CQL query regarding indexes

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' : 'LZ4Com

Re: Cassandra Secondary Index implementation

Hello First get some understanding about secondary indexes. http://www.datastax.com/docs/1.1/ddl/indexes Thanks. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Cassandra-Secondary-Index-implementation-tp7589792p7589906.html Sent from the cas

Re: Decommission nodes starts to appear from one node (1.0.11)

Thanks. This is kind of a expert advice for me. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Decommission-nodes-starts-to-appear-from-one-node-1-0-11-tp7587842p7587876.html Sent from the cassandra-u...@incubator.apache.org mailing list archi

Re: Decommission nodes starts to appear from one node (1.0.11)

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. -- View this message in context: http://cassand

Re: Upgrade from 1.0.11 to 1.2.X

Thanks Aaron for the reply. I will need to upgrade 1.0.X to 1.1.X first. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Upgrade-from-1-0-11-to-1-2-X-tp7587786p7587825.html Sent from the cassandra-u...@incubator.apache.org mailing list archive a

Re: Upgrade from 1.0.11 to 1.2.X

Thanks for your short answer. It explains lot. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Upgrade-from-1-0-11-to-1-2-X-tp7587786p7587824.html Sent from the cassandra-u...@incubator.apache.org mailing list archive at Nabble.com.

Re: Upgrade from 1.0.11 to 1.2.X

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 -- View this message in context

Upgrade from 1.0.11 to 1.2.X

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 -- View this message in context: http://cassa

Re: Need help in updating metadata of an existing column family

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 wrote: > Hi, > > I have an existing column family that is cre

How to change the seed node Cassandra 1.0.11

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. -- View this message in context: http://cassandra-user-incubat

Re: How to purge the Hinted data from Cassandra 1.0.11

I managed to delete the hints from JConsole by using HintedHadOffManager MBean. Thanks. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/How-to-purge-the-Hinted-data-from-Cassandra-1-0-11-tp7581614p7581641.html Sent from the cassandra-u...@incub

How to purge the Hinted data from Cassandra

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 -- View this message in context: http://cassandra

One Cassandra 1.0.11 node continuously doing the hint hand off

safely ignore?? Thanks /Roshan -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/One-Cassandra-1-0-11-node-continuously-doing-the-hint-hand-off-tp7581599.html Sent from the cassandra-u...@incubator.apache.org mailing list archive at Nabble.com.

Re: Mixed cluster node with version 1.1.2 and 1.0.6 gives errors

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 -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Mixed-cluster-node-with-version-1-1

Mixed cluster node with version 1.1.2 and 1.0.6 gives errors

(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) Any thoughts?? /Roshan -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Mixed-cluster

Cassandra 1.0.6 nodetool drain gives lots of batch_mutate exceptions

should I need to do the drain without these exceptions? Thanks /Roshan -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Cassandra-1-0-6-nodetool-drain-gives-lots-of-batch-mutate-exceptions-tp7581497.html Sent from the cassandra-u

Error occures while doing the draing Cassandra 1.1.2

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. org.apache.thrift

Cassandra Hector failover + load balancing not as expected with version 1.0-5

r); Other than the above 2 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 fa

Re: An experiment using Spring Data w/ Cassandra (initially via JPA/Kundera)

Hi Brian This is basically a wonderful news for me, because we are using lots of spring support in the project. Good luck and keep post. Cheers /Roshan. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/An-experiment-using-Spring-Data-w

Re: Concerns about Cassandra upgrade from 1.0.6 to 1.1.X

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. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Concerns-about

Concerns about Cassandra upgrade from 1.0.6 to 1.1.X

plications). 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 --

Re: which high level Java client

Hello We are using Hector and it perfectly matching to our case. https://github.com/hector-client/hector -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/which-high-level-Java-client-tp7580842p7580844.html Sent from the cassandra-u...@incubator.a

Cassandra 1.0.6 data flush query

_mb: 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 -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Cassandra-1-0-6-data-flush-query-tp7580733.html S

Re: Subscribe

On Tue, Jun 12, 2012 at 8:56 PM, Jayesh Thakrar wrote: > Subscribe > Attempt unsuccessful, ** Was expecting a voice-command in mp3 format **

Re: Cassandra upgrade from 0.8.1 to 1.1.0

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. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Cassandra-upgrade-from-0-8-1-to-1-1-0-tp7580198p7580210

Re: Cassandra 0.8.5: Column name mystery in create column family command

he Cassandra schema changes done. Why am I seeing the error only now with this particular CF? Cheers, Roshan

