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Posted to user@cassandra.apache.org by Kanwar Sangha <ka...@mavenir.com> on 2013/09/18 22:43:30 UTC

nodetool tpstats

Hi - During a write heavy load, the tpstats show the following -

Message type           Dropped
RANGE_SLICE                  0
READ_REPAIR                  0
BINARY                       0
READ                         0
MUTATION                 65570
_TRACE                       0
REQUEST_RESPONSE         10929


Mutation means that the inter-node messages are dropped as a throttling mechanism..what does the request_response signify ? That the node accepted the message but was not able to process it in the timeout ?

Thanks,
Kanwar

Re: nodetool tpstats

Posted by Tyler Hobbs <ty...@datastax.com>.

On Wed, Sep 18, 2013 at 3:43 PM, Kanwar Sangha <ka...@mavenir.com> wrote:

> what does the request_response signify ? That the node accepted the
> message but was not able to process it in the timeout ?****
>
> **
>

Yes, I'm pretty sure it's referring to requests that the node dropped when
acting as a coordinator (due to hitting the timeout).

-- 
Tyler Hobbs
DataStax <http://datastax.com/>