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Posted to issues@flink.apache.org by "Stefan Richter (JIRA)" <ji...@apache.org> on 2017/05/02 09:33:04 UTC

[jira] [Commented] (FLINK-6333) Utilize Bloomfilters in RocksDb

    [ https://issues.apache.org/jira/browse/FLINK-6333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15992627#comment-15992627 ] 

Stefan Richter commented on FLINK-6333:
---------------------------------------

It is mentioned in this issue: https://github.com/facebook/rocksdb/issues/1988

Code in the OP segfaults with newer versions of RocksDB.

> Utilize Bloomfilters in RocksDb
> -------------------------------
>
>                 Key: FLINK-6333
>                 URL: https://issues.apache.org/jira/browse/FLINK-6333
>             Project: Flink
>          Issue Type: Improvement
>            Reporter: Ted Yu
>
> Bloom Filters would speed up RocksDb lookups.
> When we upgrade to RocksDb 5.2.1+, we would be able to do:
> {code}
>               new BlockBasedTableConfig()
>                   .setBlockCacheSize(blockCacheSize)
>                   .setBlockSize(blockSize)
>                   .setFilter(new BloomFilter())
> {code}



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