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From Ja Sam <ptrstp...@gmail.com>
Subject Many pending compactions
Date Mon, 16 Feb 2015 21:41:21 GMT
Of couse I made a mistake. I am using 2.1.2. Anyway night build is
available from
http://cassci.datastax.com/job/cassandra-2.1/

I read about cold_reads_to_omit It looks promising. Should I set also
compaction throughput?

p.s. I am really sad that I didn't read this before:
https://engineering.eventbrite.com/what-version-of-cassandra-should-i-run/



On Monday, February 16, 2015, Carlos Rolo <rolo@pythian.com
<javascript:_e(%7B%7D,'cvml','rolo@pythian.com');>> wrote:

> Hi 100% in agreement with Roland,
>
> 2.1.x series is a pain! I would never recommend the current 2.1.x series
> for production.
>
> Clocks is a pain, and check your connectivity! Also check tpstats to see
> if your threadpools are being overrun.
>
> Regards,
>
> Carlos Juzarte Rolo
> Cassandra Consultant
>
> Pythian - Love your data
>
> rolo@pythian | Twitter: cjrolo | Linkedin: *linkedin.com/in/carlosjuzarterolo
> <http://linkedin.com/in/carlosjuzarterolo>*
> Tel: 1649
> www.pythian.com
>
> On Mon, Feb 16, 2015 at 8:12 PM, Roland Etzenhammer <
> r.etzenhammer@t-online.de> wrote:
>
>> Hi,
>>
>> 1) Actual Cassandra 2.1.3, it was upgraded from 2.1.0 (suggested by Al
>> Tobey from DataStax)
>> 7) minimal reads (usually none, sometimes few)
>>
>> those two points keep me repeating an anwser I got. First where did you
>> get 2.1.3 from? Maybe I missed it, I will have a look. But if it is 2.1.2
>> whis is the latest released version, that version has many bugs - most of
>> them I got kicked by while testing 2.1.2. I got many problems with
>> compactions not beeing triggred on column families not beeing read,
>> compactions and repairs not beeing completed.  See
>>
>> https://www.mail-archive.com/search?l=user@cassandra.
>> apache.org&q=subject:%22Re%3A+Compaction+failing+to+trigger%
>> 22&o=newest&f=1
>> https://www.mail-archive.com/user%40cassandra.apache.org/msg40768.html
>>
>> Apart from that, how are those both datacenters connected? Maybe there is
>> a bottleneck.
>>
>> Also do you have ntp up and running on all nodes to keep all clocks in
>> thight sync?
>>
>> Note: I'm no expert (yet) - just sharing my 2 cents.
>>
>> Cheers,
>> Roland
>>
>
>
> --
>
>
>
>

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