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https://issues.apache.org/jira/browse/CASSANDRA-5555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13686756#comment-13686756
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Yuki Morishita commented on CASSANDRA-5555:
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When you load SSTable via SSTableLoader, it creates index summary of 1 entry
with 1 index interval. So the loader will send estimated number of keys of 1
(or 0) every time regardless of actual keys in range, it may create BF of small
size that produces higher false positive unintentionally.
> 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, 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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