![]() When Git detects that your commit is about to be merged into your project's main branch without the main branch having been modified since your feature branch was first made, it chooses to use a fast-forward merge instead of a three-way merge. ![]() Most of these commits don’t need to be tracked in this way and can instead be merged using Git's fast-forward merge algorithm. However, they are not always so useful, especially if your project has a vast assortment of small commits happening at any given time that you’re not interested in recording.įor instance, bug fixes and other minor alterations to your project's code can quickly clutter up its history with an ever-expanding list of merge commits. Three-way merges are a great way for you to keep track of important feature additions and development milestones in your project as they leave a visible merge commit in place when they’re used. With all three of these in memory, Git then determines whether their differences can safely coexist or need to be resolved by a member of your team first. This is achieved by pulling three separate versions of your code together-the current main branch, your commits to be merged, and a common ancestor of the two. How Git handles three-way mergesĪ three-way merge with Git makes it possible for project branches to be rejoined with the main history even when both of these have been altered. ![]() To make a more informed decision, it helps to know how Git's two different types of merges work and when they’re best used. However, depending on your project's organizational needs, it may make sense to take control of this process on a deeper level. Assuming there are no conflicts in need of human intervention, Git will find the most efficient way to put your code together on its own. In the event that there are conflicts of any kind between the new code being merged in and the existing code in the main branch, Git will request that someone intervene to resolve them. Git does a number of things to ensure your project's history is maintained whenever commits from separate branches are merged back in. However, it helps to know when a Git merge fast forward can and should be used to make the most of it. In fact, many developers intentionally maintain their projects' repositories with this in mind, favoring fast-forward merges for their convenience and readability. Git makes ample use of fast-forwarding merges behind the scenes, speeding up your development workflow in the process.įast-forward merges can help keep your commit history clean and readable without erasing important information. You will find the change waiting for review.A Git fast forward is an extremely useful and efficient mechanism for harmonizing your project's main branch with changes introduced in a given feature branch. Note: use the appropriate branch instead of masterĩ. Submit your change back to the repository. Continue the rebase process using the following commandĨ. Note: You can use git-status to make sure that conflicts are solvedħ. Fix all conflicts that cannot be resolved manually using your editor. Note: use the appropriate branch instead of masterĥ. Make a rebase of your branch against master. (To find the command to execute you can open the corresponding change page on Gerrit UI, click on download menu, then copy the "pull" command.)Ĥ. You can use the review number and patchset as name. Create a new branch to work on the code with conflicts. Note: use the appropriate branch instead of masterĢ. You will have to change master to the right branch, if you are trying to review a different branch.ġ. The following steps assume that the commit is against master branch. Optionally, you can use git and these steps to resolve the conflict manually and update the commit on Gerrit so it can be merged. We strongly recommend the use of "git-review" tool, as described in this link. In other cases, some choices and updates need be done manually to resolve the conflicts that cannot be done using the Gerrit UI. If the change depends on another open change, it is rebased onto the current patch set of that other change.If the change does not depend on another open change, it is rebased onto the tip of the destination branch.You can specify the parent revision where to rebase. If the rebase fails, there are conflicts that have to be resolved manually.If the rebase is successful, a new patch set with the rebased commit is created.The behaviour is described in Gerrit Review UI: Just click on "Rebase" button to rebase the change. In some cases, it is possible to resolve merge conflicts issues in Gerrit using simple rebase triggered directly from the Gerrit UI. ![]() This page is mainly intended for MDLs, which have to deal with merge conflicts in Gerrit. ![]()
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