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Posted to commits@cassandra.apache.org by "Joshua McKenzie (JIRA)" <ji...@apache.org> on 2015/09/29 22:08:04 UTC

[jira] [Resolved] (CASSANDRA-8271) Remove SSTableDeletingTask

     [ https://issues.apache.org/jira/browse/CASSANDRA-8271?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joshua McKenzie resolved CASSANDRA-8271.
----------------------------------------
       Resolution: Later
    Fix Version/s:     (was: 3.x)

W/the changes from CASSANDRA-7066, CASSANDRA-9658, and finally CASSANDRA-10222, removing the various recurring deletion tasks isn't going to be viable until CASSANDRA-5863 (or some other buffered vs. mmap parity) comes through.

Closing as later pending those efforts.

> Remove SSTableDeletingTask
> --------------------------
>
>                 Key: CASSANDRA-8271
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8271
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Joshua McKenzie
>            Assignee: Joshua McKenzie
>            Priority: Minor
>
> With CASSANDRA-4050 and CASSANDRA-6993, our out-of-order deletion problems w/regards to Windows are resolved and the only outstanding reason to have SSTableDeletingTask would be for support of non-sun VM's w/regards to mmap'ed files.  As this is no longer a big concern in the Cassandra ecosystem (non-sun VM's), we should remove SSTableDeletingTask.
> The one caveat is that if we want to revisit mmap'ed I/O on Windows in the future we may need to re-use this type of "delayed deletion" approach due to Windows not allowing deletion of hard linked files w/memory-mapped segments in the original file, but CASSANDRA-5863 would obviate that concern.



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