[BLAZE-975] Fix duplicated shuffle data fetch under AQE Rebalance when using Uniffle in Blaze

[merrily01]

Which issue does this PR close?

Closes #975 .

Rationale for this change

• By passing startMapIndex and endMapIndex when invoking uniffleShuffleManager.getReader, the correct blocks bitmap is constructed to guarantee the shuffle read task fetches the proper data.

What changes are included in this PR?

• Add the passing of startMapIndex and endMapIndex parameters when invoking uniffleShuffleManager.getReader

• Add necessary log information for visibility

Are there any user-facing changes?

No

[merrily01]

@richox @zuston PTAL

[zuston]

Maybe we needn't to retrieve the startMapIdx -> endMapIdx blocks bitmap. Just do like this:

val reader =
      uniffleShuffleManager.getReader(
        rssHandleWrapper.rssShuffleHandleInfo,
        startMapIndex,
        endMapIndex,
        startPartition,
        endPartition,
        context,
        metrics)

PTAL @merrily01

[merrily01]

Maybe we needn't to retrieve the startMapIdx -> endMapIdx blocks bitmap. Just do like this:

val reader =
      uniffleShuffleManager.getReader(
        rssHandleWrapper.rssShuffleHandleInfo,
        startMapIndex,
        endMapIndex,
        startPartition,
        endPartition,
        context,
        metrics)

PTAL @merrily01

Well done! Indeed, the implemented logic should be used.
The code has been updated. Please kindly review. @zuston @richox

[zuston]

cc @richox again