Re: Cassandra 0.8.5: Column name mystery in create column family command

:32 PM, "Roshan Dawrani" 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", i

Cassandra 0.8.5: Column name mystery in create column family command

ype: KEYS Does anyone see why this must be happening? I have created many such column families before and never run into this issue. -- Roshan http://roshandawrani.wordpress.com/

Cassandra 0.8.5: Column name mystery in create column family command

ype: KEYS Does anyone see why this must be happening? I have created many such column families before and never run into this issue. -- Roshan http://roshandawrani.wordpress.com/

Cassandra 1.0.6 multi data center read question

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 -- View this message in context: http://cassandra-user-incubator-apach

Re: Cassandra backup queston regarding commitlogs

Many thanks Aaron. I will post a support issue for them. But will keep the snapshot + incremental backups + commitlogs to recover any failure situation. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Cassandra-backup-queston-regarding-commitlogs-

Re: Cassandra backup queston regarding commitlogs

http://www.datastax.com/docs/1.0/operations/backup_restore -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Cassandra-backup-queston-regarding-commitlogs-tp7508823p7515679.html Sent from the cassandra-u...@incubator.apache.org mailing list archive

Re: Cassandra backup queston regarding commitlogs

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 -- View this

Re: Cassandra backup queston regarding commitlogs

the same keys with values? Appreciate your reply on this. Kind Regards /Roshan -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/deleted-tp7508823p7512499.html Sent from the cassandra-u...@incubator.apache.org mailing list archive at Nabble.com.

Cassandra backup question regarding commitlogs

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 data/index/e

Re: Cassandra backup queston regarding commitlogs

Tamar Please don't jump to other users discussions. If you want to ask any issue, create a new one, please. Thanks. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Cassandra-backup-question-regarding-commitlogs-tp7508823p7511913.html Sent from

Cassandra backup queston regarding commitlogs

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 data/index/e

Re: Cassndra 1.0.6 GC query

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. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Cassndra-1-0-6-GC-query-tp73

Cassndra 1.0.6 GC query

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 compact

Re: Best suitable value for flush_largest_memtables_at

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: W

Best suitable value for flush_largest_memtables_at

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 t

CQL query issue when fetching data from Cassandra

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 : KEYS

Re: Got fatal exception after upgrade to 1.0.7 from 1.0.6

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. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Got-fatal-exception-after-upgrade-to-

Got fatal exception after upgrade to 1.0.7 from 1.0.6

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] java.lang.NullPointerEx

Multiple data center nodetool ring output display 0% owns

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 Addre

Lots of 0 Bytes tmp Data/Index files remain in data folder

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 tm

Re: Cassandra 1.0.6 multi data center question

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 n

Re: Cassandra 1.0.6 multi data center question

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? -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Cassandra-1-0-6-multi-data-center-

Re: Cassandra 1.0.6 multi data center question

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}; -- View this messa

Cassandra 1.0.6 multi data center question

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% 567137278201564074289847793

Re: WARN [Memtable] live ratio

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 [Gossi

Re: WARN [Memtable] live ratio

Thanks for the explanation. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/WARN-Memtable-live-ratio-tp7238582p7242021.html Sent from the cassandra-u...@incubator.apache.org mailing list archive at Nabble.com.

Re: WARN [Memtable] live ratio

Exactly, I am also getting this when server moving idle to high load. May be Cassandra Experts can help to us. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/WARN-Memtable-live-ratio-tp7238582p7238603.html Sent from the cassandra-u...@incubator.a

WARN [Memtable] live ratio

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. -- View this message in context: h

Re: SSTable compaction issue in our system

se let automatic 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 compa

Re: How to speed up "Waiting for schema agreement" for a single node Cassandra cluster?

ll the keys and then deleting 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

Re: [ANN] Usergrid, Open Source Mobile Data Platform built on Cassandra

/group/usergrid-user > > It's still a work-in-progress and there's a lot in there that still > needs to be documented. > > Hope 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

Re: Performance degradation observed through embedded cassandra server - pointers needed

l blog post here about it: "Grails, Cassandra: Giving each test a clean DB to work with<http://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

Re: Performance degradation observed through embedded cassandra server - pointers needed

. I am not sure what I will gain there in terms of performance. I was hoping data truncation leaving schema there would be faster than that. -- Roshan Blog: http://roshandawrani.wordpress.com/ Twitter: @roshandawrani <http://twitter.com/roshandawrani> Skype: roshandawrani

