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https://issues.apache.org/jira/browse/CASSANDRA-1190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12878762#action_12878762
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Stu Hood commented on CASSANDRA-1190:
-------------------------------------
Differentiating manual repairs from automatic repairs will require a network
protocol change, so for 0.6, I think we should just bump
TREE_STORE_TIMEOUT/NATURAL_REPAIR_FREQUENCY to values like 12/24 hours.
For trunk/0.7, it would make sense to remove the timeout entirely for manual
repairs, and to make the timeout for automatic repairs a calculated value based
on the size of the column family.
> Differentiate manual repair sessions from automatic
> ---------------------------------------------------
>
> Key: CASSANDRA-1190
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1190
> Project: Cassandra
> Issue Type: Bug
> Reporter: Stu Hood
> Priority: Critical
> Fix For: 0.6.3, 0.7
>
>
> Currently both manual and automatic repair sessions use the same timeout
> value: TREE_STORE_TIMEOUT. This has the very negative effect of setting a
> maximum time that compaction can take before a manual repair will fail.
> For automatic/natural repairs (triggered by two nodes autonomously finishing
> major compactions around the same time), you want a relatively low
> TREE_STORE_TIMEOUT value, because trees generated a long time apart will
> cause a lot of unnecessary repair. The current value is 10 minutes, to
> optimize for this case.
> On the other hand, for manual repairs, TREE_STORE_TIMEOUT needs to be
> significantly higher. For instance, if a manual repair is triggered for a
> source node A storing 2 TB of data, and a destination node B with an empty
> store, then node B needs to wait long enough for node A to finish compacting
> 2 TB of data, which might take > 12 hours. If a node B times out the local
> tree before node A sends its tree, then the repair will not occur.
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