fix: Re-enable Spark 4 tests on Linux #1806
Merged
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Which issue does this PR close?
Closes #1786
Part of #1800
Rationale for this change
Rather than run all of the tests sequentially in a single process, split them into groups and run them in parallel. This somehow avoids the issue with the process eventually becoming unresponsive. If the problem starts again, it will be easier to isolate with this approach.
This approach may also reduce overall CI time if we apply it to other Spark versions as well.
Before
Based on run in https://github.com/apache/datafusion-comet/actions/runs/15219754440/job/42813062845
After
exec
fuzz
parquet
shuffle
What changes are included in this PR?
How are these changes tested?