srdo commented on a change in pull request #3164: STORM-3529: Catch and Log 
Kafka RetriableException
URL: https://github.com/apache/storm/pull/3164#discussion_r344495425
 
 

 ##########
 File path: 
external/storm-kafka-client/src/test/java/org/apache/storm/kafka/spout/KafkaSpoutSingleTopicTest.java
 ##########
 @@ -428,4 +427,33 @@ public void testOffsetMetrics() throws Exception {
         
assertEquals(offsetMetric.get(SingleTopicKafkaSpoutConfiguration.TOPIC+"/totalLatestCompletedOffset").longValue(),
 10);
         
assertEquals(offsetMetric.get(SingleTopicKafkaSpoutConfiguration.TOPIC+"/totalSpoutLag").longValue(),
 0);
     }
+
+    @Test
+    public void testOffsetMetricsReturnsNullWhenRetriableExceptionThrown() 
throws Exception {
+        final int messageCount = 10;
+        prepareSpout(messageCount);
+
+        Map<String, Long> offsetMetric  = (Map<String, Long>) 
spout.getKafkaOffsetMetric().getValueAndReset();
+        
assertEquals(offsetMetric.get(SingleTopicKafkaSpoutConfiguration.TOPIC+"/totalEarliestTimeOffset").longValue(),
 0);
+        // the offset of the last available message + 1.
+        
assertEquals(offsetMetric.get(SingleTopicKafkaSpoutConfiguration.TOPIC+"/totalLatestTimeOffset").longValue(),
 10);
+        
assertEquals(offsetMetric.get(SingleTopicKafkaSpoutConfiguration.TOPIC+"/totalRecordsInPartitions").longValue(),
 10);
+        
assertEquals(offsetMetric.get(SingleTopicKafkaSpoutConfiguration.TOPIC+"/totalLatestEmittedOffset").longValue(),
 0);
+        
assertEquals(offsetMetric.get(SingleTopicKafkaSpoutConfiguration.TOPIC+"/totalLatestCompletedOffset").longValue(),
 0);
+        //totalSpoutLag = totalLatestTimeOffset-totalLatestCompletedOffset
+        
assertEquals(offsetMetric.get(SingleTopicKafkaSpoutConfiguration.TOPIC+"/totalSpoutLag").longValue(),
 10);
+
+        //Emit all messages and check that they are emitted. Ack the messages 
too
+        for (int i = 0; i < messageCount; i++) {
+            nextTuple_verifyEmitted_ack_resetCollector(i);
+        }
+
+        commitAndVerifyAllMessagesCommitted(messageCount);
 
 Review comment:
   I think we can leave it out

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