[GitHub] rdhabalia commented on a change in pull request #1179: Avoid printing exception stack trace on lookup connection failures

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

rdhabalia commented on a change in pull request #1179: Avoid printing exception stack trace on lookup connection failures
URL: https://github.com/apache/incubator-pulsar/pull/1179#discussion_r166162464
 
 

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 File path: pulsar-client/src/main/java/org/apache/pulsar/client/impl/BinaryProtoLookupService.java
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 @@ -131,7 +132,7 @@ public BinaryProtoLookupService(PulsarClientImpl client, String serviceUrl, bool
             }).exceptionally((sendException) -> {
                 // lookup failed
                 log.warn("[{}] failed to send lookup request : {}", destination.toString(), sendException.getMessage(),
-                        sendException);
+                        sendException instanceof ClosedChannelException ? null : sendException);
 
 Review comment:
   instead null if we print empty string `""` then log will show empty string instead `{}`.

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