[GitHub] [beam] lukecwik commented on a change in pull request #14968: [BEAM-12459] Ensure that we use the min element timestamp for Watch watermark if no explicit watermark is provided.

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

lukecwik commented on a change in pull request #14968:
URL: https://github.com/apache/beam/pull/14968#discussion_r647822323



##########
File path: sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/Watch.java
##########
@@ -955,11 +961,15 @@ public ProcessContinuation process(
         return stop();
       }
 
-      if (BoundedWindow.TIMESTAMP_MAX_VALUE.equals(newResults.getWatermark())) {
+      if (BoundedWindow.TIMESTAMP_MAX_VALUE.equals(computedWatermark)) {
         LOG.info("{} - will stop polling, reached max timestamp.", c.element());
         return stop();
       }
 
+      if (computedWatermark != null) {

Review comment:
       Since the restriction is done, wouldn't the watermark not be part of the `min` set of remaining restrictions being processed?




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