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https://issues.apache.org/jira/browse/HDDS-15892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ethan Rose resolved HDDS-15892.
-------------------------------
Resolution: Fixed
> Massive local build time degradation when using agent worktrees
> ---------------------------------------------------------------
>
> Key: HDDS-15892
> URL: https://issues.apache.org/jira/browse/HDDS-15892
> Project: Apache Ozone
> Issue Type: Bug
> Components: build
> Reporter: Ethan Rose
> Assignee: Ethan Rose
> Priority: Major
> Labels: pull-request-available
>
> Agents like Claude and Cursor add worktrees to hidden directories within the
> repo by default, like {{{}.claude/worktrees/{}}}. I have not been super
> proactive about cleaning worktrees when I'm done with them, and have
> accumulated ~20 so far.
> My local build command is:
> {code:java}
> mvn -DskipTests=true -Dmaven.javadoc.skip=true -DskipRecon --threads 2.0C
> -DskipShade -Dskip.npx clean package
> {code}
> This finishes in ~2 minutes in worktrees, but has crept up to 4+ minutes when
> run from the repo root. All the extra time seems to come from the
> distribution step.
> From repo root:
> {code:java}
> [INFO] Apache Ozone Distribution .......................... SUCCESS [02:55
> min]
> {code}
> From worktree:
> {code:java}
> [INFO] Apache Ozone Distribution .......................... SUCCESS [ 37.590
> s]
> {code}
> The culprit looks to be the {{find}} commands in
> [dist-layout-stitching|https://github.com/apache/ozone/blob/93e7b364e404c59161386e0a4b21129a32ba4112/hadoop-ozone/dist/dev-support/bin/dist-layout-stitching]
> which are traversing all subdirectories to find classpath and jar files,
> even hidden ones, which means they are incorrectly operating on every
> worktree's build results as well.
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