cloud-fan commented on a change in pull request #25620: [SPARK-25341][Core]
Support rolling back a shuffle map stage and re-generate the shuffle files
URL: https://github.com/apache/spark/pull/25620#discussion_r319118409
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File path:
common/network-shuffle/src/main/java/org/apache/spark/network/shuffle/ExternalBlockHandler.java
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@@ -300,7 +300,7 @@ public ShuffleMetrics() {
}
ManagedBufferIterator(FetchShuffleBlocks msg, int numBlockIds) {
- final int[] mapIdAndReduceIds = new int[2 * numBlockIds];
+ final long[] mapIdAndReduceIds = new long[2 * numBlockIds];
Review comment:
maybe we should one long[] for map id and one int[] for reduce id.
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