[jira] [Resolved] (HBASE-5716) Make HBASE-4608 easier to use

["Andrew Kyle Purtell (Jira)" <ji...@apache.org>]

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

Andrew Kyle Purtell resolved HBASE-5716.
----------------------------------------
      Assignee:     (was: Li Pi)
    Resolution: Incomplete

> 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
>            Priority: Major
>
> 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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