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From "Jonathan Ellis (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-5555) Allow sstableloader to handle a larger number of files
Date Wed, 19 Jun 2013 16:17:21 GMT


Jonathan Ellis commented on CASSANDRA-5555:

We need to fix the issue Yuki raised before we can ship this.  This is going to take a bit
of work, so in the meantime I've reverted the original commit from 1.2 and will move this
ticket to 1.2.7.

In the meantime, I've created with the
memory reduction work (both IndexSummary and SegmentedFile) so Alex can continue to test that
> 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: Jonathan Ellis
>             Fix For: 1.2.6
>         Attachments: 5555-01.txt, 5555-02.txt, 5555-2.txt, 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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