[GLUTEN-12594][VL] Fix incorrect task attempt ID used for Uniffle block IDs

[wForget]

What changes are proposed in this pull request?

Fix the task attempt ID used to generate Uniffle block IDs in the Velox columnar shuffle path.

Previously, UniffleShuffleManager#getWriter passed Spark's globally increasing
TaskContext.taskAttemptId() to VeloxUniffleColumnarShuffleWriter. This value may exceed the
number of bits reserved for task attempt IDs in Uniffle's BlockIdLayout.

This patch derives the task attempt ID using Uniffle's standard implementation:

getTaskAttemptIdForBlockId(context.partitionId(), context.attemptNumber())

The derived stage-scoped ID is passed to the columnar shuffle writer, matching the behavior of
Uniffle's standard RssShuffleManager. The string-form task ID remains unchanged.

Fixes #12594

How was this patch tested?

existing uniffle integration tests.

Was this patch authored or co-authored using generative AI tooling?

Generated-by: OpenAI Codex (GPT-5)

[Copilot]

Pull request overview

This PR fixes Uniffle block ID generation in the Velox columnar shuffle path by ensuring the task-attempt component encoded into Uniffle block IDs uses Uniffle’s stage-scoped task attempt ID scheme rather than Spark’s globally increasing TaskContext.taskAttemptId() (which can overflow Uniffle’s BlockIdLayout attempt-id bit width).

Changes:

• Derive a Uniffle-compatible (stage-scoped) block-id task attempt ID via getTaskAttemptIdForBlockId(context.partitionId(), context.attemptNumber()).
• Pass the derived rssTaskAttemptId into VeloxUniffleColumnarShuffleWriter instead of context.taskAttemptId().
• Keep the string-form taskId unchanged (context.taskAttemptId() + "_" + context.attemptNumber()), limiting behavior changes to block ID encoding.

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[zhouyuan]

👍