Re: Operation Consideration with Counter Column Families
Thanks Aaron, so will there only be one value for each counter column per sstable just like regular columns? Yes. For some reason I was under the impression that Cassandra keeps a log of all the increments not the actual value. Not as far as I understand. Cheers - Aaron Morton Freelance Cassandra Developer New Zealand @aaronmorton http://www.thelastpickle.com On 6/02/2013, at 11:15 AM, Drew Kutcharian d...@venarc.com wrote: Thanks Aaron, so will there only be one value for each counter column per sstable just like regular columns? For some reason I was under the impression that Cassandra keeps a log of all the increments not the actual value. On Feb 5, 2013, at 12:36 PM, aaron morton aa...@thelastpickle.com wrote: Are there any specific operational considerations one should make when using counter columns families? Performance, as they incur a read and a write. There were some issues with overcounts in log replay (see the changes.txt). How are counter column families stored on disk? Same as regular CF's. How do they effect compaction? None. Cheers - Aaron Morton Freelance Cassandra Developer New Zealand @aaronmorton http://www.thelastpickle.com On 6/02/2013, at 7:47 AM, Drew Kutcharian d...@venarc.com wrote: Hey Guys, Are there any specific operational considerations one should make when using counter columns families? How are counter column families stored on disk? How do they effect compaction? -- Drew
Operation Consideration with Counter Column Families
Hey Guys, Are there any specific operational considerations one should make when using counter columns families? How are counter column families stored on disk? How do they effect compaction? -- Drew
Re: Operation Consideration with Counter Column Families
Are there any specific operational considerations one should make when using counter columns families? Performance, as they incur a read and a write. There were some issues with overcounts in log replay (see the changes.txt). How are counter column families stored on disk? Same as regular CF's. How do they effect compaction? None. Cheers - Aaron Morton Freelance Cassandra Developer New Zealand @aaronmorton http://www.thelastpickle.com On 6/02/2013, at 7:47 AM, Drew Kutcharian d...@venarc.com wrote: Hey Guys, Are there any specific operational considerations one should make when using counter columns families? How are counter column families stored on disk? How do they effect compaction? -- Drew
Re: Operation Consideration with Counter Column Families
Thanks Aaron, so will there only be one value for each counter column per sstable just like regular columns? For some reason I was under the impression that Cassandra keeps a log of all the increments not the actual value. On Feb 5, 2013, at 12:36 PM, aaron morton aa...@thelastpickle.com wrote: Are there any specific operational considerations one should make when using counter columns families? Performance, as they incur a read and a write. There were some issues with overcounts in log replay (see the changes.txt). How are counter column families stored on disk? Same as regular CF's. How do they effect compaction? None. Cheers - Aaron Morton Freelance Cassandra Developer New Zealand @aaronmorton http://www.thelastpickle.com On 6/02/2013, at 7:47 AM, Drew Kutcharian d...@venarc.com wrote: Hey Guys, Are there any specific operational considerations one should make when using counter columns families? How are counter column families stored on disk? How do they effect compaction? -- Drew
