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From "Dave Latham (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14227) Fold special cased MOB APIs into existing APIs
Date Tue, 18 Aug 2015 13:56:46 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14701284#comment-14701284
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Dave Latham commented on HBASE-14227:
-------------------------------------

I'm not a fan of passing behavior arguments as special in band names for something like a
column family.  It leads to worse documentation, user surprises, and potentially even conflicts
if someone already has such a column family.  Since MOB compaction actually is a separate
thing, it should be reflected in the API by either another parameter or new API methods (though
they should be minimized).  But just my two cents from an interested user.

> Fold special cased MOB APIs into existing APIs
> ----------------------------------------------
>
>                 Key: HBASE-14227
>                 URL: https://issues.apache.org/jira/browse/HBASE-14227
>             Project: HBase
>          Issue Type: Task
>          Components: mob
>    Affects Versions: 2.0.0
>            Reporter: Andrew Purtell
>            Priority: Blocker
>             Fix For: 2.0.0
>
>
> There are a number of APIs that came in with MOB that are not new actions for HBase,
simply new actions for a MOB implementation:
> - compactMob
> - compactMobs
> - majorCompactMob
> - majorCompactMobs
> - getMobCompactionState
> And in HBaseAdmin:
> - validateMobColumnFamily
> Remove these special cases from the Admin API where possible by folding them into existing
APIs.
> We definitely don't need one method for a singleton and another for collections.
> Ideally we will not have any APIs named *Mob when finished, whether MOBs are in use on
a table or not should be largely an internal detail. Exposing as schema option would be fine,
this conforms to existing practice for other features.
> Marking critical because I think removing the *Mob special cased APIs should be a precondition
for release of this feature either in 2.0 or as a backport.



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