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UD
UD
JS
JS
JS
A4
A4
DA
A4
A4
DA
DA
A4
A
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spark.shuffle.sort.bypassMergeThreshold
, которая вот про чтоIn the sort-based shuffle manager, avoid merge-sorting data if there is no map-side aggregation and there are at most this many reduce partitions.
If map-side combine is required, data will be sorted by key and partition for aggregation. Otherwise, data will only be sorted by partition.
IR
IR
DN
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