rmcyang commented on code in PR #41762:
URL: https://github.com/apache/spark/pull/41762#discussion_r1246991096
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common/network-shuffle/src/main/java/org/apache/spark/network/shuffle/RemoteBlockPushResolver.java:
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@@ -328,6 +328,10 @@ public MergedBlockMeta getMergedBlockMeta(
int size = (int) indexFile.length();
// First entry is the zero offset
int numChunks = (size / Long.BYTES) - 1;
+ if (numChunks <= 0) {
Review Comment:
From the stack-trace, this ArithmeticException would occur at `blockSize /
bitmaps.length` when `bitmaps.length` is 0. Why not check the length of
`chunkBitMaps` instead?
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