cloud-fan opened a new pull request #25049: [SPARK-26713][CORE][followup] revert the partial fix in ShuffleBlockFetcherIterator URL: https://github.com/apache/spark/pull/25049 ## What changes were proposed in this pull request? This PR reverts the partial bug fix in `ShuffleBlockFetcherIterator` which was introduced by https://github.com/apache/spark/pull/23638 . The reasons: 1. It's a potential bug. After fixing `PipelinedRDD` in #23638 the problem was resolved. 2. The fix is incorrect according to [the discussion](https://github.com/apache/spark/pull/23638#discussion_r251869084) ## How was this patch tested? existing tests
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