No errors in the system.log file [root@cassa09 cassandra]# grep "ERROR"
system.log[root@cassa09 cassandra]#
Nothing.
On Thursday, February 26, 2015 1:55 PM, mck wrote:
Any errors in your log file?
We saw something similar when bootstrap crashed when rebuilding
secondary indexes.
Se
Hello Jan,
Yes I do have ntp and it is in synch.
On Thursday, February 26, 2015 11:49 AM, Jan Kesten
wrote:
Hi Batranut,
apart from the other suggestions - do you have ntp running on all your
cluster nodes and are times in sync?
Jan
All the nodes have the same version. 2.0.12
, Batranut Bogdan wrote:
I have a new node that I want to add to the ring. The problem is that nodetool
says UJ I have left it for several days and the status has not changed. In
Opscenter it is "seen" as in an unknown cluster.
If I were you, I would do the following [1] :
1) stop t
Hello all,
I have a new node that I want to add to the ring. The problem is that nodetool
says UJ I have left it for several days and the status has not changed. In
Opscenter it is "seen" as in an unknown cluster.
>From the time that I started it, it was streaming data and the data size is
>5,9
ds list. Then I have decommissioned it, removed it's IP from the seed
list, deleted all data / commit log / saved caches and started it. Since then I
have not manualy deleted any files .
Any ideeas?
On Tuesday, February 24, 2015 11:46 AM, Batranut Bogdan
wrote:
Hello all,
One of
Hello all,
One of my C* throws a big amount of exceptions like this:
ERROR [ReadStage:792] 2015-02-24 10:43:54,183 CassandraDaemon.java (line 199)
Exception in thread Thread[ReadStage:792,5,main]java.lang.RuntimeException:
java.lang.RuntimeException: java.io.FileNotFoundException:
/data/ranks/p
need the same
seeds in the yaml file. Here is more info:
http://www.datastax.com/documentation/cassandra/2.0/cassandra/initialize/initializeSingleDS.html
Sean Durity – Cassandra Admin, Big Data TeamTo engage the team,create a
request From: Batranut Bogdan [mailto:batra...@yahoo.com]
Sent: Tues
the nodes represented properly in OpsCenter.
Sean Durity – Cassandra Admin, Home Depot From: Batranut Bogdan
[mailto:batra...@yahoo.com]
Sent: Tuesday, February 17, 2015 10:20 AM
To: user@cassandra.apache.org; reynald.bourtembo...@esrf.fr
Subject: Re: Adding new node to cluster Hello, I
UN: means your node is Up and in Normal state
UN in nodetool is good ;-)
On 17/02/2015 13:56, Batranut Bogdan wrote:
Hello all,
I have an existing cluster. When adding a new node, I saw that Opscenter saw
the node in an unknown cluster. In the yaml, the cluster name is the same.
Hello all,
I have an existing cluster. When adding a new node, I saw that Opscenter saw
the node in an unknown cluster. In the yaml, the cluster name is the same. So i
have stopped the node and added it's ip address in the list of seeds. Now
Opscenter sees my node. But nodetool status now sees i
Got it, thank you very much.
On Friday, February 13, 2015 4:04 PM, Jens Rantil
wrote:
Hi Bastranut,
A few minutes between each node will do.
Cheers,Jens
On Fri, Feb 13, 2015 at 1:12 PM, Batranut Bogdan wrote:
Hello,
When adding a new node to the cluster I need to wait for each
, Batranut Bogdan wrote:
I have added new nodes to the existing cluster. In Opscenter I do not see any
streams... I presume that the new nodes get the data from the rest of the
cluster via streams. The existing cluster has TB magnitude, and space used in
the new nodes is ~90 GB. I must admit that I
Hello,
I have added new nodes to the existing cluster. In Opscenter I do not see any
streams... I presume that the new nodes get the data from the rest of the
cluster via streams. The existing cluster has TB magnitude, and space used in
the new nodes is ~90 GB. I must admit that I have restarted
: 1649www.pythian.com
On Wed, Feb 11, 2015 at 3:46 PM, Batranut Bogdan wrote:
Hello all,
I have added new 3 nodes to existing cluster. I must point out that I have
copied the cassandra yaml file, from an existing node and just changed
listen_addres per instructions here: Adding nodes to an existing cluster
Hello all,
I have added new 3 nodes to existing cluster. I must point out that I have
copied the cassandra yaml file, from an existing node and just changed
listen_addres per instructions here: Adding nodes to an existing cluster |
DataStax Cassandra 2.0 Documentation
| |
| | | | | |
Hello,
Is there a metric that will show how many reads per second C* serves? Read
requests shows how many requests are issued to cassandra, but I want to know
how many the cluster can actualy serve .
Got it,
Thank you!
On Tuesday, January 13, 2015 5:00 PM, Yuki Morishita
wrote:
Snapshot during repair is automatically cleared if repair succeeds.
