasing the heap.
Now we have 3 xLarge servers from AWS (15G RAM, 4 cpu - 8 cores). We add
them and then removed the old ones
Did you change the RF or had a node down since you repaired last time ?
2012/11/8 Henrik Schröder skro...@gmail.com
No, we're not using columns with TTL, and I performed a major compaction
before the repair, so there shouldn't be vast amounts of tombstones moving
around.
And the increase
I think there is just a few solutions.
- Secondary index on username
- CF used as an index (store username as row and all the uuid of users with
this username as columns)
- Get all the data and filter after (really poor performances depending on
the size of the data set)
I can't see an other way
On cassandra-cli if you describe cluster; I guess you will see an
UNREACHABLE node.
If you do so, there is a way to remove this unreachable node.
Go to the JMX management console (ip_of_one_up_node:8081 by default)
Then go to the org.apache.cassandra.net:type=Gossiper link and use the
this message and any copies.
On Fri, Nov 9, 2012 at 2:50 PM, Alain RODRIGUEZ arodr...@gmail.comwrote:
On cassandra-cli if you describe cluster; I guess you will see an
UNREACHABLE node.
If you do so, there is a way to remove this unreachable node.
Go to the JMX management console
Thanks for sharing this. We are also using Cassandra + Storm + Queue
messaging (Kestrel for now) and are always glad to learn.
Alain
2012/11/9 Brian O'Neill b...@alumni.brown.edu
For those looking to index data in Cassandra with Elastic Search, here
is what we decided to do:
@Rob Coli
Does the sstablesplit function exists somewhere ?
2012/11/10 Jim Cistaro jcist...@netflix.com
For some of our clusters, we have taken the periodic major compaction
route.
There are a few things to consider:
1) Once you start major compacting, depending on data size, you may be
It's been Does anybody has an answer to any of these questions ?
Alain
2012/11/7 Hiller, Dean dean.hil...@nrel.gov
+1, I am interested in this answer as well.
From: Alain RODRIGUEZ arodr...@gmail.commailto:arodr...@gmail.com
Reply-To: user@cassandra.apache.orgmailto:user
-
Aaron Morton
Freelance Cassandra Developer
New Zealand
@aaronmorton
http://www.thelastpickle.com
On 14/11/2012, at 11:39 PM, Alain RODRIGUEZ arodr...@gmail.com wrote:
Hi, I am running C* 1.1.2 and there is no way to turn the compression on
for a CF.
Here is the command I
We just upgrade to C* 1.1.6
We can now change anything using the CLI or cqlsh. So problem solved.
2012/11/14 Alain RODRIGUEZ arodr...@gmail.com
Oh! That's obviously the exact same issue. I didn't find this thread while
searching about my issue.
We will upgrade.
Thanks for the link
New Zealand
@aaronmorton
http://www.thelastpickle.com
On 16/11/2012, at 3:21 AM, Alain RODRIGUEZ arodr...@gmail.com wrote:
We had an issue with counters over-counting even using the nodetool drain
command before upgrading...
Here is my bash history
69 cp /etc/cassandra/cassandra.yaml
This looks like the counters were more out of sync before the upgrade than
after?
My guess is the update makes some counters over-count since I saw the value
of the sum of our daily counter increase by 2000 after each restart at the
exact moment that the node is marked as being up. This counter
,
disclose, distribute, copy, print or rely on this e-mail. If you have
received this message in error, please contact the sender immediately and
irrevocably delete this message and any copies.
On Fri, Nov 9, 2012 at 4:21 PM, Alain RODRIGUEZ arodr...@gmail.comwrote:
You have to install mx4j
://www.thelastpickle.com
On 20/11/2012, at 6:27 AM, Alain RODRIGUEZ arodr...@gmail.com wrote:
I have backed up production sstables from one of my 3 production nodes
(RF=3) and I want to use them on my dev environment.(C* 1.1.6 on both
environments)
My dev server is a 4 core, 4 GB RAM hardware runing on ubuntu
@Mat
Well I guess you could add your Ruby client to this list since there is not
a lot of them yet.
http://wiki.apache.org/cassandra/ClientOptions
Alain
2012/11/20 Mat Brown m...@brewster.com
As the author of Cequel, I can assure you it is excellent ; )
We use it in production at Brewster
INFO 12:10:09,233 JNA mlockall successful
So I guess I do.
