[GitHub] [flink] tweise commented on a diff in pull request #19654: [FLINK-27529][connector/common] Replace HybridSourceSplitEnumerator readerSourceIndex to safely Integer check

[GitBox <gi...@apache.org>]

tweise commented on code in PR #19654:
URL: https://github.com/apache/flink/pull/19654#discussion_r867550647


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flink-connectors/flink-connector-base/src/main/java/org/apache/flink/connector/base/source/hybrid/HybridSourceSplitEnumerator.java:
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@@ -355,7 +355,8 @@ public Map<Integer, ReaderInfo> registeredReaders() {
         private Map<Integer, ReaderInfo> filterRegisteredReaders(Map<Integer, ReaderInfo> readers) {
             Map<Integer, ReaderInfo> readersForSource = new HashMap<>(readers.size());
             for (Map.Entry<Integer, ReaderInfo> e : readers.entrySet()) {
-                if (readerSourceIndex.get(e.getKey()) == (Integer) sourceIndex) {
+                // readerSourceIndex get value could be null

Review Comment:
   e.getKey() won't return null



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