Practical use of counters in the industry

Hi Folks, Have any of you come across blogs that describe how companies in the industry are using Cassandra counters practically. Thanks in advance. Regards, Rajath Rajath Subramanyam

Re: Practical use of counters in the industry

Thanks Ken. Any other use cases where counters are used apart from Rainbird ? Rajath Subramanyam On Thu, Dec 18, 2014 at 5:12 PM, Ken Hancock ken.hanc...@schange.com wrote: Here's one from Twitter... http://www.slideshare.net/kevinweil/rainbird-realtime-analytics

Cassandra SSTables' metadata and corruption

bigger data corruption in the Data.db component ? Thanks in advance for your thoughts about this. Thank you ! Regards, Rajath -------- Rajath Subramanyam

Regarding cassandra-stress results

:0.8, WRITE:0.8] latency 99th percentile : 1.2 [READ:1.2, WRITE:1.2] latency 99.9th percentile : 8.8 [READ:8.9, WRITE:9.0] latency max : 448.7 [READ:162.3, WRITE:448.7] Thanks in advance. - Rajath Rajath Subramanyam

Re: Regarding cassandra-stress results

I opened CASSANDRA-11352 <https://issues.apache.org/jira/browse/CASSANDRA-11352> to add this minor improvement to the cassandra-stress tool where the units are part of the output. - Rajath ---- Rajath Subramanyam On Mon, Mar 14, 2016 at 3:43 PM, John Wong <

Autobootstrap in Cassandra

Hi Cassandra users, Is there a way to find if auto_bootstrap is set to false on a Cassandra node if we didn't know the location of the cassandra.yaml or the cassandra installation directory (for e.g., through means like JMX, etc) ? Thank you ! Regards, Rajath Rajath

Re: What is the merit of incremental backup

Hi Satoshi, Incremental Backup if set to True, copies SSTables to the backup folder as soon as a SSTable is flushed to disk. Hence these backed up SSTables miss out on the opportunity to go through compaction. Does that explain the longer time ? - Rajath Rajath

Re: Verify cassandra backup and restore in C * 2.1

Hi Indranil, One approach is to do a row count on the original source table and the table that is restored from backup. How are you backing up data ? I am assuming you are issuing snapshot commands (either incremental or otherwise). I hope this helps. - Rajath Rajath

Replacing a dead node in a live Cassandra Cluster

How do I recover from this error message ? ---- Rajath Subramanyam

Re: sstableloader question

Hi Osman, You cannot restart the streaming only to the failed nodes specifically. You can restart the sstableloader job itself. Compaction will eventually take care of the redundant rows. - Rajath Rajath Subramanyam On Sun, Oct 9, 2016 at 7:38 PM, Adam Hutson

Cassandra snapshot JMX commands

takeColumnFamilySnapshot < ks_name> - Issuing snapshot to multiple column families spanning keyspaces: Nodetool command: nodetool snapshot -kc .,.,.,. -t Can anybody help me with JMX equivalent of the above command ? Thanks in advance. Regards, Rajath ----

Re: Anticompaction Question

Rajath ---- Rajath Subramanyam On Tue, Oct 25, 2016 at 4:56 PM, Anubhav Kale <anubhav.k...@microsoft.com> wrote: > Hello, > > > > If incremental repairs are enabled, there is logic in every compaction > strategy to make sure not to mix repaired and unrepaired SS Tables. >

Re: Backup restore with a different name

at Datos.io. Regards, Rajath -------- Rajath Subramanyam On Wed, Nov 2, 2016 at 3:10 PM, Jens Rantil <jens.ran...@tink.se> wrote: > Bryan, > > On Wed, Nov 2, 2016 at 11:38 AM, Bryan Cheng <br...@blockcypher.com> > wrote: > >> do you mean restoring the clus

Re: [Marketing Mail] Re: sstableloader question

How many sstables are you trying to load ? Running sstableloaders in parallel will help. Did you try setting the "-t" parameter and see if you are getting the expected throughput ? - Rajath -------- Rajath Subramanyam On Mon, Oct 10, 2016 at 2:02 PM, Osman YO

Set of SSTables have the same set of ancestors

ot see any "anticompaction" words in the log file. Thank you ! Regards, Rajath -------- Rajath Subramanyam

Re: Single cluster node restore

ore the corruption was introduced. For this, you will have to devise a repair-free recovery strategy. Hope this helps. Thank you ! Regards, Rajath ---- Rajath Subramanyam On Fri, Dec 2, 2016 at 10:19 AM, Anuj Wadehra <anujw_2...@yahoo.co.in> wrote: > Hi Petr, > > If dat

SSTable Ancestors information in Cassandra 3.0.x

11e6ac23e7ccf62f494b]$ My question, how can I get this information in C* 3.0.x ? Thank you ! Regards, Rajath -------- Rajath Subramanyam

Re: SSTable Ancestors information in Cassandra 3.0.x

Thanks, Jeff. Did all the internal tasks and the compaction tasks move to a timestamp-based approach? Regards, Rajath Rajath Subramanyam On Thu, Mar 23, 2017 at 2:12 PM, Jeff Jirsa <jji...@gmail.com> wrote: > That information was removed, because it was rea

Re: SSTable Ancestors information in Cassandra 3.0.x

Thanks Jeff. Rajath Subramanyam On Thu, Mar 23, 2017 at 4:50 PM, Jeff Jirsa <jji...@gmail.com> wrote: > The ancestors were used primarily to clean up leftovers in the case that > cassandra was killed right as compaction finished, where the > source/o

Nodetool refresh v/s sstableloader

any help in advance. Thanks, Rajath Rajath Subramanyam

Re: [EXTERNAL] Re: Nodetool refresh v/s sstableloader

Thank you, everyone, for responding. Rajath Subramanyam On Thu, Aug 30, 2018 at 8:38 AM Carl Mueller wrote: > - Range aware compaction strategy that subdivides data by the token range > could help for this: you only bakcup data for the primar