2012/11/21 Rob Coli rc...@palominodb.com
On Tue, Nov 20, 2012 at 2:03 AM, Alain RODRIGUEZ arodr...@gmail.com
wrote:
] Thanks for the work around, setting disk_access_mode: standard worked.
Do you have working JNA, for reference
hmmm, it's only a work around.
It's only a dev server... :).
But if you want me to try some things (configurations or whatever) on it
just let me know.
Alain
2012/11/21 Alain RODRIGUEZ arodr...@gmail.com
INFO 12:10:09,233 JNA mlockall successful
So I guess I do.
2012/11/21 Rob Coli rc
Hi Alexandru,
We are running a 3 node Cassandra 1.1.5 cluster with a 3TB Raid 0 disk per
node for the data dir and separate disk for the commitlog, 12 cores, 24 GB
RAM
I think you should tune your architecture in a very different way. From
what I know having too much data on one node is bad, not
Hi Francisco,
Snapshots folders are inside the CF folders for a few weeks (months ?). It
is a modification that have been made in a recent version of C*.
Is this the normal behavior of nodetool?
Yes, it is the normal behaviour for snapshots.
2012/11/26 Francisco Trujillo Hacha
Hi Edward, can you share the link to this blog ?
Alain
2012/12/13 Edward Capriolo edlinuxg...@gmail.com
Ed ENuff s
19, 2012 at 2:30 PM, Alain RODRIGUEZ arodr...@gmail.comwrote:
@Aaron
Is there a sustained difference or did it settle back ?
Sustained, clearly. During the day all nodes read at about 6MB/s while
this one reads at 30-40 MB/s. At night while other reads 2MB/s the broken
nodes reads at 8-10MB/s
it, hopping this will
fix my issue...
I wait a bit more because I am hopping we will find out what is the issue
and this will help the C* community.
2012/12/20 Alain RODRIGUEZ arodr...@gmail.com
routing more traffic to it?
So shouldn't I see more network in on that node in the AWS console
node
cluster which I am slowly massaging into a good state I haven't seen this
in 15+ hours of operation…
This looks related to JNA?
From: Alain RODRIGUEZ arodr...@gmail.com
Reply-To: user@cassandra.apache.org user@cassandra.apache.org
Date: Thursday, January 3, 2013 8:42 AM
To: user
of operation…
This looks related to JNA?
From: Alain RODRIGUEZ arodr...@gmail.com
Reply-To: user@cassandra.apache.org user@cassandra.apache.org
Date: Thursday, January 3, 2013 8:42 AM
To: user@cassandra.apache.org user@cassandra.apache.org
Subject: Error after 1.2.0 upgrade
In a dev env, C* 1.1.7
Is the default 'auto' the best possible option so that no one has to worry
about it anymore ?
Yes something like that I guess.
You can add the disk_access_mode property to your cassandra.yaml and set it
to standard to disable memory mapped access, it will work. It's the same
thing for the
By the way, The cluster name is only cosmetic. It may not be worth to
change it since it induce a downtime and considering the mishandling risk.
Alain
2013/1/10 Michael Kjellman mkjell...@barracuda.com
I think Arron meant /var/lib/cassandra (by default)
Check there (unless you changed you
I am curious to know if vnodes would change that or if that statement was
valid to begin with!
This question was answered yesterday by Jonathan Ellis during the Datastax
C*ollege Webinar:
http://www.datastax.com/resources/webinars/whatsnewincassandra12 (about the
end of the video).
The answer is
The key advantage of vnodes in this case is that you do not need to
manually rebalance the cluster when adding or removing nodes.
Well, I thing that a bigger key advantage of vnodes would rather be the
performance improvement due to the evenly distributed load while streaming
data.
But it indeed
If I remember well the default minimum heap size is 1 GB. That may cause
you a problem. You have to run with more RAM CPU.
