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From datastax <jlacefi...@datastax.com>
Subject Re: High read latency after data volume increased
Date Fri, 09 Jan 2015 14:03:11 GMT
Hello

  You may not be experiencing versioning issues.   Do you know if compaction is keeping up
with your workload?  The behavior described in the subject is typically associated with compaction
falling behind or having a suboptimal compaction strategy configured.   What does the output
of nodetool cfhistograms <keyspace> <table> look like for a table that is experiencing
this issue?  Also, what type of disks are you using on the nodes?

Sent from my iPad

> On Jan 9, 2015, at 8:55 AM, Brian Tarbox <briantarbox@gmail.com> wrote:
> 
> C* seems to have more than its share of "version x doesn't work, use version y " type
issues....
> 
>> On Thu, Jan 8, 2015 at 2:23 PM, Robert Coli <rcoli@eventbrite.com> wrote:
>>> On Thu, Jan 8, 2015 at 11:14 AM, Roni Balthazar <ronibalthazar@gmail.com>
wrote:
>>> We are using C* 2.1.2 with 2 DCs. 30 nodes DC1 and 10 nodes DC2.
>> 
>> https://engineering.eventbrite.com/what-version-of-cassandra-should-i-run/
>> 
>> 2.1.2 in particular is known to have significant issues. You'd be better off running
2.1.1 ...
>> 
>> =Rob
> 
> 
> 
> -- 
> http://about.me/BrianTarbox

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