otterc commented on code in PR #36305:
URL: https://github.com/apache/spark/pull/36305#discussion_r855455678
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core/src/main/scala/org/apache/spark/storage/ShuffleBlockFetcherIterator.scala:
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@@ -1166,6 +1166,8 @@ final class ShuffleBlockFetcherIterator(
case ShuffleBlockBatchId(shuffleId, mapId, startReduceId, _) =>
throw SparkCoreErrors.fetchFailedError(address, shuffleId, mapId,
mapIndex, startReduceId,
msg, e)
+ case ShuffleBlockChunkId(_, _, _, _) =>
+ pushBasedFetchHelper.initiateFallbackFetchForPushMergedBlock(blockId,
address)
Review Comment:
Wouldn't result in duplicate records? Some of the chunk is already consumed
but we don't know how much is that correct? So now we fallback to original
blocks but and that could re-fetch the records that were already consumed.
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