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Posted to issues@hbase.apache.org by "Yutong Xiao (Jira)" <ji...@apache.org> on 2021/12/29 12:56:00 UTC

[jira] [Updated] (HBASE-26635) Optimize decodeNumeric in OrderedBytes

     [ https://issues.apache.org/jira/browse/HBASE-26635?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yutong Xiao updated HBASE-26635:
--------------------------------
    Attachment: Benchmark-decoding.log

> Optimize decodeNumeric in OrderedBytes
> --------------------------------------
>
>                 Key: HBASE-26635
>                 URL: https://issues.apache.org/jira/browse/HBASE-26635
>             Project: HBase
>          Issue Type: Improvement
>          Components: Performance
>            Reporter: Yutong Xiao
>            Assignee: Yutong Xiao
>            Priority: Major
>         Attachments: Benchmark-decoding.log
>
>
> Currently, when we decode a byte array to a big decimal, there are plenty of BigDecimal operations, which result in a lot of only once used BigDecimal objects. Furthermore, the BigDecimal calculations are slow. We could boost this function by using String concatenation and point movement of BigDecimal. The JMH benchmark is uploaded to the attachment.
> Also, I added a UT to test the encoding / decoding correctness of 200 random test samples.



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