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https://issues.apache.org/jira/browse/CASSANDRA-6566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13902148#comment-13902148
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sankalp kohli commented on CASSANDRA-6566:
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Comments on v2 patch
Since terminate method on RepairJob is empty, why not remove it. Also remove
from where it is called in RepairSession.
Though not a part of this patch, but terminate method in RepairSession sounds
like you are terminating something. When it fact it cleans stuff up after
finishing.
> Differencer should not run in AntiEntropy Stage
> -----------------------------------------------
>
> Key: CASSANDRA-6566
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6566
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: sankalp kohli
> Assignee: Yuki Morishita
> Priority: Minor
> Fix For: 2.0.6
>
> Attachments: 6566-2.0-v2.txt, 6566-2.0.txt
>
>
> The Differencing currently runs in AntiEntropy stage. When there are lot of
> ranges which do not match, it takes sometime to compute the diff in ranges.
> Also with increase in Merkle tree height it will take even more time in case
> of large diffs.
> This causes other things to get blocked behind this.
> Also no other repair messages can be processed.
> Example: If a node is doing differencing for a repair, and Validation
> compaction is done for another repair, it needs to block to send the tree
> over till Differencing is done.
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