Hi
Cassandra - 2.0.8
DataStax driver - 2.0.2
I have create a keyspace and a table with indexes like below.
CREATE TABLE services.messagepayload (
partition_id uuid,
messageid bigint,
senttime timestamp,
PRIMARY KEY (partition_id)
) WITH compression =
{ 'sstable_compression' :
Hello
First get some understanding about secondary indexes.
http://www.datastax.com/docs/1.1/ddl/indexes
Thanks.
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I found this bug, seems it is fixed. But I can see that in my situation, the
decommission node still I can see from the JMX console LoadMap attribute.
Might this is the reason why hector says not enough replica??
Experts, any thoughts??
Thanks.
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Thanks. This is kind of a expert advice for me.
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)
at
org.apache.cassandra.service.StorageProxy.writeHintForMutation(StorageProxy.java:581)
at
org.apache.cassandra.service.StorageProxy$5.runMayThrow(StorageProxy.java:555)
at
org.apache.cassandra.service.StorageProxy$HintRunnable.run(StorageProxy.java:1643)
... 6 more
Any reason?
/Roshan
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Thanks for your short answer. It explains lot.
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Thanks Aaron for the reply. I will need to upgrade 1.0.X to 1.1.X first.
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Hi
Haven't visit to this forum couple of months and want to upgrade our current
production Cassandra cluster (4 nodes 1.0.11) to 1.2.X latest versions.
Is this kind of the straight upgrade or different?
Thanks Regards
/Roshan
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Is it possible to update the column-metadata of a column family definition
programmatically? If yes, can someone please point me to the right classes
to use?
Thanks.
On Thu, Nov 29, 2012 at 3:58 PM, Roshan Dawrani roshandawr...@gmail.comwrote:
Hi,
I have an existing column family
Hi
In our production, we have 3 Cassandra 1.0.11 nodes.
Due to a reason, I want to move the current seed node to another node and
once seed node change, the previous node want to remove from cluster.
How can I do that?
Thanks.
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I managed to delete the hints from JConsole by using HintedHadOffManager
MBean.
Thanks.
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for token: 113427455640312814857969558651062452224 with IP: /10.50.50.111
2012-08-08 08:56:54,383 INFO [HintedHandOffManager] Finished hinted handoff
of 0 rows to endpoint /10.50.50.111
How can I remove this hints from node?
Thanks
/Roshan
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be safely ignore??
Thanks
/Roshan
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Thanks to point me the solution. So that means, I want to upgrade 1.0.6
cluster to 1.0.11 first, then upgrade to 1.1.2 version. Is I am right?
Thanks
/Roshan
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(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Any thoughts??
/Roshan
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Hi
I got the below exception to Cassandra log while doing the *drain* via
*nodetool* operation before shutting down one node in 3 node development
Cassandra 1.1.2 cluster.
2012-07-30 09:37:45,347 ERROR [CustomTThreadPoolServer] Thrift error
occurred during processing of message.
should I need to do the drain without
these exceptions?
Thanks
/Roshan
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statements, I am passing any configuration to hector
to build up the connections.
What I noticed is, every time hector uses zero element from the server list
url and still try to connect to the same server, if it fails.
Could someone help me to solve this hector fail over?
Thanks
/Roshan
Thanks Aaron. My major concern is upgrade node by node. Because currently we
are using 1.0.6 in production and plan is to upgrade singe node to 1.1.2 at
a time.
Any comments?
Thanks.
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).
2. How do we need to do upgrade process? Currently we have 3 node 1.0.6
cluster in production. Can we upgrade node by node? If we upgrade node by
node, will the other 1.0.6 nodes identify 1.1.X nodes without any issue?
Appreciate experts comments on this. Many Thanks.
/Roshan
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Hello
We are using Hector and it perfectly matching to our case.
https://github.com/hector-client/hector
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: 200
in_memory_compaction_limit_in_mb: 16 (from 64MB)
Key cache = 1
Row cache = 0
Could someone please help me on this.
Thanks
/Roshan
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On Tue, Jun 12, 2012 at 8:56 PM, Jayesh Thakrar j_thak...@yahoo.com wrote:
Subscribe
Attempt unsuccessful,
** Was expecting a voice-command in mp3 format **
Hi
Hope this will help to you.
http://www.datastax.com/docs/1.0/install/upgrading
http://www.datastax.com/docs/1.1/install/upgrading
Thanks.
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.
Why am I seeing the error only now with this particular CF?
