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HBASE-22549 Document how to re-run github PR checks 

Signed-off-by: Peter Somogyi <psomogyi@cloudera.com>
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stack 2019-06-06 09:14:03 -07:00
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@ -2387,6 +2387,28 @@ Avoid merge commits, as they create problems in the git history.
See <<appendix_contributing_to_documentation,appendix contributing to documentation>>.
====== How to re-trigger github Pull Request checks/re-build
A Pull Request (PR) submission triggers the hbase yetus checks. The checks make
sure the patch doesn't break the build or introduce test failures. The checks take
around four hours to run (They are the same set run when you submit a patch via
HBASE JIRA). When finished, they add a report to the PR as a comment. If a problem
w/ the patch -- failed compile, checkstyle violation, or an added findbugs --
the original author makes fixes and pushes a new patch. This re-runs the checks
to produce a new report.
Sometimes though, the patch is good but a flakey, unrelated test has the report vote -1
on the patch. In this case, **committers** can retrigger the check run by doing a force push of the
exact same patch. Or, click on the `Console output` link which shows toward the end
of the report (For example `https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-289/1/console`).
This will take you to `builds.apache.org`, to the build run that failed. See the
"breadcrumbs" along the top (where breadcrumbs is the listing of the directories that
gets us to this particular build page). It'll look something like
`Jenkins > HBase-PreCommit-GitHub-PR > PR-289 > #1`. Click on the
PR number -- i.e. PR-289 in our example -- and then, when you've arrived at the PR page,
find the 'Build with Parameters' menu-item (along top left-hand menu). Click here and
then `Build` leaving the JIRA_ISSUE_KEY empty. This will re-run your checks.
==== Dialog
Committers should hang out in the #hbase room on irc.freenode.net for real-time discussions.