Performance degradation observed through embedded cassandra server - pointers needed

n, 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. -- Roshan Blog: http://roshandawrani.wordpres

Re: segment fault with 0.8.5

ently did 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 cassandr

Re: Error in upgrading cassandra to 0.8.5

On Tue, Sep 13, 2011 at 7:03 PM, Jonathan Ellis 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. -- Roshan Blog: http://roshandawrani.wordpress.com/ Twitter: @roshandawrani <http://tw

Re: Error in upgrading cassandra to 0.8.5

han Ellis wrote: > Just remove the row cache files. > > On Tue, Sep 13, 2011 at 8:23 AM, Roshan Dawrani > 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 en

Error in upgrading cassandra to 0.8.5

at org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:341) at org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:97) - -- Roshan

Re: Cassandra -f problem

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 wrote: > Hi, Roshan. This is great support, amazing support; not used to it :) > > Thanks for the reply. > > Well I think java is installed correct

Re: Cassandra -f problem

7 -ea not found" preventing cassandra from run the process README >> file says it is suppose to start. >> >> Any help would be very appreciated. >> >> Thnx! >> >> -- Roshan Blog: http://roshandawrani.wordpress.com/ Twitter: @roshandawrani <http://twitter.com/roshandawrani> Skype: roshandawrani

Re: [RELEASE] Apache Cassandra 0.8.5 released

ll :-( rgds, Roshan

Re: [RELEASE] Apache Cassandra 0.8.5 released

now[3] if you were to > encounter > any problem. > > Have fun! > > > [1]: http://goo.gl/A5YmF (CHANGES.txt) > [2]: http://goo.gl/J5Iix (NEWS.txt) > [3]: https://issues.apache.org/jira/browse/CASSANDRA > -- Roshan Blog: http://roshandawrani.wordpress.com/ Twitter: @roshandawrani <http://twitter.com/roshandawrani> Skype: roshandawrani

Re: [RELEASE] Apache Cassandra 0.8.5 released

tp://goo.gl/A5YmF (CHANGES.txt) > [2]: http://goo.gl/J5Iix (NEWS.txt) > [3]: https://issues.apache.org/jira/browse/CASSANDRA > -- Roshan Blog: http://roshandawrani.wordpress.com/ Twitter: @roshandawrani <http://twitter.com/roshandawrani> Skype: roshandawrani

Re: Any tentative data for 0.8.5 release?

On Wed, Sep 7, 2011 at 9:15 PM, Jeremy Hanna wrote: > The voting started on Monday and is a 72 hour vote. So if there aren't any > problems that people find, it should be released sometime Thursday (7 > September). > Great. Thanks for quick info. Looking forward to it. --

Any tentative data for 0.8.5 release?

Hi, Quick check: is there a tentative date for release of Cassandra 0.8.5? Thanks. -- Roshan Blog: http://roshandawrani.wordpress.com/ Twitter: @roshandawrani <http://twitter.com/roshandawrani> Skype: roshandawrani

Re: Cassandra 0.8.4 - doesn't support defining keyspaces in cassandra.yaml?

ties" Our is a Grails 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? -- Roshan Blog: http://roshandawrani.wordpress.com/

Cassandra 0.8.4 - doesn't support defining keyspaces in cassandra.yaml?

from cassandra.yaml. Is it not possible to do the same with Cassandra / Hector 0.8.x? Can someone throw some light please? Thanks. -- Roshan Blog: http://roshandawrani.wordpress.com/ Twitter: @roshandawrani <http://twitter.com/roshandawrani> Skype: roshandawrani

Re: Dropping a built in secondary index on a CF

built-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? -- Roshan Blog: http://roshandawrani.wordpress.com/ Twitter: @roshandawrani <http://twitter.com/roshandawrani> Skype: roshandawrani

Dropping a built in secondary index on a CF

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. -- Roshan Blog: http://roshandawrani.wordpress.com/ Twitter: @roshandawrani <http://twitter.com/roshandawrani> Skype: roshandawrani

Re: How to change the seed node used to discover other nodes in the ring?

On Thu, Apr 21, 2011 at 9:30 PM, Nate McCall 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 a little in t

Re: How to change the seed node used to discover other nodes in the ring?

On Thu, Apr 21, 2011 at 9:10 PM, Nate McCall 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 details is

How to change the seed node used to discover other nodes in the ring?

stem table? How can I change it now? Through JMX? Some specific command? -- Roshan Blog: http://roshandawrani.wordpress.com/ Twitter: @roshandawrani <http://twitter.com/roshandawrani> Skype: roshandawrani

Re: Any way to get different unique time UUIDs for the same time value?

t same > >>> timestamp component, rather than avoiding duplicates in the timestamp > >>> the way UUIDGen currently does. The answer to that is that you could > >>> take a look at the code for the UUIDGen class and create your own > >>> version that

Any way to get different unique time UUIDs for the same time value?

