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https://issues.apache.org/jira/browse/HBASE-4608?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lars Hofhansl updated HBASE-4608:
---------------------------------

    Fix Version/s: 0.94.0

Marking for 0.94
                
> HLog Compression
> ----------------
>
>                 Key: HBASE-4608
>                 URL: https://issues.apache.org/jira/browse/HBASE-4608
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Li Pi
>            Assignee: Li Pi
>             Fix For: 0.94.0
>
>         Attachments: 4608v1.txt, 4608v13.txt, 4608v13.txt, 4608v14.txt, 
> 4608v15.txt, 4608v16.txt, 4608v5.txt, 4608v6.txt, 4608v7.txt, 4608v8fixed.txt
>
>
> The current bottleneck to HBase write speed is replicating the WAL appends 
> across different datanodes. We can speed up this process by compressing the 
> HLog. Current plan involves using a dictionary to compress table name, region 
> id, cf name, and possibly other bits of repeated data. Also, HLog format may 
> be changed in other ways to produce a smaller HLog.

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