viirya commented on a change in pull request #32828:
URL: https://github.com/apache/spark/pull/32828#discussion_r647911954
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/state/SymmetricHashJoinStateManager.scala
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@@ -274,6 +274,9 @@ class SymmetricHashJoinStateManager(
if (valuePairAtMaxIndex != null) {
keyWithIndexToValue.put(currentKey, index,
valuePairAtMaxIndex.value,
valuePairAtMaxIndex.matched)
+ } else {
+ logWarning(s"`keyWithIndexToValue` returns a null value for index
${numValues - 1} " +
Review comment:
Hm, as currentKey is an UnsafeRow, I guess it is hard to get
understanding from its string output?
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