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From Sameer Farooqui <>
Subject Re: Hinted Handoff
Date Thu, 12 May 2011 22:28:54 GMT
I'm not sure about your first question.

I believe the internal system keyspace holds the hinted handoff information.

In 0.6 and earlier, HintedHandoffManager.sendMessage used to read the entire
row into memory and then send the row back to the client in a single
message. As of 0.7, Cassandra pages within a single hinted row instead
(which improves performance for wide rows).

On Thu, May 12, 2011 at 11:48 AM, Anurag Gujral <>wrote:

> Hi All,
>            I have two questions:
> a) Is there  a way to turn on and off hinted handoff per keyspace rather
> than for multiple keyspaces.
> b)It looks like cassandra stores hinted handoff data in one row.Is it true?
> .Does having one row for hinted handoff implies
> if nodes are down for longer period of time not all the data which needs to
> be replicated will be on the node which is alive.
> Thanks
> Anurag

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