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. -- Roshan Blog: http://roshandawrani.wo

Re: mutator.execute() timings - big variance noted - pointers needed on understanding/improving it

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 wrote: > http://wiki.apache.org/cassandra/FAQ#slows_down_after_lotso_inserts > > <http://wiki.apache.org/c

mutator.execute() timings - big variance noted - pointers needed on understanding/improving it

% 1075 99% 1215 100% 4442 -- Roshan Blog: http://roshandawrani.wordpress.com/ Twitter: @roshandawrani <http://twitter.com/roshandawrani> Skype: roshandawrani

Re: cant seem to figure out secondary index definition

On Sun, Mar 6, 2011 at 4:54 PM, Roshan Dawrani wrote: > > > -- > keyspaces: > - name: firstname > validator_class: UTF8Type >

Re: cant seem to figure out secondary index definition

-- Regards, Roshan On Sun, Mar 6, 2011 at 4:34 PM, Jürgen Link wrote: > Hi Roshan, > could you please post a small sample from your yaml file? > As documentation of i

Re: cant seem to figure out secondary index definition

On Fri, Mar 4, 2011 at 11:52 PM, Jürgen Link wrote: > 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 embedded cassandra instan

Re: Is it possible to get list of row keys?

t (as described previously in this thread) -- Roshan Blog: http://roshandawrani.wordpress.com/ Twitter: @roshandawrani <http://twitter.com/roshandawrani> Skype: roshandawrani

Re: Is it possible to get list of row keys?

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 wrote: > yes but be aware that the keys will not in the "right order". > > Bye, > Norman > > 2011/2/2

Re: Is it possible to get list of row keys?

On Wed, Feb 23, 2011 at 7:17 PM, Ching-Cheng Chen 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. > Beware that since s

Re: Is it possible to get list of row keys?

of slices. > > Thank you for your help. > > -- > http://twitter.com/jpartogi > -- Roshan Blog: http://roshandawrani.wordpress.com/ Twitter: @roshandawrani <http://twitter.com/roshandawrani> Skype: roshandawrani

Re: Updating/inserting into multiple column families using one mutator batch

yet. What 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 wrote: > It is fine to use multiple coumn families via batch_mutate. The size > of the batch itself will take some tunning. In wh

Updating/inserting into multiple column families using one mutator batch

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

Re: indexedslicesQuery class error

gt; stringSerializer.toByteBuffer("UT")); > > indexedSlicesQuery.setColumnFamily("users"); > indexedSlicesQuery.setStartKey(""); > QueryResult> result = > indexedSlicesQuery.execute(); > > It shows the error > > > > The method addGt

Re: indexedslicesQuery class error

You didn't see the previously given link? @see: https://groups.google.com/group/hector-users/browse_thread/thread/520c5332dedfca4a 2011/2/17 Raoyixuan (Shandy) > But my requirement is get the data by birth_date and state , how to > achieve it by hector client? > > > >

Re: indexedslicesQuery class error

etStartKey(""); > QueryResult> result = > indexedSlicesQuery.execute(); > > It shows the error: > > The method addGtEqual IndexedSlicesQuery is not applicable for the > arguments(String,String) > > > > > > > > *From:* Roshan Dawrani [mailto:

Re: indexedslicesQuery class error

AWEI, which > is intended only for the person or entity whose address is listed above. > Any use of the > information contained herein in any way (including, but not limited to, > total or partial > disclosure, reproduction, or dissemination) by persons other than the > intended >

Re: Slow network writes

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 wrote: > > Dude, are you asking me to unsubscribe? > > -- > View this message in context: > http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Slow-n

Re: changing JMX port in 0.7

:-) On Wed, Feb 2, 2011 at 10:14 PM, Sasha Dolgy 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 wrote: > >> An instance of Cassandra starts and is listening on the ports described >> below: >> Port De

Re: cassandra as session store

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

Re: Cassandra events next week around Strata

HelloNo India-based Cassandra / NoSQL events? :-( :-) On Sat, Jan 29, 2011 at 8:31 AM, Jonathan Ellis 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: > http://str

Re: get_range_slices getting deleted rows

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 wrote: > thanks, > so I need to check the returned slice for the key to verify that is a valid > row

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