Maybe can you try with 2 VM with twice CPU RAM for your test. You will
need at least 4 GB RAM to run in production (8GB is better) and I would say
at least 2 cpu (4 would
Shouldn't this vote be addressed to the Developers mailing list instead
of the Users one ?
Just in case it wasn't done on purpose and to be sure that you reach those
concerned about this vote :).
Alain
2013/1/14 Sylvain Lebresne sylv...@datastax.com
We've fixed our fair share of bugs since
fwiw, I have a mixed ubuntu 11.10 / 12.04 6 node cluster (AWS m1.xlarge).
The load average is always between 0 and 5 for 11.10 nodes while 12.04
nodes shows all the time a load between 2 and 20.
I have the same configuration on each node and the average request latency
is a few better on 12.04
You can try it a third time or you can rather try writing to
user-unsubscr...@cassandra.apache.org
Alain
2013/1/28 Olivier Devos olde...@gmail.com
unsubscribe
@Bryan
Other space is used but can be more easily controlled by tuning for
- memtable
- compaction
- key cache
- *row cache*
Isn't row cache stored off-heap since a while ?
2013/1/31 Bryan Talbot btal...@aeriagames.com
On Wed, Jan 30, 2013 at 2:44 PM, Guillermo Barbero
Not sure this will be useful for you but nodetool drain doesn't work
properly well for a while. If you are using counters I recommend you to
remove commit logs after you drained ans stopped the node, before
restarting the node to avoid replaying counts.
Maybe people think that 1.2 = Vnodes, when Vnodes are actually not
mandatory and furthermore it is advised to upgrade and then, after a while,
when all is running smooth, eventually switch to vnodes...
2013/2/13 Brandon Williams dri...@gmail.com
On Tue, Feb 12, 2013 at 6:13 PM, Edward Capriolo
.
If you are deleting parts of wide rows consider reducing the
min_compaction_level_threshold on the CF to 2
Cheers
-
Aaron Morton
Freelance Cassandra Developer
New Zealand
@aaronmorton
http://www.thelastpickle.com
On 12/02/2013, at 4:21 AM, Alain RODRIGUEZ arodr
Is there a particular reason for you to use EBS ? Instance Store
are recommended because they improve performances by reducing the I/O
throttling.
An other thing you should be aware of is that replicating the data to all
node reduce your performance, it is more or less like if you had only one
We probably need more info like the RF of your cluster and CL of your reads
and writes. Maybe could you also tell us if you use vnodes or not.
I heard that Astyanax was not running very smoothly on 1.2.0, but a bit
better on 1.2.1. Yet, Netflix didn't release a version of Astyanax for
C*1.2.
] describe;
Keyspace: TestSpace:
Replication Strategy:
org.apache.cassandra.locator.NetworkTopologyStrategy
Durable Writes: true
Options: [datacenter1:1]
As for the CL it the Astyanax default, which is 1 for both reads and
writes.
Traian.
2013/2/13 Alain RODRIGUEZ arodr...@gmail.com
was
expecting.
Thank you for the reply!
Traian.
2013/2/14 Alain RODRIGUEZ arodr...@gmail.com
Hi Traian,
There is your problem. You are using RF=1, meaning that each node is
responsible for its range, and nothing more. So when a node goes down, do
the math, you just can't read 1/5
.
If you don't use EBS, how is data persistence then maintained in the event
that an instance goes down for whatever reason?
Ken
--
*From: *Alain RODRIGUEZ arodr...@gmail.com
*To: *user@cassandra.apache.org
*Sent: *Thursday, February 14, 2013 8:34:06 AM
From:
http://www.datastax.com/docs/1.2/configuration/node_configuration#num-tokens
About num_tokens: If left unspecified, Cassandra uses the default value of
1 token (for legacy compatibility) and uses the initial_token. If you
already have a cluster with one token per node, and wish to migrate
-to-vnodes
Alain
2013/2/15 Daning Wang dan...@netseer.com
Thanks! suppose I can upgrade to 1.2.x with 1 token by commenting out
num_tokens, how can I changed to multiple tokens? could not find doc
clearly stating about this.
