[PR] ci: label Delta pull requests with area:Delta [datafusion-comet]

["dwsmith1983 (via GitHub)" <gi...@apache.org>]

dwsmith1983 opened a new pull request, #6965:
URL: https://github.com/apache/datafusion-comet/pull/6965

   ## Which issue does this PR close?
   
   Closes #6964.
   
   ## Rationale for this change
   
   Delta pull requests get no area label of their own. A change under `contrib/**` is labeled `area:scan`, and Delta code outside `contrib/`, such as `native/core/src/execution/delta_dv.rs`, gets nothing Delta specific, while Iceberg pull requests get `area:Iceberg`.
   
   ## What changes are included in this PR?
   
   An `area:Delta` rule in `.github/labeler.yml`. It lists the Delta paths explicitly (both contrib modules, the three native Delta files under `native/core/src/execution/`, the Delta workflows, the gate script and the Delta user guide page) instead of copying the Iceberg rule's name glob, since `*[Dd]elta*` would also match the Iceberg delta-write code in `spark/src/main/scala/org/apache/comet/iceberg/` and its shims.
   
   ## How are these changes tested?
   
   I ran each glob through minimatch with `dot: true`, as the labeler does, against the file list on `main`. Every file whose path contains "delta" matches except the Iceberg delta-write files. Run over the changed files of recent pull requests, the rule labels #6945, #6932, #6838 and #6270, and leaves #5869 (delta encoding for cached longs) and #6664 (Iceberg writes) alone.
   
   The `area:Delta` label does not exist yet, and `label_prs.yml` grants only `pull-requests: write`, so the labeler cannot create it. Its single `setLabels` call would then fail and drop the other path labels too. Please create the label before merging, for example with the color and style of the other area labels:
   
   ```shell
   gh label create area:Delta --repo apache/datafusion-comet --color C5DEF5 --description "Delta Lake contrib (native scan, deletion vectors)"
   ```
   


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Re: [PR] ci: label Delta pull requests with area:Delta [datafusion-comet]

["andygrove (via GitHub)" <gi...@apache.org>]

andygrove merged PR #6965:
URL: https://github.com/apache/datafusion-comet/pull/6965


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Re: [PR] ci: label Delta pull requests with area:Delta [datafusion-comet]

["andygrove (via GitHub)" <gi...@apache.org>]

andygrove commented on PR #6965:
URL: https://github.com/apache/datafusion-comet/pull/6965#issuecomment-6236852838

   I created the label


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