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Nicholas Telford commented on CASSANDRA-2045: --------------------------------------------- Ok, that makes sense. I've implemented this in my tree (albeit with an additional "version" column to store the serialization version). I won't post the patch yet as I need to go through it all and ensure it's correct and clean it up a little. As an aside: while digging into RowMutationSerializer, I noticed that the "version" passed to deserialize() is ignored - is this intentional? > 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: > 0001-Changed-storage-of-Hints-to-store-a-serialized-RowMu.patch, > 0002-Refactored-HintedHandoffManager.sendRow-to-reduce-co.patch, > 0003-Fixed-some-coding-style-issues.patch, > 0004-Fixed-direct-usage-of-Gossiper.getEndpointStateForEn.patch, > 0005-Removed-duplicate-failure-detection-conditionals.-It.patch, > 0006-Removed-handling-of-old-style-hints.patch, 2045-v3.txt, > 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. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira