docs: correct Spark 4.2 version and CI test status in installation guide - #5315
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The installation guide listed the experimental Spark 4.2 support as targeting `4.2.0-preview4` and claimed no Comet tests run in CI. Both are stale: - The `spark-4.2` Maven profile targets the `4.2.0` final release. - `pr_build_linux.yml` includes a "Spark 4.2, JDK 17" job in the `linux-test` matrix, so Comet tests do run in CI. Spark SQL tests still do not run for 4.2 (no `spark_4_2` job in `ci.yml`), so that column stays "No" and the version remains experimental. Also refresh the two `4.2.0-preview4` examples in the contributor guide, which cited a version Comet no longer targets, to use a hypothetical future release instead.
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Which issue does this PR close?
N/A — docs correction spotted while reading the installation guide.
Rationale for this change
The experimental-versions table in the installation guide has two stale claims about Spark 4.2:
4.2.0-preview4, but thespark-4.2Maven profile inpom.xmltargets the4.2.0final release (<spark.version>4.2.0</spark.version>)..github/workflows/pr_build_linux.ymlhas a"Spark 4.2, JDK 17"entry in thelinux-testmatrix, so Comet tests do run for 4.2.What changes are included in this PR?
installation.md: experimental table row becomes4.2.0with "Comet Tests in CI: Yes".compatibility/spark-versions.md: drop the-preview4suffix and reword the warning, which claimed 4.2 support "targets a preview release of Spark".adding_a_new_spark_version.md: the two4.2.0-preview4examples cited a version Comet no longer targets; switched to a hypothetical future release so they keep illustrating the release-qualifier point.Spark SQL tests still do not run for 4.2 — there is no
spark_4_2job inci.yml— so that column stays "No" and 4.2 remains in the experimental tier. Per the promotion criteria inadding_a_new_spark_version.md, promotion to "Supported" requires both CI columns to be "Yes", so this PR intentionally does not promote it.How are these changes tested?
Docs only.
npx prettierreports no changes for all three files.