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https://issues.apache.org/jira/browse/ACCUMULO-1785?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13843627#comment-13843627
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Josh Elser commented on ACCUMULO-1785:
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I just noticed that these changes also impacted how ACCUMULO_HOME is used. I'm
not sure if it was intentional or not.
Before these changes, bin/config.sh *always* calculated ACCUMULO_HOME based on
the location of itself (config.sh). Since the changes for this issue,
ACCUMULO_HOME is only calculated, when ACCUMULO_HOME is not already set or is
set to the empty string.
>From an error-catching perspective, should we add something that does some
>validation of the provided ACCUMULO_HOME when we don't calculate it? I can
>easily see cases where the user mistypes an export of ACCUMULO_HOME or
>programmatically generates an incorrect path and suddenly none of the
>classpaths work.
> Alter config.sh to optionally just verify environment instead of making
> changes
> -------------------------------------------------------------------------------
>
> Key: ACCUMULO-1785
> URL: https://issues.apache.org/jira/browse/ACCUMULO-1785
> Project: Accumulo
> Issue Type: Improvement
> Components: scripts
> Affects Versions: 1.4.4, 1.5.0, 1.6.0
> Reporter: Sean Busbey
> Assignee: Sean Busbey
> Priority: Minor
> Fix For: 1.4.5, 1.5.1, 1.6.0
>
> Attachments: ACCUMULO-1785.1.patch.txt, ACCUMULO-1785.2.patch.txt
>
>
> Right now, the accumulo scripts presume that invocation always happens on a
> node in the cluster. This makes integrating with external cluster management
> software more difficult.
> The primary issue is that bin/config.sh expects to find a full cluster
> configuration directory at all times. In the case of a configuration
> directory that doesn't specify any hosts it takes steps to set up a
> standalone cluster. That effort is unneeded and undesirable if we're just
> e.g. trying to go through init from a non-participant host.
> Add an optional environment variable to have config.sh just verify the
> invariants needed for bin/accumulo to behave correctly. When present, don't
> make local directories or write to files.
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