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Posted to issues@flink.apache.org by "Fang Yong (JIRA)" <ji...@apache.org> on 2017/04/20 03:36:04 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=15976008#comment-15976008 ] 

Fang Yong commented on FLINK-6333:
----------------------------------

Now flink uses RocksDb jni 4.11.2, and already support setFilter(new BloomFilter()) method in BlockBasedTableConfig. Can bloomfilters be used in rocksdb 4.11.2 directly? Are there any other improvements from current version to RocksDb 5.2.1+?

> 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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