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https://issues.apache.org/jira/browse/CASSANDRA-16261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17236358#comment-17236358
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Andres de la Peña commented on CASSANDRA-16261:
-----------------------------------------------

[~e.dimitrova] If I'm understanding the 
[Downloads|https://cassandra.apache.org/download/] page, the rule about only 
really critical fixes only applies to 2.1, and indeed I don't think we should 
apply this fix to that branch. As for 2.2 and 3.0, they are supported until 4.0 
is released, not until a few more months before. In the case of 3.0 there are 6 
more months of support, which being a bit pessimistic about the release of 4.0 
start is not a short time, IMO. The bug that we are solving here maybe isn't 
critical but it isn't a minor thing either, so I think we should apply the fix 
to all the supported versions. Also, I think that the patch is relatively easy 
to apply to those versions, but I might be wrong.

> Prevent unbounded number of flushing tasks
> ------------------------------------------
>
>                 Key: CASSANDRA-16261
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16261
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Legacy/Local Write-Read Paths
>            Reporter: Ekaterina Dimitrova
>            Assignee: Ekaterina Dimitrova
>            Priority: Normal
>             Fix For: 3.11.x, 4.0-beta4
>
>
> The cleaner thread is not prevented from queueing an unbounded number of 
> flushing tasks for memtables that are almost empty.



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