Unfortunately, you have to delete it manually if repair failed or stalled.
On Tue, Jan 13, 2015 at 8:30 AM, Batranut Bogdan wrote
OK Thanks,
But I also read that repair will take a snapshot. Due to the fact that I have
Replication factor 3 for my keyspace, I run nodetool clearsnapshot to keep disk
space use to a minimum. Will this impact my repair?
On Tuesday, January 13, 2015 4:19 PM, Jan Kesten
wrote:
Hi,
I have read that snapshots are basicaly symlinks and they do not take that much
space.Why if I run nodetool clearsnapshot it frees a lot of space? I am seeing
GBs freed...
Neelakantan
wrote:
Is the data distribution OK? Have you tried running repairs?
Rahul
On Jan 13, 2015, at 5:01 AM, Batranut Bogdan wrote:
Hello,
I have a cluster of 6 C* nodes. All machines have the same hardware. I have
noticed in opscenter that when I start reading a lot from the cluster
Hello,
I have a cluster of 6 C* nodes. All machines have the same hardware. I have
noticed in opscenter that when I start reading a lot from the cluster 2 nodes
have read latencies, but the rest do not have such high values. The replication
factor for the keyspace is 3. Also those 2 nodes have l
Hello all,
In my implementation of the FutureCallBack<> interface in the onSuccess method,
I put Thread.currentThread.getName(). What I saw was that there is a
ThreadPool... That is all fine, but seems to me that the pool does not have
that many threads. About 10 from my observations - I did no
Hello all,I just read that the default size of the Key cache is 100 MB. Is it
stored in memory or disk?
Hello all,
If one has a table like this:id text,ts timestampvalues list
PK (id,ts)
How will the DTCS work? I am asking this because the writeTime() function does
not work on collections.
Hello all,
I have a few things that I need to understand.
1 . Here is the scenario: we have a HUGE cf where there are daily writes it is
like a time series. Now we want to change the type of a column in primary key.
What I think we can do is to export to csv, create the new table and write back
Hello all,
I have altered a table in cassandra and on one node it somehow got corrupted. I
the changes did not propagate ok. Ran repair keyspace columnfamily... noting
changed...
Is there a way to repair this?
I have cron jobs that repair every week. node 1 - monday , node 2 tuesday .
On Wednesday, July 23, 2014 7:52 PM, Russell Bradberry
wrote:
sounds like you may need to run a repair
On July 23, 2014 at 12:50:23 PM, Batranut Bogdan (batra...@yahoo.com) wrote:
Hello all,
I have a CF
Hello all,
I have a CF
CREATE TABLE cf (
a text,
b int,
c int,
d int,
e int,
PRIMARY KEY (a)
) WITH
bloom_filter_fp_chance=0.01 AND
caching='KEYS_ONLY' AND
comment='' AND
dclocal_read_repair_chance=0.00 AND
gc_grace_seconds=864000 AND
index_interval=128 AND
re
Hello all,
I have a counter CF defined as pk text PRIMARY KEY, a counter, b counter, c
counter, d counter
After inserting a few million keys... 55 mil, the performance goes down the
drain, 2-3 nodes in the cluster are on medium load, and when inserting batches
of same lengths writes take longer
Hello all,
I have a counter CF defined as pk text PRIMARY KEY, a counter, b counter, c
counter, d counter
After inserting a few million keys... 55 mil, the performance goes down the
drain, 2-3 nodes in the cluster are on medium load, and when inserting batches
of same lengths writes take longer
Hello Robert,
Neither of those actions were taken on that cf as far as I know. In that cf we
only insert historical data. No deletes no drops / truncates.
Thanks
On Monday, May 5, 2014 10:50 PM, Robert Coli wrote:
On Mon, May 5, 2014 at 12:48 PM, Batranut Bogdan wrote:
I have a big col
Hello all
I have a big col family and I see that cassandra is taking snapshots for it. I
do not have incremental enabled. What are the triggers that start the process
of taking a snapshot? Is is automatic ?
Thanks
the real need is there.
Thanks for the answer.
On Thursday, May 1, 2014 1:06 AM, Robert Coli wrote:
On Wed, Apr 30, 2014 at 3:00 PM, Batranut Bogdan wrote:
Is there a way to get cassandra to remove these old and unused tables?
Those directories have to exist after DROP because snapshots taken
Hello all,
I have a question.
I looked in the keyspace directory and saw that old dirs still exist after
dropping the corresponding table.
eg drop table t1 and in /data/keyspace I still see the t1 dir.
Is there a way to get cassandra to remove these old and unused tables?
I don't know about hector but the datastax java driver needs just one ip from
the cluster and it will discover the rest of the nodes. Then by default it will
do a round robin when sending requests. So if Hector does the same the patterb
will againg appear.
Did you look at the size of the dirs?