Cheers,
Roshan
be happening? I have created many such column
families before and never run into this issue.
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-2012 4:32 PM, Roshan Dawrani roshandawr...@gmail.com wrote:
Hi,
I use Cassandra 0.8.5 and am suddenly noticing some strange behavior. I
run a create column family command with some column meta-data and it runs
fine, but when I do describe keyspace, it shows me different column names
for those
a read operation on the production, will that read operation goes to
DR as well? If so can I disable that call?
My primary purpose is to keep the DR upto date and won't to communicate the
production with DR.
Thanks.
/Roshan
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Many thanks Aaron. I will post a support issue for them. But will keep the
snapshot + incremental backups + commitlogs to recover any failure
situation.
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the same keys with values?
Appreciate your reply on this.
Kind Regards
/Roshan
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Many Thanks Aaron.
According to the datastax restore documentation, they ask to remove the
commitlogs before restoring (Clear all files the
/var/lib/cassandra/commitlog (by default)).
In that case better not to follow this step in a server rash situation.
Thanks
/Roshan
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Tamar
Please don't jump to other users discussions. If you want to ask any issue,
create a new one, please.
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Hi
Currently I am taking daily snapshot on my keyspace in production and
already enable the incremental backups as well.
According to the documentation, the incremental backup option will create an
hard-link to the backup folder when new sstable is flushed. Snapshot will
copy all the
Hi
Currently I am taking daily snapshot on my keyspace in production and
already enable the incremental backups as well.
According to the documentation, the incremental backup option will create an
hard-link to the backup folder when new sstable is flushed. Snapshot will
copy all the
Hi Experts
After getting an OOM error in production, I reduce the
-XX:CMSInitiatingOccupancyFraction to .45 (from .75) and
flush_largest_memtables_at to .45 (from .75). But still I am get an warning
message in production for the same Cassandra node regarding OOM. Also reduce
the concurrent
As a configuration issue, I haven't enable the heap dump directory.
Is there another way to find the cause to this and identify possible
configuration changes?
Thanks.
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Thanks Aaron for the indormation.
I increased the VM size to 2.4G from 1.4G. Please check my current CF in
below.
Keyspace: WCache:
Replication Strategy: org.apache.cassandra.locator.SimpleStrategy
Durable Writes: true
Options: [replication_factor:3]
Column Families:
ColumnFamily:
Hi Experts
Under massive write load what would be the best value for Cassandra *
flush_largest_memtables_at* setting? Yesterday I got an OOM exception in
one of our production Cassandra node under heavy write load within 5 minute
duration.
I change the above setting value to .45 and also change
Hi
I am using Cassandra 1.0.6 version and having one column family in my
keyspace.
create column family TestCF
with comparator = UTF8Type
and column_metadata = [
{column_name : userid,
validation_class : BytesType,
index_name : userid_idx,
index_type :
Issue seems related to https://issues.apache.org/jira/browse/CASSANDRA-3677
or exactly same.
I am happy to create another if this is different. Please confirm.
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Hi
I got the below exception to the system.log after upgrade to 1.0.7 from
1.0.6 version. I am using the same configuration files which I used in 1.0.6
version.
2012-02-14 10:48:12,379 ERROR [AbstractCassandraDaemon] Fatal exception in
thread Thread[OptionalTasks:1,5,main]
Hi
I have deployed Cassandra 1.0.6 to a 2 data center and one data center (DC1)
having one node and the other data center (DC2) having two nodes. But when I
do a nodetool ring using one IP, the output says 0% owns of DC1 node. Please
see the output below.
# sh nodetool -h 10.XXX.XXX.XX ring
Thanks Peter for the replies.
Previously it was a typing mistake and it should be getting. I checked
the DC2 (with having replica 0) and noticed that there is no SSTables
created.
I use java hector sample program to insert data to the keyspace. After I
insert a data item, I
1) Login to one of
I have deployed 2 node Cassandra 1.0.6 cluster in production and it running
almost t weeks without any issue. But I can see lots of (more than 90) 0
bytes tmp data and index files in the data directory.
So far this is not a issue for me, but want to know why is that. Seems like
this data/index
Hi All
I have 2 Cassandra data center (DC1=1 node, DC2=2 nodes).