On Thu, Feb 14, 2013 at 10:54 AM, Alain RODRIGUEZ arodr...@gmail.comwrote
-
Aaron Morton
Freelance Cassandra Developer
New Zealand
@aaronmorton
http://www.thelastpickle.com
On 13/02/2013, at 10:14 PM, Alain RODRIGUEZ arodr...@gmail.com wrote:
Hi Aaron, once again thanks for this answer.
So is it possible to delete all the data inserted in some CF between 2
, at 4:21 AM, Alain RODRIGUEZ arodr...@gmail.com wrote:
Hi,
I would like to know if there is a way to delete old/unused data easily ?*
***
I know about TTL but there are 2 limitations of TTL:
- AFAIK, there is no TTL on counter columns
- TTL need
Read the message you answered to, and help yourself !
Alain
2013/2/19 Anurag Gujral anurag.guj...@gmail.com
Unsubscribe me please.
Thanks
A
I am confused. I thought running compact turns off the minor compactions
and users are actually supposed to run upgradesstables (maybe I am on
old documentation?)
Well, that's not true. What happens is that compaction use sstables with an
aproximate same size. So if you run a major
:( :( and we(my project) want minor
compactions to continue.
Thanks,
Dean
From: Alain RODRIGUEZ arodr...@gmail.commailto:arodr...@gmail.com
Reply-To: user@cassandra.apache.orgmailto:user@cassandra.apache.org
user@cassandra.apache.orgmailto:user@cassandra.apache.org
Date: Monday, February 25
Cassandra (C*) has no NULL values. C* is column schemaless, meaning you can
have different columns on each row of the same ColumnFamily (CF).
So if you want to check if a certain column is NULL for a row, you just
check if it exist. By the way, you can store a column with a name and no
value
What am I doing wrong here?
You are probably using a RandomPartitioner (or Murmur3Partitioner) which
randomize keys to avoid hot spots.
Basically, you just can't use range query because 'nlxx' is stored
as md5('nlxx'). You should better modify your model to use column
slice,
Things you can find searching on the web :
http://wiki.apache.org/cassandra/DataModel#Range_queries
2013/2/27 Alain RODRIGUEZ arodr...@gmail.com
What am I doing wrong here?
You are probably using a RandomPartitioner (or Murmur3Partitioner) which
randomize keys to avoid hot spots
Hi Victor.
AFAIK, there is nothing like that. But I am quite sure that if you don't
understand a log entry someone in this mailing list will be able to help
you with it.
Alain
2013/2/25 Víctor Hugo Oliveira Molinar vhmoli...@gmail.com
Hello everyone!
I'd like to know if there is any guide
DO *NOT* USE THAT!!!
Crystal clear ;-). Thanks for the warning.
Alain
2013/3/1 Sylvain Lebresne sylv...@datastax.com
On C* 1.2.1 I see that the following query works:
update counters set value=value+5 where owner_id='1' and
counter_type='trash';
...while the following one gives an
Any clue on this ?
2013/2/25 Alain RODRIGUEZ arodr...@gmail.com
Hi,
I am having issues after decommissioning 3 nodes one by one of my 1.1.6 C*
cluster (RF=3):
On the c.164 node, which was added a week after removing the 3 nodes,
with gossipinfo I have:
/a.135
RPC_ADDRESS:0.0.0.0
Jason Wee peich...@gmail.com
try assasinate from the jmx?
http://nartax.com/2012/09/assassinate-cassandra-node/
or try cassandra -Dcassandra.load_ring_state=false
http://www.datastax.com/docs/1.0/references/cassandra#options
On Tue, Mar 5, 2013 at 6:54 PM, Alain RODRIGUEZ arodr
anymore. Repairs do easily trigger a few hundred
compactions though, but it's not that bad.
/Janne
On Feb 25, 2013, at 17:10 , Alain RODRIGUEZ arodr...@gmail.com wrote:
Hi
I am just wondering... Wouldn't it always be worth it to use LCS on
counter CF since LCS is optimized for reads
What would be the exact CQL3 syntax to create a counter CF with composite
row key and not predefined column names ?
Is the following supposed to work ?
CREATE TABLE composite_counter (
aid text,
key1 text,
key2 text,
key3 text,
value counter,
Wow, that's quite new... Threadjack to ask how to unsubscribe, amazing.
