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From "Joshua McKenzie (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7463) Update CQLSSTableWriter to allow parallel writing of SSTables on the same table within the same JVM
Date Thu, 11 Sep 2014 20:13:34 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14130632#comment-14130632
] 

Joshua McKenzie commented on CASSANDRA-7463:
--------------------------------------------

NTFS is pretty picky about deleting files when you still have handles open to them (especially
pre-nio non/FileChannel days - see CASSANDRA-4050).  We rewrote that for the RAR but didn't
touch CommitLogSegments - I haven't dug into the patch here but that might be related to the
error you're seeing.

I'd rule out this being a timing issue w/the test and file access first.

> Update CQLSSTableWriter to allow parallel writing of SSTables on the same table within
the same JVM
> ---------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-7463
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7463
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Johnny Miller
>            Assignee: Carl Yeksigian
>             Fix For: 2.0.11
>
>         Attachments: 7463.patch
>
>
> Currently it is not possible to programatically write multiple SSTables for the same
table in parallel using the CQLSSTableWriter. This is quite a limitation and the workaround
of attempting to do this in a separate JVM is not a great solution.
> See: http://stackoverflow.com/questions/24396902/using-cqlsstablewriter-concurrently



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