[GitHub] [spark] mridulm commented on a diff in pull request #41859: [SPARK-44215][3.3][SHUFFLE] If num chunks are 0, then server should throw a RuntimeException

["mridulm (via GitHub)" <gi...@apache.org>]

mridulm commented on code in PR #41859:
URL: https://github.com/apache/spark/pull/41859#discussion_r1253821516


##########
common/network-shuffle/src/test/java/org/apache/spark/network/shuffle/RemoteBlockPushResolverSuite.java:
##########
@@ -262,19 +262,23 @@ public void testDuplicateBlocksAreIgnoredWhenPrevStreamIsInProgress() throws IOE
     validateChunks(TEST_APP, 0, 0, 0, blockMeta, new int[]{4}, new int[][]{{0}});
   }
 
-  @Test
+  @Test(expected = RuntimeException.class)
   public void testFailureAfterData() throws IOException {
     StreamCallbackWithID stream =
       pushResolver.receiveBlockDataAsStream(
         new PushBlockStream(TEST_APP, NO_ATTEMPT_ID, 0, 0, 0, 0, 0));
     stream.onData(stream.getID(), ByteBuffer.wrap(new byte[4]));
     stream.onFailure(stream.getID(), new RuntimeException("Forced Failure"));
     pushResolver.finalizeShuffleMerge(new FinalizeShuffleMerge(TEST_APP, NO_ATTEMPT_ID, 0, 0));
-    MergedBlockMeta blockMeta = pushResolver.getMergedBlockMeta(TEST_APP, 0, 0, 0);
-    assertEquals("num-chunks", 0, blockMeta.getNumChunks());
+    try {

Review Comment:
   Ah nice ! I was thinking about how to enforce this in the earlier PR, but did not get a lot of time to look into it.



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