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From Dane Miller <d...@optimalsocial.com>
Subject Re: unexplained hinted handoff
Date Wed, 17 Apr 2013 00:29:06 GMT
On Sun, Apr 14, 2013 at 11:28 AM, aaron morton <aaron@thelastpickle.com> wrote:
>>  If hints are being stored, doesn't that imply DOWN nodes, and why don't I
>> see that in the logs?
>
> Hints are stored for two reasons. First if the node is down when the write
> request starts, second if the node does not reply to the coordinator before
> rpc_timeout. If you are not seeing dropped write messages it may indicate
> network issues between the nodes.

Very helpful! I increased the timeouts for *_request_timeout settings
in cassandra.yaml and no longer see HH in the logs.  Still not sure
why I saw logs about dropped reads, and not dropped mutations.

Anyhow, big timeouts helps in this case.  Thanks :)

Dane

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