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Vikas Vishwakarma commented on HBASE-17877: ------------------------------------------- I did some tests with JMH. So overall it looks like the hadoop version gives better throughput with random byte arrays, but it hits a worst case when two the two byte arrays are almost similar and have just 1 byte diff like say last byte in which case it gives 30-40% lower throughput. I will do some more experiments with the guava version also. The below result table is with Random byte arrays. I have used 20 warmup and 20 measurement cycles of 1 sec each. I will leave a longer running test for the weekend. |Byte Array Size|byte array diff index|Mean HBase (ops/ms)|Hadoop (ops/ms) |%diff| |----|----|----|----|----| |Random|4|440977.678|439558.547|0| |Random|8|437781.625|439089.09|0| |Random|16|441573.466|439052.733|-1 | |Random|20|433731.957|449067.897|4 | |Random|32|441486.237|448821.457|2 | |Random|50|432720.686|447027.454|3 | |Random|64|436713.574|440450.684|1 | |Random|100|430155.538|439399.306|2 | |Random|128|441413.074|440321.381|0 | |Random|200|450140.537|448164.678|0 | |Random|256|376015.788|457719.989|22 | |Random|512|437394.161|438975.893|0 | |Random|1024|442672.023|440269.773|-1 | |Random|2048|441500.328|439325.611|0 | |Random|4096|428583.365|439881.571|3 | |Random|8192|449889.732|439456.918|-2 | |Random|16384|439970.375|439271.189|0 | > Replace/improve HBase's byte[] comparator > ----------------------------------------- > > Key: HBASE-17877 > URL: https://issues.apache.org/jira/browse/HBASE-17877 > Project: HBase > Issue Type: Bug > Reporter: Lars Hofhansl > Assignee: Vikas Vishwakarma > Attachments: 17877-1.2.patch, 17877-v2-1.3.patch, > ByteComparatorJiraHBASE-17877.pdf > > > [~vik.karma] did some extensive tests and found that Hadoop's version is > faster - dramatically faster in some cases. > Patch forthcoming. -- This message was sent by Atlassian JIRA (v6.3.15#6346)