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From Andres de la Peña (Jira) <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-16261) Prevent unbounded number of flushing tasks
Date Fri, 20 Nov 2020 18:25:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-16261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17236358#comment-17236358
] 

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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