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https://issues.apache.org/jira/browse/CASSANDRA-790?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12833212#action_12833212
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Jonathan Ellis commented on CASSANDRA-790:
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rather than just cap the filter size, you need to reduce bucketsPerElement too
or you will get suboptimal number-of-hashes calculation, since you haven't told
it it can't have as big a filter as it wanted.
> SSTables limited to (2^31)/15 keys
> ----------------------------------
>
> Key: CASSANDRA-790
> URL: https://issues.apache.org/jira/browse/CASSANDRA-790
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 0.5, 0.6, 0.7
> Reporter: Stu Hood
> Priority: Blocker
> Fix For: 0.5, 0.6, 0.7
>
> Attachments: short-term-790-check-for-overflow-and-cap-bloom-size.txt
>
>
> The current BloomFilter implementation requires a BitSet of (bucket_count *
> num_keys) in size, and that calculation is currently performed in an integer,
> which causes overflow for around 140 million keys in one SSTable.
> Short term fix: perform the calculation in a long, and cap the value to the
> maximum size of a BitSet.
> Long term fix: begin partitioning BitSets, perhaps using Linear Bloom Filters.
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