[
https://issues.apache.org/jira/browse/CASSANDRA-8459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14242513#comment-14242513
]
Benedict commented on CASSANDRA-8459:
-------------------------------------
No need, already sussed the problem and attached the fix
> "autocompaction" on reads can prevent memtable space reclaimation
> -----------------------------------------------------------------
>
> Key: CASSANDRA-8459
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8459
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Benedict
> Assignee: Benedict
> Fix For: 2.1.3
>
> Attachments: 8459.txt
>
>
> Memtable memory reclamation is dependent on reads always making progress,
> however on the collectTimeOrderedData critical path it is possible for the
> read to perform a _write_ inline, and for this write to block waiting for
> memtable space to be reclaimed. However the reclaimation is blocked waiting
> for this read to complete.
> There are a number of solutions to this, but the simplest is to make the
> defragmentation happen asynchronously, so the read terminates normally.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