Help yourself: https://www.google.com/search?q=unsubscribe+cassandra
Any of the first results should help you. Goodbye !
2013/3/6 deepansh jain deepanshcri...@gmail.com
how to unsubscribe from mailing list
On Wed, Mar
I'm still wondering about how to chose the size of the sstable under LCS.
Defaul is 5MB, people use to configure it to 10MB and now you configure it
at 128MB. What are the benefits or inconveniants of a very small size
(let's say 5 MB) vs big size (like 128MB) ?
Alain
2013/3/8 Al Tobey
Hi,
We have some issue having a high read throughput. I wanted to alleviate
things by turning the row cache ON.
I set the row cache to 200 on one node and enable caching 'ALL' on the 3
most read CF. There is the effect this operation had on my JVM:
Any clue on this ?
Row cache well configured could avoid us a lot of disk read, and IO
is definitely our bottleneck... If someone could explain why the row cache
has so much impact on my JVM and how to avoid it, it would be appreciated
:).
2013/3/8 Alain RODRIGUEZ arodr...@gmail.com
Hi,
We
I can add that I have JNA corectly loaded, from the logs: JNA mlockall
successful
2013/3/11 Alain RODRIGUEZ arodr...@gmail.com
Any clue on this ?
Row cache well configured could avoid us a lot of disk read, and IO
is definitely our bottleneck... If someone could explain why the row cache
-
Aaron Morton
Freelance Cassandra Consultant
New Zealand
@aaronmorton
http://www.thelastpickle.com
On 11/03/2013, at 5:30 AM, Sávio Teles savio.te...@lupa.inf.ufg.br
wrote:
I have the same problem!
2013/3/11 Alain RODRIGUEZ arodr...@gmail.com
I can add that I have JNA
out cassandra code now to dig a little deeper into this property.
Dean
From: Alain RODRIGUEZ arodr...@gmail.commailto:arodr...@gmail.com
Reply-To: user@cassandra.apache.orgmailto:user@cassandra.apache.org
user@cassandra.apache.orgmailto:user@cassandra.apache.org
Date: Wednesday, March 13, 2013
.
Ok, but why am I always running between 4 and 6 GB heap used, even when
there is no traffic ?
2013/3/13 Alain RODRIGUEZ arodr...@gmail.com
called index_interval set to 128
I think this is for BloomFilters actually.
2013/3/13 Hiller, Dean dean.hil...@nrel.gov
Going to 1.2.2 helped us
of {} MBs and provider {
Cheers
-
Aaron Morton
Freelance Cassandra Consultant
New Zealand
@aaronmorton
http://www.thelastpickle.com
On 12/03/2013, at 1:44 AM, Alain RODRIGUEZ arodr...@gmail.com wrote:
I am using C*1.1.6.
Did you restart the node after changing
CassandraDaemon.java
(line 133) Exception in thread Thread[WRITE-/SOME-IP,5,**main]
java.lang.RuntimeException: Unknown host /0.0.0.0 with no default
configured
It will happen if your rpc_address is set to 0.0.0.0.
M.
W dniu 14.03.2013 13:03, Alain RODRIGUEZ pisze:
Thanks for this pointer but I
that is not defined in
your cluster's config (e.g. in cassandra-topology.properties for
PropertyFileSnitch)
M.
M.
W dniu 14.03.2013 13:03, Alain RODRIGUEZ pisze:
Thanks for this pointer but I don't think this is the source of our
problem
since we use 1 data center and Ec2Snitch.
2013/3/14
think it is. By turning that to 512 or maybe even 1024, you will
consume less ram there as well though I ran this test in QA and my key
cache size stayed the same so I am really not sure(I am actually checking
out cassandra code now to dig a little deeper into this property.
Dean
From: Alain
to LT releases so we know
we can always safely first upgrade to an LT release and then upgrade to
another LT release from that one…just a thought. This would also get more
people using/testing the same upgrade paths which would help everyone.
Dean
From: Alain RODRIGUEZ arodr
testing if at least to get comfortable with the process.
