How To Use

Auto-revert !

For compile failures and consistent gtest failures, Findit started to auto-revert culprits by creating & committing a revert like this. For compile failures, Findit is usually pretty quick for CXX/CC failures (compile x.cc into x.o), and it is recommended that sheriffs wait for Findit in such cases (~70% of all compile step failures).

• Sheriffs and troopers: Findit is limited to auto-commit 4 reverts and auto-create another 6 for each failure type* within 24 hours. But if it runs into a serious bug like reverting many commits crazily, please follow the playbook to take appropriate actions.
• Developers: If you don't want Findit to auto-revert your change, please add a flag 'NOAUTOREVERT=true' in your CL description (example).

* In total, Findit is expected to auto-commit no more than 8 and auto-create no more than 12 within 24 hours.

How to get analysis results?

1. Read results on Sheriff-o-Matic

Findit is integrated with Sheriff-O-Matic (aka SoM) to show analysis results on SoM automatically. For failures on SoM, there is no need to manually trigger the analysis in Findit.

2. Trigger analysis on Findit

Open https://findit-for-me.appspot.com/, paste the build URL, trigger an analysis by clicking the Analyze button, and wait for the result.

How to interpret analysis results?

1. On Sheriff-O-Matic UI

Findit provides different information to each failure based on its findings or its status.

• Revert CL created by Findit

Chromium Sheriffs: Please review and commit the revert CL if you confirm the revert is correct.

• Revert CL submitted by Findit

Chromium Sheriffs: Please confirm if the revert CL is correct. If not, please revert it and file a bug.

• Suspected/Culprit CL

• Flaky test(s)

• Still running

• No result

• Not support

2. On Findit UI

The result from heuristic analysis is usually shown first, because it is as quick as ~ 2 minutes. Later, try-job results for compile and gtest failures will be shown instead.

• Compile failures
• Time for analysis:
  • Heuristic result: ~ 2 minutes
  • Try-job result: median = 14 minutes

• Test failures
• Time for analysis:
  • Heuristic result: ~ 2 minutes
  • Try-job result: median = 24 minutes