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Nate McCall commented on CASSANDRA-12248:
-----------------------------------------
Committed in 3a79a027c7db2b8007a8ae4e19002c3edbf63d8e - includes a small unit
test that does increase then decrease which initially failed in the way
[~dikanggu] described before adding the LT and GT check to change the order.
Sorry for the run-around.
> Allow tuning compaction thread count at runtime
> -----------------------------------------------
>
> Key: CASSANDRA-12248
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12248
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Tom van der Woerdt
> Assignee: Dikang Gu
> Priority: Minor
> Fix For: 3.10
>
>
> While bootstrapping new nodes it can take a significant amount of time to
> catch up on compaction or 2i builds. In these cases it would be convenient to
> have a nodetool command that allows changing the number of concurrent
> compaction jobs to the amount of cores on the machine.
> Alternatively, an even better variant of this would be to have a setting
> "bootstrap_max_concurrent_compactors" which overrides the normal setting
> during bootstrap only. Saves me from having to write a script that does it.
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