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https://issues.apache.org/jira/browse/CASSANDRA-2045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13068776#comment-13068776
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Brandon Williams commented on CASSANDRA-2045:
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It never gets unset, since a participating node can never suddenly become a fat 
client.  However, the Ack and Ack2 verb handlers are applying a new ep state 
every time there is a generation change via Gossiper.applyStateLocally, so it's 
always unset initially when the node starts up.  We should probably make 
hasToken private, since really that is what the Gossiper uses internally to 
determine if it needs to evict a dead fat client.

> 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, 2045-v5.txt, 
> 2045-v6.txt, CASSANDRA-2045-simplify-hinted-handoff-001.diff, 
> CASSANDRA-2045-simplify-hinted-handoff-002.diff, CASSANDRA-2045-v4.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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