XXX.XXX.XXX.XXX DC2 RAC1Up Normal 44.3 KB
33.33% 0
YYY.YYY.YY.YYY DC1 RAC1Up Normal 48.71 KB
33.33%
I have create the Keyspace like below, but the result is same. All the data
getting replicated to all over the cluster instead of DC1.
create keyspace WSDC
with placement_strategy =
'org.apache.cassandra.locator.NetworkTopologyStrategy' and strategy_options
= {DC1:1,DC2:0};
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Thanks for the reply. But I can see the data setting inserted in DC1 in DC2.
So that means data also getting replicated to DC2.
Want to know how to restrict this?
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It happens to me like this.
I have 2 node Cassandra cluster with one column space. No super columns.
Start server freshly (no commit logs, no SSTables, no saves caches,
basically nothing). Then write process starts (not much write load). See
what my log says:
2012-02-06 13:06:13,598 INFO
Thanks for the explanation.
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compaction do
it's thing.
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 25/01/2012, at 12:47 PM, Roshan wrote:
Thanks for the reply. Is the major compaction not recommended for Cassandra
1.0.6?
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Hi All
Time to time I am seen this below warning in Cassandra logs.
WARN [Memtable] setting live ratio to minimum of 1.0 instead of
0.21084217381985554
Not sure what the exact cause for this and the solution to eliminate this.
Any help is appreciated. Thanks.
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Exactly, I am also getting this when server moving idle to high load. May be
Cassandra Experts can help to us.
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them is the
fastest way
Exactly the thing we also found out (and hence ditched truncate for DB
cleanup between tests):
http://roshandawrani.wordpress.com/2011/09/30/grails-cassandra-giving-each-test-a-clean-db-to-work-with/
.
Worked much better for us this way.
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Blog: http
you'll check it out and find it interesting. Even if it's not
something you'd have use of yourself, please forward this on to people
you know who are trying to build data-rich mobile apps.
Thanks
Ed
--
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Blog: http://roshandawrani.wordpress.com/
Twitter: @roshandawrani http
, Cassandra: Giving each test a clean DB to work
withhttp://roshandawrani.wordpress.com/2011/09/30/grails-cassandra-giving-each-test-a-clean-db-to-work-with/
For
someone in a similar situation, it may present an alternative.
Cheers.
On Fri, Sep 23, 2011 at 1:29 PM, Roshan Dawrani roshandawr
there in terms of performance. I was hoping data truncation leaving schema
there would be faster than that.
--
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Blog: http://roshandawrani.wordpress.com/
Twitter: @roshandawrani http://twitter.com/roshandawrani
Skype: roshandawrani
are in, is anyone aware of any cassandra 0.8.5
cofiguration that can be tweaked to at least get the performance we were
getting with 0.7.2? Exactly after the upgrade, our test execution times have
gone up at least by 60-70%.
Some pointers please?
Thanks.
--
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Blog: http://roshandawrani.wordpress.com
migration of a simple cassandra DB from 0.7.0 to 0.8.5 and
found quite a few differences in structure of cassandra.yaml - the biggest
one that affected us was that cassandra.yaml couldn't hold the defintion
of a keyspace, which we used for embedded cassandra we bring up for testing.
--
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Blog
)
at
org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:341)
at
org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:97)
-
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remove the row cache files.
On Tue, Sep 13, 2011 at 8:23 AM, Roshan Dawrani roshandawr...@gmail.com
wrote:
Hi,
I am in the process of upgrading Cassandra to the recently released
v0.8.5
and facing an issue.
We had two Cassandra environments - one having 0.7.0 and another 0.7.2.
The
upgrade
On Tue, Sep 13, 2011 at 7:03 PM, Jonathan Ellis jbel...@gmail.com wrote:
Just remove the row cache files.
Thanks a lot. The 0.8.5 Cassandra started just fine after getting rid of
those *KeyCache files.
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Hi,
Do you have JAVA_HOME exported? If not, can you export it and retry?
Cheers.
On Tue, Sep 13, 2011 at 8:59 AM, Hernán Quevedo
alexandros.c@gmail.comwrote:
Hi, Roshan. This is great support, amazing support; not used to it :)
Thanks for the reply.
Well I think java is installed
the process README
file says it is suppose to start.
Any help would be very appreciated.
Thnx!
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Twitter: @roshandawrani http://twitter.com/roshandawrani
Skype: roshandawrani
://issues.apache.org/jira/browse/CASSANDRA
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Skype: roshandawrani
application, and log4j configuration is initialized in a
different way, and I do not want to feed embedded server a dummy
log4j.properties file just to satisfy the chain above. Is there any way I
can avoid it?
