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From "Keith Turner (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-2739) Create an In-Process MiniAccumuloCluster
Date Fri, 30 May 2014 19:33:01 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-2739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14014139#comment-14014139
] 

Keith Turner commented on ACCUMULO-2739:
----------------------------------------

[~elserj] do you know that spawning processes is whats making MAC slow?  I am sure thats part
of it, but is it the largest contributor?  For example the interaction between master, root
table and metadata table inorder to get first user tablet online could possibly be much slower
than spawning processes.  

I looked into this type of thing a long time ago, but can not remember much.   ACCUMULO-879
are an example of problems that have nothing to do w/ separate processes.  



> Create an In-Process MiniAccumuloCluster
> ----------------------------------------
>
>                 Key: ACCUMULO-2739
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2739
>             Project: Accumulo
>          Issue Type: New Feature
>          Components: mini
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>             Fix For: 1.7.0
>
>
> Two common griefs about MiniAccumuloCluster is that it's slow to start and it is difficult
to debug things running inside of the Master or TabletServer (because they are in separate
processes).
> Running each Accumulo process inside of the parent process would likely increase startup
speed and would make debugging much easier (as you wouldn't have to remote-attach the debugger
anymore).
> Such a MAC would likely also pave the way for easier migration away from MockAccumulo
as both of the above complaints are some of the primary concerns for removing Mock with no
replacemnt.



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