LuciferYang commented on code in PR #51961:
URL: https://github.com/apache/spark/pull/51961#discussion_r2265385352


##########
common/kvstore/src/test/java/org/apache/spark/util/kvstore/LevelDBSuite.java:
##########
@@ -220,19 +220,19 @@ public void testRemoveAll() throws Exception {
     db.removeAllByIndexValues(
       ArrayKeyIndexType.class,
       KVIndex.NATURAL_INDEX_NAME,
-      ImmutableSet.of(new int[] {0, 0, 0}, new int[] { 2, 2, 2 }));
+      Set.of(new int[] {0, 0, 0}, new int[] { 2, 2, 2 }));
     assertEquals(7, db.count(ArrayKeyIndexType.class));
 
     db.removeAllByIndexValues(
       ArrayKeyIndexType.class,
       "id",
-      ImmutableSet.of(new String[] { "things" }));
+      Set.<String[]>of(new String[] { "things" }));

Review Comment:
   This is simply to align the testing approach for `InMemoryStore`, due to the 
issue mentioned in 
https://github.com/apache/spark/pull/51961/files#r2265383429, which appears to 
affect only `InMemoryStore`. 
   
   For `RocksDBStore`, even if `Set.of(new String[] { "things" }));` is used 
here, the `RocksDBSuite` test will still succeed. This seems like something 
worth investigating further—for example, are there any differences in the 
implementations of `InMemoryStore` and `RocksDBStore`?
   
   It's getting late in my time zone today, so I'll look into why this 
discrepancy exists at a later time.



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