Yongjun Zhang created HADOOP-11045:
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Summary: Introducing a tool to detect flaky tests of hadoop
jenkins test job
Key: HADOOP-11045
URL: https://issues.apache.org/jira/browse/HADOOP-11045
Project: Hadoop Common
Issue Type: Improvement
Components: build, tools
Reporter: Yongjun Zhang
Assignee: Yongjun Zhang
File this jira to introduce a tool to detect flaky tests of hadoop jenkins test
jobs.
I developed the tool on top of some initial work [~tlipcon] did. We find it
quite useful. With Todd's agreement, I'd like to push it to upstream so all of
us can share (thanks Todd for the initial work and support). I hope you find
the tool useful.
This is a tool for hadoop contributors rather than hadoop users. Thanks
[~tedyu] for the advice to put to dev-support dir.
Description of the tool:
#
# Given a jenkins test job, this script examines all runs of the job done
# within specified period of time (number of days prior to the execution
# time of this script), and reports all failed tests.
#
# The output of this script includes a section for each run that has failed
# tests, with each failed test name listed.
#
# More importantly, at the end, it outputs a summary section to list all failed
# tests within all examined runs, and indicate how many runs a same test
# failed, and sorted all failed tests by how many runs each test failed in.
#
# This way, when we see failed tests in PreCommit build, we can quickly tell
# whether a failed test is a new failure or it failed before, and it may just
# be a flaky test.
#
# Of course, to be 100% sure about the reason of a failed test, closer look
# at the failed test for the specific run is necessary.
#
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