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Prasanth Jayachandran edited comment on HIVE-20892 at 11/8/18 9:40 PM: ----------------------------------------------------------------------- [https://github.com/prasanthj/hasher] has perf comparison for some of the non-cryptographic hashing algorithms. Murmur2 is slightly better in terms of perf than Murmur3 but for this reason [https://github.com/apache/hive/blob/master/storage-api/src/java/org/apache/hive/common/util/BloomFilter.java#L37-L40] Murmur3 is chosen for bloomfilter and HLL in Hive. was (Author: prasanth_j): [https://github.com/prasanthj/hasher] Murmur2 is slightly better in terms of perf than Murmur3 but for this reason [https://github.com/apache/hive/blob/master/storage-api/src/java/org/apache/hive/common/util/BloomFilter.java#L37-L40] Murmur3 is chosen for bloomfilter and HLL in Hive. > Benchmark XXhash for 64 bit hashing function instead of Murmum hash > ------------------------------------------------------------------- > > Key: HIVE-20892 > URL: https://issues.apache.org/jira/browse/HIVE-20892 > Project: Hive > Issue Type: Sub-task > Reporter: slim bouguerra > Assignee: slim bouguerra > Priority: Major > > https://cyan4973.github.io/xxHash/ > FYI this is used by lot of other MPP systems ... -- This message was sent by Atlassian JIRA (v7.6.3#76005)