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From "Li Pi (Assigned) (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HBASE-5716) Make HBASE-4608 easier to use
Date Wed, 04 Apr 2012 21:01:24 GMT

     [ https://issues.apache.org/jira/browse/HBASE-5716?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Li Pi reassigned HBASE-5716:
----------------------------

    Assignee: Li Pi
    
> Make HBASE-4608 easier to use
> -----------------------------
>
>                 Key: HBASE-5716
>                 URL: https://issues.apache.org/jira/browse/HBASE-5716
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Jean-Daniel Cryans
>            Assignee: Li Pi
>             Fix For: 0.96.0, 0.94.1
>
>
> HBASE-4608 is a nice feature but after playing with it for a while I think the following
should be fixed to make it easier to use by someone who's not a dev:
>  - Add some signal that says that the feature is turned on. Right now you can {{jstack
| grep KeyValueCompression}} a couple of times and if you get a hit you definitely know it's
on, but otherwise the random user wouldn't know without going through the jira.
>  - Add documentation in the reference guide. At the minimum add {{hbase.regionserver.wal.enablecompression}}
in there with a small description. Better would be to add a section in {{Appendix B}} or something
like that and describe the functionality a bit and who it's useful for. For example, flush
from your brain the knowledge of the patch and read the name of the configuration... now let's
say you have a use case that involves writing easily compressible values. Any normal user
would believe that this is a good tuning parameter for them, but it's just going to waste
CPU cycles.
>  - Add some metrics like we have for HFiles where you get a clue about the compression
ratio.

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