T
Coli wrote:
On Thu, Apr 24, 2014 at 1:54 PM, Batranut Bogdan wrote:
Is this a setting that will have an impact only on fast cpu + ssd ?
It's a setting that will only have impact if you have CPU or IO to spare. You
don't need a fast CPU or SSD to meet those conditions.
=Rob
Is this a setting that will have an impact only on fast cpu + ssd ?
On Thursday, April 24, 2014 11:52 PM, Robert Coli wrote:
On Thu, Apr 24, 2014 at 12:50 PM, Batranut Bogdan wrote:
Can someone please explain to me what compaction throtheling does ? I am
reffering to the yaml parameter. I
Htop is not the only tool for this . Cassandra will hit io bottlnecks before
cpu (on faster cpus) . A simple solution is to check the size of the data dir
on the boxes. If you have aprox the same size then cassandra is wrinting in the
whole cluster. Check how the data dir size changes when impor
Hello allCan someone please explain to me what compaction throtheling does
? I am reffering to the yaml parameter. I have changed it from the default 16
to 160 but i see no improvement. I have a cluster with hdds. I might be missing
something ...Thankshttps://overview.mail.yahoo.com?.src=iOS";>S
Well grepping the logs for a file resulted in this:
During startup that file was opened OK.
During runtime the compactionexecutor tried to compact more files that included
this one but threw and exception for another one that is first in that list. So
I do not have more info. In one particular da
other nodes in the cluster.
On Tuesday, March 25, 2014 9:53 PM, Duncan Sands wrote:
Hi,
On 25/03/14 19:30, Robert Coli wrote:
> On Tue, Mar 25, 2014 at 5:36 AM, Batranut Bogdan <mailto:batra...@yahoo.com>> wrote:
>
> I am running 2.0.6 and I use /etc/init.d/cassandra s
I am running 2.0.6 and I use /etc/init.d/cassandra start / stop . Also before
stopping I do :
nodetool disablegossip
nodetool disablethrift
nodetool drain
after that /etc/init.d/cassandra stop
On Monday, March 24, 2014 9:48 PM, Robert Coli wrote:
On Mon, Mar 24, 2014 at 9:41 AM, Batranut
Hello all,
I am reposting a question about missing files on one of the nodes of my cluster.
After I first saw that I was missing a ...-Data.db file, I decomissioned the
node, deleted the data and added it back into the cluster. Now I see again that
I am missing some files.
Do you have an ideea
Hello,
A investigation on one of the nodes reveals that I am missing several .db files.
I got FileNotFoundException in the logs on one node in the cluster.
How can I fix this?
nodetool repair doesn't seem to work in this case.
Thank you.
2014 20:49, "Batranut Bogdan" wrote:
Hello,
>
>
>Yes for the first query the server can be slow but no matter what is should
>not take 10 seconds to get one key from a column family. I can see this
>happening if I have times like 20 ms for some queries and let's
Hello,
Yes for the first query the server can be slow but no matter what is should not
take 10 seconds to get one key from a column family. I can see this happening
if I have times like 20 ms for some queries and let's say 300 ms for uncached
ones. But I have responses that take from 8 to 20 ms
move 'timestam' into the
partition key like this (using your notation):
PK((key String , timestam int), column1 string, col2 string) , list1 , list 2,
list 3 .
Now the select query you showed should execute more consistently.
But of course something else might break...!
ml
On Fri
uite understand your reasoning here:
> (I know that there is a lot of heap but I also have write heavy tasks and I
>want them to get into mem fast) .
So, I would try with default cassandra-env.sh JVM params too
From: Batranut Bogdan
Reply-To: "user@cassandra.apache.org" , Ba
Ok will try to reduce heap and see what happens. Thanks guys. I' get back with
conclusions.https://overview.mail.yahoo.com?.src=iOS";>Sent
from Yahoo Mail for iPhone
Hello all,
Here is the environment:
I have a 6 node Cassandra cluster. On each node I have:
- 32 G RAM
- 24 G RAM for cassa
- ~150 - 200 MB/s disk speed
- tomcat 6 with axis2 webservice that uses the datastax java driver to make
asynch reads / writes
- replication factor for the keyspace is 3
(
ful machine that can keep
the GC pauses low.
>
>Sent from my iPhone
>
>On Mar 12, 2014, at 7:11 PM, Edward Capriolo wrote:
>
>
>That is too much ram for cassandra make that 6g to 10g.
>>
>>The uneven perf could be because your requests do not shard evenly.
>
Hello all,
The environment:
I have a 6 node Cassandra cluster. On each node I have:
- 32 G RAM
- 24 G RAM for cassa
- ~150 - 200 MB/s disk speed
- tomcat 6 with axis2 webservice that uses the datastax java driver to make
asynch reads / writes
- replication factor for the keyspace is 3
All nodes
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