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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-381) Improve FS docs
Date Wed, 06 Feb 2013 06:55:13 GMT
Eli Collins created YARN-381:

             Summary: Improve FS docs
                 Key: YARN-381
                 URL: https://issues.apache.org/jira/browse/YARN-381
             Project: Hadoop YARN
          Issue Type: Improvement
    Affects Versions: 2.0.0-alpha
            Reporter: Eli Collins
            Priority: Minor

The MR2 FS docs could use some improvements.

- sizebasedweight - what is the "size" here? Total memory usage?

Pool properties:
- minResources - what does min amount of aggregate memory mean given that this is not a reservation?
- maxResources - is this a hard limit?
- weight: How is this  ratio configured?  Eg base is 1 and all weights are relative to that?
- schedulingMode - what is the default? Is fifo pure fifo, eg waits until all tasks for the
job are finished before launching the next job?

There's no mention of ACLs, even though they're supported. See the CS docs for comparison.

Also there are a couple typos worth fixing while we're at it, eg "finish. apps to run"

Worth keeping in mind that some of these will need to be updated to reflect that resource
calculators are now pluggable.

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