johnjcasey commented on code in PR #30147:
URL: https://github.com/apache/beam/pull/30147#discussion_r1471427973


##########
sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigtable/BigtableServiceImpl.java:
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@@ -395,7 +395,14 @@ public void onResponse(Row response) {
 
                 @Override
                 public void onError(Throwable t) {
-                  future.setException(t);
+                  if (byteLimitReached) {
+                    // When the byte limit is reached we cancel the stream in 
onResponse.
+                    // In this case we don't want to fail the request with 
cancellation
+                    // exception. Instead, we construct the next request.
+                    onComplete();

Review Comment:
   It seems off to reroute the exception to oncomplete, instead of handling it 
in onerror.
   
   Will there be a scenario where we have reached the byte limit, but 
onComplete calls instead of onError?
   Alternately, will there be a scenario where we have reached the byte limit, 
but there is another exception?



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