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From Ja Sam <ptrstp...@gmail.com>
Subject Re: Many pending compactions
Date Mon, 16 Feb 2015 21:47:03 GMT
One think I do not understand. In my case compaction is running
permanently. Is there a way to check which compaction is pending? The only
information is about total count.

On Monday, February 16, 2015, Ja Sam <ptrstpppp@gmail.com> wrote:

> 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> 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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