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From "Tyler Hobbs (JIRA)" <>
Subject [jira] [Updated] (CASSANDRA-5555) Allow sstableloader to handle a larger number of files
Date Thu, 18 Jul 2013 19:24:48 GMT


Tyler Hobbs updated CASSANDRA-5555:

    Attachment: 5555-fix-heap-and-streaming-trunk.patch

Attached file {{5555-fix-heap-and-streaming-trunk.patch}} (and [branch|])
should apply to the latest trunk.
> Allow sstableloader to handle a larger number of files
> ------------------------------------------------------
>                 Key: CASSANDRA-5555
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core, Tools
>            Reporter: Tyler Hobbs
>            Assignee: Tyler Hobbs
>             Fix For: 1.2.7
>         Attachments: 5555-01.txt, 5555-02.txt, 5555-2.txt, 5555-fix-heap-and-streaming-1.2.patch,
5555-fix-heap-and-streaming-1.2-v2.patch, 5555-fix-heap-and-streaming-trunk.patch, cass_5555_pic_8.png,
CASSANDRA-5555.txt, CASSANDRA-5555.txt, CASSANDRA-5555.txt
> With the default heap size, sstableloader will OOM when there are roughly 25k files in
the directory to load.  It's easy to reach this number of files in a single LCS column family.
> By avoiding creating all SSTableReaders up front in SSTableLoader, we should be able
to increase the number of files that sstableloader can handle considerably.

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