Dean
From: Alain RODRIGUEZ arodr...@gmail.commailto:arodr...@gmail.com
Reply-To: user@cassandra.apache.orgmailto:user@cassandra.apache.org
user@cassandra.apache.orgmailto:user@cassandra.apache.org
Date: Thursday, March 14, 2013 7:41 AM
In 1.2, you may want to use the nodetool removenode if your server i broken
or unreachable, else I guess nodetool decommission remains the good way to
remove a node. (http://www.datastax.com/docs/1.2/references/nodetool)
When this node is out, rm -rf /yourpath/cassandra/* on this serveur, change
...@hexkeep.com
Is nodetool removenode / decommission actually needed having a RF 1 ?
What does it do, exactly ?
Il giorno 19/mar/2013, alle ore 16:45, Alain RODRIGUEZ arodr...@gmail.com
ha scritto:
In 1.2, you may want to use the nodetool removenode if your server i
broken or unreachable
Using the unsafeAssassinateEndpoint function with old IPs from JMX should
do the trick.
This was already discussed in this mailing list, search using
unsafeAssassinateEndpoint
as keyword to know all that you need to know about it.
Hope you'll be ok after that.
Alain
2013/3/21 Ben Chobot
?
On Mar 21, 2013, at 11:53 AM, Alain RODRIGUEZ wrote:
Using the unsafeAssassinateEndpoint function with old IPs from JMX should
do the trick.
This was already discussed in this mailing list, search using
unsafeAssassinateEndpoint
as keyword to know all that you need to know about it.
Hope
: Alain RODRIGUEZ arodr...@gmail.commailto:arodr...@gmail.com
To: user@cassandra.apache.orgmailto:user@cassandra.apache.org
Cc: Wei Zhu wz1...@yahoo.commailto:wz1...@yahoo.com
Sent: Friday, March 8, 2013 1:25 AM
Subject: Re: Size Tiered - Leveled Compaction
I'm still wondering about how
We use C* on m1.xLarge AWS EC2 servers, with 4 disks xvdb, xvdc, xvdd, xvde
parts of a logical Raid0 (md0).
I use to see their use increasing in the same way. This morning there was a
normal minor compaction followed by messages dropped on one node (out of
12).
Looking closely at this node I saw
:57 PM, Alain RODRIGUEZ arodr...@gmail.com wrote:
We use C* on m1.xLarge AWS EC2 servers, with 4 disks xvdb, xvdc, xvdd,
xvde parts of a logical Raid0 (md0).
I use to see their use increasing in the same way. This morning there was
a normal minor compaction followed by messages dropped on one
remember is used more IO than STS
Are you meaning during compactions ? Because I thought that LCS should
decrease the number of disks reads (since 90% of the data aren't spread
across multiple sstables and C* needs to read only a file to find the
entire row) while not compacting right ?
Could we have the logs after starting each node ?
2013/4/16 Sai Kumar Ganji saikumarganj...@gmail.com
Hello Guys,
I am trying to setup a 2 node Cassandra clustesr.
My parameters are:
*Node1(ip1):*
initial_token: 0
rpc_address: ip1
listen_address: ip1
seeds: “ip1
*Node2(ip2):*
Hi,
The company I work for is having so much success that we are expanding
worldwide :). We have to deploy our Cassandra servers worldwide too in
order to improve the latency of our new abroad customers.
I am wondering about the process to grow from one data center to a few of
them. First thing
I would say add your 3 servers to the 3 tokens where you want them, let's
say :
{
0: {
0: 0,
1: 56713727820156410577229101238628035242,
2: 113427455640312821154458202477256070485
}
}
or these token -1 or +1 if you already have these token used. And then just
?
About seeds = Yes. Have 3 from each.
What is the point of this ?
I didn't thought this change would be that tricky, thank you guys for these
warnings and your help ;)
Alain
2013/4/23 Dane Miller d...@optimalsocial.com
On Thu, Apr 18, 2013 at 7:41 AM, Alain RODRIGUEZ arodr...@gmail.com
Any idea of what they are going to say about this subject or have I to wait
? Will the video record of this conference be public ?
thanks,
Alain
2011/11/4 Alain RODRIGUEZ arodr...@gmail.com
Hi all,
I started this thread in the phpCassa google group, but I thinks its place
is here
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