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From "Keith Turner (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-2149) Verify mappers run locally in 1.6
Date Thu, 27 Feb 2014 18:45:20 GMT


Keith Turner commented on ACCUMULO-2149:

bq. Would it be sufficient to have the verification MR job look at the job counters to verify
that the number of data local map tasks are within some threshold of the total number of launched
map tasks?

That sounds like a good check.  Not as rigorous as I would like, but much better than nothing.
  If there is a bug in the Accumulo code and its giving the wrong location for a tablet, then
M/R would report task as local that are not.   For example if Accumulo was giving M/R the
last location instead of the current location.

> Verify mappers run locally in 1.6
> ---------------------------------
>                 Key: ACCUMULO-2149
>                 URL:
>             Project: Accumulo
>          Issue Type: Task
>            Reporter: Keith Turner
>            Assignee: Keith Turner
>             Fix For: 1.6.0
> Need to verify that map task in 1.6.0 continuous verify run locally.  Should test online
and offline map reduce.

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