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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TEPHRA-227) DebugTool - show regions that have not yet recorded prune upper bound
Date Wed, 01 Mar 2017 23:51:45 GMT

    [ https://issues.apache.org/jira/browse/TEPHRA-227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15891325#comment-15891325
] 

ASF GitHub Bot commented on TEPHRA-227:
---------------------------------------

GitHub user gokulavasan opened a pull request:

    https://github.com/apache/incubator-tephra/pull/40

    TEPHRA-227 Add a new command to get the set of regions that have not been compacted

    Also adding a CLI command.
    
    JIRA : https://issues.apache.org/jira/browse/TEPHRA-227


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/gokulavasan/incubator-tephra fix/tephra-227

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/incubator-tephra/pull/40.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #40
    
----
commit c2b76408facb5d9b8169876c7830ec08759da455
Author: Gokul Gunasekaran <gokul@cask.co>
Date:   2017-03-01T22:54:40Z

    (TEPHRA-227) Add new command to get the set of regions that have not been compacted

commit 7111ce76e19ed1be012e5a5d7f11b30e8dc757c2
Author: Gokul Gunasekaran <gokul@cask.co>
Date:   2017-03-01T23:49:26Z

    Adding CLI command for the new getRegionsToBeCompacted method

----


> DebugTool - show regions that have not yet recorded prune upper bound 
> ----------------------------------------------------------------------
>
>                 Key: TEPHRA-227
>                 URL: https://issues.apache.org/jira/browse/TEPHRA-227
>             Project: Tephra
>          Issue Type: Improvement
>    Affects Versions: 0.11.0-incubating
>            Reporter: Gokul Gunasekaran
>            Assignee: Poorna Chandra
>             Fix For: 0.11.0-incubating
>
>
> i) getIdleRegions (numRegions) --> since this method returns all the regions that
have ever existed, this is not very useful since some regions might not be existing anymore.
So, we need to intersect the idleregions with the latest TimeRegion regions.
> ii) add a new method - getRegionsToBeFlushed ( ) --> that returns the regions that
are part of the latest TimeRegion but don't have any prune upper bound recorded and or not
empty either.
> So during debugging of prune progress, first we can hit the second method and get the
regions to be flushed/compacted (since any regions that have not compacted/pruned will prevent
pruning from progression). After that list is empty, we will hit the first endpoint to find
what regions are lagging, pruning/compacting them will help advance pruning.



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