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From Jake Luciani <jak...@gmail.com>
Subject Re: Is the secondary index re-built under compaction?
Date Tue, 17 Apr 2012 14:05:21 GMT
Well, the since the secondary indexes are themselves column families they
too are compacted along with everything else.

On Tue, Apr 17, 2012 at 10:02 AM, Maxim Potekhin <potekhin@bnl.gov> wrote:

>  Thanks Jake. Then I am definitely seeing weirdness, as there are tons of
> "pending tasks" in compaction stats, and tons of index files created in the
> data directory. Plus it does tell me that it is building the secondary
> index,
> and that seems to be happening at an amazingly glacial pace.
>
> I have 2 CFs there, with multiple secondary indexes. I'll try
> to compact the CF one by one, reboot and see if that helps.
>
> Maxim
>
>
>
> On 4/17/2012 9:53 AM, Jake Luciani wrote:
>
> No, the indexes are not rebuilt every compaction.  Only if you manually
> rebuild or bootstrap a new node does it use compaction manager to rebuild.
>
> On Tue, Apr 17, 2012 at 9:47 AM, Maxim Potekhin <potekhin@bnl.gov> wrote:
>
>>  Thanks Aaaron. Just to be clear, every time I do a compaction,
>> I rebuild all indexes from scratch. Right?
>>
>> Maxim
>>
>>
>>
>> On 4/17/2012 6:16 AM, aaron morton wrote:
>>
>> Yes secondary index builds are done via the compaction manager.
>>
>>  Cheers
>>
>>     -----------------
>> Aaron Morton
>> Freelance Developer
>> @aaronmorton
>> http://www.thelastpickle.com
>>
>>  On 17/04/2012, at 1:06 PM, Maxim Potekhin wrote:
>>
>>  I noticed that "nodetool compactionstats" shows the building of the
>> secondary index while
>> I initiate compaction. Is this to be expected? Cassandra version 0.8.8.
>>
>> Thank you
>>
>> Maxim
>>
>>
>>
>>
>
>
>  --
> http://twitter.com/tjake
>
>
>


-- 
http://twitter.com/tjake

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