[jira] [Updated] (ACCUMULO-549) Create infrastructure that supports debugging.

["Christopher Tubbs (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ACCUMULO-549?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Christopher Tubbs updated ACCUMULO-549:
---------------------------------------

    Fix Version/s:     (was: 1.5.0)
    
> Create infrastructure that supports debugging.
> ----------------------------------------------
>
>                 Key: ACCUMULO-549
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-549
>             Project: Accumulo
>          Issue Type: New Feature
>            Reporter: Keith Turner
>
> Before a release an extensive amount of testing is done that usually involves running test like continuous ingest and random walk on a cluster for extended periods of time.  When bugs are found by these test it can take a lot of time to track the issue down sometimes.  Inorder to make tracking these issues down easier the write ahead logs are archived.  These walogs archives make it possible to answer questions about a tablets history because everything ever written to the metadata table is there.  It would be nice to always have this capability on an accumulo system, and have it be easy to use.  Spelunking around in the write ahead logs is not an easy task.  
> It would be nice if accumulo could answer questions like the following. 
>  
>  * Where has a tablet been assigned
>  * What compactions has a tablet done
>  * What split or merge created a tablet
> These questions can currently be answered with walogs and log4j logs, but its painful.

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