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Hi,
Quick check: is there a tentative date for release of Cassandra 0.8.5?
Thanks.
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to it.
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from cassandra.yaml. Is
it not possible to do the same with Cassandra / Hector 0.8.x?
Can someone throw some light please?
Thanks.
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Twitter: @roshandawrani http://twitter.com/roshandawrani
Skype: roshandawrani
-in secondary indexes, another Column Family is created
behind the scenes, isn't it? Will that be automatically dropped when I
update the column meta data to drop an index and keep others?
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Hi,
Can someone please tell me how I can drop a built in secondary index on a
column family attribute?
I don't see any direct command to do that in the CLI help.
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Skype: roshandawrani
can I change it
now? Through JMX? Some specific command?
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Twitter: @roshandawrani http://twitter.com/roshandawrani
Skype: roshandawrani
On Thu, Apr 21, 2011 at 9:10 PM, Nate McCall n...@datastax.com wrote:
Roshan,
See https://issues.apache.org/jira/browse/CASSANDRA-1777 for more details.
Hi...I am not sure I fully understand the current state of auto-discovery of
nodes.
The impression I am getting looking at the issue
On Thu, Apr 21, 2011 at 9:30 PM, Nate McCall n...@datastax.com wrote:
It will work as long as thrift and gossip are bound to the same
interface. The discovery server in Hector also uses the
CassandraHostConfigurator#getPort for the port in constructing the
host URL.
Can you please elaborate
, but the problem is that I can get multiple values for
the same timestamp.
So, I am looking for some way where the time portion is same, but the other
UUID half is different so that I can safely store 1 time UUID: 1 value.
Any help there is appreciated.
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% 1075
99% 1215
100% 4442
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Twitter: @roshandawrani http://twitter.com/roshandawrani
Skype: roshandawrani
Hi All,
Thanks for the inputs. I will start investigating this morning with the help
of these.
Regards,
Roshan
On Fri, Mar 11, 2011 at 2:49 AM, aaron morton aa...@thelastpickle.comwrote:
http://wiki.apache.org/cassandra/FAQ#slows_down_after_lotso_inserts
http://wiki.apache.org/cassandra/FAQ
--
Regards,
Roshan
On Sun, Mar 6, 2011 at 4:34 PM, Jürgen Link juergen.l...@googlemail.comwrote:
Hi Roshan,
could you please post a small sample from your yaml file
On Sun, Mar 6, 2011 at 4:54 PM, Roshan Dawrani roshandawr...@gmail.comwrote:
--
keyspaces:
- name: firstname
validator_class: UTF8Type
On Fri, Mar 4, 2011 at 11:52 PM, Jürgen Link juergen.l...@googlemail.comwrote:
Hi Jonathan,
as Roland is already out of office, I'd like to jump in.
Maybe this somehow got lost in the moddle of this thread, indexing works
fine in our real cassandra cluster.
For our test cases, we use an
On Wed, Feb 23, 2011 at 7:17 PM, Ching-Cheng Chen cc...@evidentsoftware.com
wrote:
Actually, if you want to get ALL keys, I believe you can still use
RangeSliceQuery with RP.
Just use setKeys(,) as first batch call.
Then use the last key from previous batch as startKey for next batch.
Yes. But I don't think the retrieving keys in the right order was part of
the original question. :-)
On Wed, Feb 23, 2011 at 7:50 PM, Norman Maurer nor...@apache.org wrote:
yes but be aware that the keys will not in the right order.
Bye,
Norman
2011/2/23 Roshan Dawrani roshandawr
previously in this thread)
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Blog: http://roshandawrani.wordpress.com/
Twitter: @roshandawrani http://twitter.com/roshandawrani
Skype: roshandawrani
of slices.
Thank you for your help.
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Blog: http://roshandawrani.wordpress.com/
Twitter: @roshandawrani http://twitter.com/roshandawrani
Skype: roshandawrani
is that the smaller batches used to get executed
perfectly, but with the combined one, the updates just hang !
I am not pin-pointing the issue anywhere at this time. I just want to know
if it is normal to update multiple CFs in a batch and if there is deadlock
situation that may arise if that is done.
--
Roshan
could be other possibilities for it hanging? It's happening absolutely
consistently.
rgds,
Roshan
On Fri, Feb 18, 2011 at 1:50 AM, Nate McCall n...@datastax.com wrote:
It is fine to use multiple coumn families via batch_mutate. The size
of the batch itself will take some tunning. In what you
, or dissemination) by persons other than the
intended
recipient(s) is prohibited. If you receive this e-mail in error, please
notify the sender by
phone or email immediately and delete it!
