Changes

# '''Repo ''' - Shorthand for 'repository', this is where developers push their commits to have them become part of an upcoming version of Firefox. An example of this is the 'mozilla-inbound' repository.# '''Tree ''' - Another term for a repository, in reference to the branched nature of development under version control. 'Treeherder' is based on this, as a tool to "manage the trees".# '''Job ''' - The smallest unit of work shown in Treeherder's main UI. This can be a build job or a test job. Each test job can run many tests within it, but they get reported as a group to Treeherder. Examples of these would be the Windows 8 x64 Debug build job, or a mochitest-browser-chrome-1 test job.

Each push to a repository will run a number of build jobs for various platforms (Linux, MacOS, Windows, Android). Most platforms will make multiple builds in various configurations: OPT (optimized builds that strip out information helpful for debugging failures in favor of making things faster), DEBUG (unoptimized builds that don't strip out the debugging information), and [https://en.m.wikipedia.org/wiki/Profile-guided_optimization PGO] (the build compiler process runs through the code a few times, taking longer to complete, but speeding up some code paths to make the build run faster than Opt builds). Then Each of those builds will each be used to run a some number of test jobs to verify that the compiled code is running as intended. Then When either a build or test job runs into trouble, the job is reported as a failure to Treeherder, needing to be classified (also called 'starred' at Mozilla, since classifying . Classifying a job marks the job as classified by adding a star next to the job symbol in Treeherder by the current sheriff on duty (that's you!). = Treeherder's UI =

The next row in the site header includes a menu showing the currently selected repository, with information about the state of the repository (closed/open/approval-required). The 'Tiers' menu lets you select which [[Sheriffing/Job_Visibility_Policy|tiers]] of jobs are displayed. The 'Excluded Jobs' button toggles whether jobs that have been intentionally hidden from view are shown. The '+' or '-' button toggles whether groups of non-failing jobs are collapsed or expanded. The various colored circle buttons toggle the visibility of jobs in various states (red toggles failing jobs, green toggles passing jobs, etc). The textbox at the end is a quick-filter box, you can filter jobs by various properties from it without constructing a more exact filter from the 'Filters' menu above. (Treeherder displays the count of jobs that are currently "unclassified" in the middle of this row. More on this below.)