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https://issues.apache.org/jira/browse/HBASE-16562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15467936#comment-15467936
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Andrew Purtell commented on HBASE-16562:
----------------------------------------
Please add an extra help message here why the parameter check failed
{code}
+
+ long wrap = (long)width*wrapMultiplier;
+ if (wrap < numNodes && numNodes % wrap != 0) {
----> Help message
+ System.err.println(USAGE);
+ return 1;
+ }
{code}
and then this is good to go, thanks [~chenheng]!
> ITBLL should fail to start if misconfigured
> -------------------------------------------
>
> Key: HBASE-16562
> URL: https://issues.apache.org/jira/browse/HBASE-16562
> Project: HBase
> Issue Type: Improvement
> Components: integration tests
> Reporter: Andrew Purtell
> Assignee: Heng Chen
> Attachments: HBASE-16562.patch
>
>
> The number of nodes in ITBLL must a multiple of width*wrap (defaults to 25M,
> but can be configured by adding two more args to the test invocation) or else
> verification will fail. This can be very expensive in terms of time or hourly
> billing for on demand test resources. Check the sanity of test parameters
> before launching any MR jobs and fail fast if invariants aren't met with an
> indication what parameter(s) need fixing.
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