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:
The method addGtEqualEpression(String,Long) in the type
IndexedSlicesQueryString,String,Long is not applicable for the
arguments(String,String)
*From:* Roshan Dawrani [mailto:roshandawr...@gmail.com]
*Sent:* Thursday, February 17, 2011 10:37 AM
*To:* user@cassandra.apache.org
*Subject:* Re
:* Roshan Dawrani [mailto:roshandawr...@gmail.com]
*Sent:* Thursday, February 17, 2011 10:48 AM
*To:* user@cassandra.apache.org
*Subject:* Re: indexedslicesQuery class error
addGtEqual???
You are still making the same mistake.
You are now saying that your values are going to be long
I think that was originally a voice command - for whoever happened to hear
it first :-)
On Fri, Feb 4, 2011 at 9:57 AM, buddhasystem potek...@bnl.gov wrote:
Dude, are you asking me to unsubscribe?
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:-)
On Wed, Feb 2, 2011 at 10:14 PM, Sasha Dolgy sdo...@gmail.com wrote:
Silly me. On windows it has to be changed in
$CASSANDRA_HOME/bin/cassandra.bat
On Wed, Feb 2, 2011 at 5:39 PM, Sasha Dolgy sdo...@gmail.com wrote:
An instance of Cassandra starts and is listening on the ports
Please do keep this discussion on the mailing list and not take it offline.
:-)
I will be in the same boat very soon, I think.
It will be great to hear from people who have already gone down this road
and used Cassandra as a session store in a clustered environment.
On Tue, Feb 1, 2011 at 10:56
HelloNo India-based Cassandra / NoSQL events? :-( :-)
On Sat, Jan 29, 2011 at 8:31 AM, Jonathan Ellis jbel...@gmail.com wrote:
Next week is the Strata conference and not one, not two, but five
Cassandra events!
In chronological order:
1. My Strata Cassandra tutorial Tuesday afternoon:
2011/1/25 Wangpei (Peter) peter.wang...@huawei.com
for your 1-node cluster, ANY is the only consistency level that client
may returns BEFORE node write to memory table.
And read op on the node read both the memory table and SSTable.
It real puzzle me. :(
Please don't be puzzled just
No, checking the key will not do.
You will need to check if row.getColumnSlice().getColumns() is empty or not.
That's what I do and it works for me.
On Wed, Jan 26, 2011 at 4:53 AM, Nick Santini nick.sant...@kaseya.comwrote:
thanks,
so I need to check the returned slice for the key to verify
to readers and
flusing, etc is independent of all this and happens in background?
Thanks.
--
Roshan
Blog: http://roshandawrani.wordpress.com/
Twitter: @roshandawrani http://twitter.com/roshandawrani
Skype: roshandawrani
app level issues, and wanted to rule out this one as a possibility.
Cheers,
Roshan
On Tue, Jan 25, 2011 at 9:23 AM, Victor Kabdebon
victor.kabde...@gmail.comwrote:
Hello,
Roshan basically what happens to your one node server is :
Your insert operation is recorded in the commitlog
On Tue, Jan 25, 2011 at 9:32 AM, Victor Kabdebon
victor.kabde...@gmail.comwrote:
Roshan, just remember, what you do on a one node cluster might not be valid
on a 5 node cluster. Depending on the way your insert and query (QUORUM,
ALL, ... ) your data might not be available to get, yet
On Tue, Jan 25, 2011 at 9:57 AM, Victor Kabdebon
victor.kabde...@gmail.comwrote:
As far as I remember, please correct me if I am wrong, on a one node
cluster :
First Commitlog is updated then almost immediatly after order is send to
the memtable to add this new insert. You might have a very
2011/1/25 Wangpei (Peter) peter.wang...@huawei.com
What is the ConsistencyLevel value? Is it ConsistencyLevel.ANY?
I am using Hector 0.7.0-22 and getting keyspace as *
HFactory.createKeyspace()*, which seems to be defaulting the consistency
level to QUORAM for both reads and writes.
Nowhere
-data from
phase 1 server start that is affecting the server startup in 2nd phase?
Any way I can cleanly start the server 2 times in my case? Any other
suggestion? Thanks.
--
Roshan
Blog: http://roshandawrani.wordpress.com/
Twitter: @roshandawrani http://twitter.com/roshandawrani
Skype
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