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https://issues.apache.org/jira/browse/CASSANDRA-5555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13688110#comment-13688110
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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 
https://github.com/jbellis/cassandra/commits/5555-2 with the memory reduction 
work (both IndexSummary and SegmentedFile) so Alex can continue to test that 
aspect.
                
> Allow sstableloader to handle a larger number of files
> ------------------------------------------------------
>
>                 Key: CASSANDRA-5555
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5555
>             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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