leilinen commented on issue #643: Offsets not available on leader
URL: https://github.com/apache/incubator-hudi/issues/643#issuecomment-484482759
 
 
   hi, @vinothchandar  I made a test again.  Firstly, stop HoodieDeltaStreamer 
program, and produce data into topic, then stop produce, delete all data of 
topic, continue to generate data into topic (that makes HoodieDeltaStreamer 
next consume offset invalid ) . Restart HoodieDeltaStreamer to consume data , 
it will consume data from next consume offset, which is not avaliable. It will 
throw a exception:
   
   ```
   Exception in thread "main" org.apache.spark.SparkException: Offsets not 
available on leader: OffsetRange(topic: 'll_binlog_hudi_test2', partition: 0, 
range: [1081027 -> 1581027])
           at 
org.apache.spark.streaming.kafka.KafkaUtils$.org$apache$spark$streaming$kafka$KafkaUtils$$checkOffsets(KafkaUtils.scala:200)
           at 
org.apache.spark.streaming.kafka.KafkaUtils$$anonfun$createRDD$1.apply(KafkaUtils.scala:253)
           at 
org.apache.spark.streaming.kafka.KafkaUtils$$anonfun$createRDD$1.apply(KafkaUtils.scala:249)
           at 
org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151)
           at 
org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112)
           at org.apache.spark.SparkContext.withScope(SparkContext.scala:701)
           at 
org.apache.spark.streaming.kafka.KafkaUtils$.createRDD(KafkaUtils.scala:249)
           at 
org.apache.spark.streaming.kafka.KafkaUtils$$anonfun$createRDD$3.apply(KafkaUtils.scala:338)
           at 
org.apache.spark.streaming.kafka.KafkaUtils$$anonfun$createRDD$3.apply(KafkaUtils.scala:333)
           at 
org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151)
           at 
org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112)
           at org.apache.spark.SparkContext.withScope(SparkContext.scala:701)
           at 
org.apache.spark.streaming.kafka.KafkaUtils$.createRDD(KafkaUtils.scala:333)
           at 
org.apache.spark.streaming.kafka.KafkaUtils.createRDD(KafkaUtils.scala)
           at 
com.uber.hoodie.utilities.sources.AvroKafkaSource.toAvroRDD(AvroKafkaSource.java:44)
           at 
com.uber.hoodie.utilities.sources.KafkaSource.fetchNewData(KafkaSource.java:246)
           at 
com.uber.hoodie.utilities.deltastreamer.HoodieDeltaStreamer.sync(HoodieDeltaStreamer.java:168)
           at 
com.uber.hoodie.utilities.deltastreamer.HoodieDeltaStreamer.main(HoodieDeltaStreamer.java:311)
           at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
           at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
           at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
           at java.lang.reflect.Method.invoke(Method.java:498)
           at 
org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:782)
           at 
org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:207)
           at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:232)
           at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:119)
           at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
   ```
   
    in **KafkaOffsetGen.getNextOffsetRanges()** method, the program does not 
check whether fromOffsets is available in topic . I think it should make a 
check before to consume. 

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