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https://issues.apache.org/jira/browse/CASSANDRA-2045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13048625#comment-13048625
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Nicholas Telford edited comment on CASSANDRA-2045 at 6/13/11 4:18 PM:
----------------------------------------------------------------------
* Rebased patch to latest trunk.
* Changed serialization to use cached RowMutation.getSerializedBuffer
I agree with your thoughts on removing the old-style hinting, although I
haven't given much thought to the impact on compatibility. As far as I can
tell, using my patch removing the old style hinting would be a matter of
removing {{hintedMutation.apply();}} from {{RowMutationVerbHandler@63}}. For
now, I've left it as-is.
I tried to keep to the CodingStyle as much as possible; is there anything
specific you noticed that was wrong?
Btw, the tests I promised have been delayed by nightmarish work-schedule. I'll
try to get them sorted ASAP though.
was (Author: nicktelford):
* Rebased patch to latest trunk.
* Changed serialization to use cached RowMutation.getSerializedBuffer
I agree with your thoughts on removing the old-style hinting, although I
haven't given the impact on compatibility. As far as I can tell, using my patch
removing the old style hinting would be a matter of removing
{{hintedMutation.apply();}} from {{RowMutationVerbHandler@63}}. For now, I've
left it as-is.
I tried to keep to the CodingStyle as much as possible; is there anything
specific you noticed that was wrong?
Btw, the tests I promised have been delayed by nightmarish work-schedule. I'll
try to get them sorted ASAP though.
> Simplify HH to decrease read load when nodes come back
> ------------------------------------------------------
>
> Key: CASSANDRA-2045
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2045
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Chris Goffinet
> Assignee: Nicholas Telford
> Fix For: 1.0
>
> Attachments: CASSANDRA-2045-simplify-hinted-handoff-001.diff,
> CASSANDRA-2045-simplify-hinted-handoff-002.diff
>
>
> Currently when HH is enabled, hints are stored, and when a node comes back,
> we begin sending that node data. We do a lookup on the local node for the row
> to send. To help reduce read load (if a node is offline for long period of
> time) we should store the data we want forward the node locally instead. We
> wouldn't have to do any lookups, just take byte[] and send to the destination.
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