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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-2015) GC does not start when running in standalone mode
Date Sat, 14 Dec 2013 05:49:09 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-2015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13848247#comment-13848247
] 

Sean Busbey commented on ACCUMULO-2015:
---------------------------------------

"standalone mode" was a shortcut to launching a single node Accumulo instance in psuedo-distributed
mode invoked by not specifying both the slaves and masters files in $ACCUMULO_HOME/conf. It
was in the original code import, so there aren't tickets to look at for its original reasoning.

The only [docs I've found for it are comments in the part of config.sh that set it up|https://git-wip-us.apache.org/repos/asf?p=accumulo.git;a=blob;f=bin/config.sh;h=485e259e232cbe0eb99180d1cafd6bc3a8e63488;hb=419aacc45279a3cd6b3b5bf61baf486f082a450a#l97].
AFAICT, it was to make it easier to spin up test instances.

[~kturner] removed it from the 1.5.x line in [this commit|https://git-wip-us.apache.org/repos/asf?p=accumulo.git;a=commit;h=4b163a996e090550eb6a29e6d63eb0abb5b5853c]
as a part of ACCUMULO-1071 (though I'm not sure if that ticket # was a typo). He would have
to speak to what his reasoning was, there's not an explanation on the ticket or mailing lists
at the time.

If I had to guess, I'd say the presumption was that the addition of bootstrap (and minicluster)
obviated the need. Since 1.5.x wasn't required to maintain default behavior, it was just removed
instead of wrapped in some option.

> GC does not start when running in standalone mode
> -------------------------------------------------
>
>                 Key: ACCUMULO-2015
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2015
>             Project: Accumulo
>          Issue Type: Sub-task
>          Components: gc
>            Reporter: Mike Drob
>            Assignee: Mike Drob
>             Fix For: 1.4.5
>
>         Attachments: ACCUMULO-2015-v1.patch
>
>
> As a result of the changes in ACCUMULO-1901, the gc will no longer start when initializing
a standalone (single-node) installation.



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