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Posted to issues@hbase.apache.org by "Duo Zhang (Jira)" <ji...@apache.org> on 2025/08/31 14:08:00 UTC

[jira] [Updated] (HBASE-27640) Optimize writes of zero length values in compressed WALs

     [ https://issues.apache.org/jira/browse/HBASE-27640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Duo Zhang updated HBASE-27640:
------------------------------
    Fix Version/s: 4.0.0-alpha-1
                       (was: 3.0.0-beta-2)

> Optimize writes of zero length values in compressed WALs
> --------------------------------------------------------
>
>                 Key: HBASE-27640
>                 URL: https://issues.apache.org/jira/browse/HBASE-27640
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Andrew Kyle Purtell
>            Priority: Minor
>             Fix For: 4.0.0-alpha-1, 2.7.0
>
>
> If we unconditionally use the compressor, to "write" 0 bytes, then the compression codec will emit overheads... hadoop compressionstream header, compression bitstream header. All of that should be skipped so truly no compressed value data is written when the value is empty. 



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