CODEWITHSUNDEEP
apache-spark
joel
joel

Reputation: 61

Recovery from streaming kafka checkpoint ClassNotFoundException

I'm using spark-streaming-kafka checkpoints to store processed Kafka offsets into a folder in HDFS, after restarting the application (using spark-submit) in order to check recovery, I'm getting a ClassNotFoundException on a class that belongs to spark-streaming-kafka module and is packed into my application uber jar. Seems like the class is not looked up in my application jar.

Using v1.5.1 

15/12/02 15:42:30 INFO streaming.CheckpointReader: Attempting to load checkpoint from file hdfs://ip-xxx-xx-xx-xx:8020/user/checkpoint-1449064500000
15/12/02 15:42:30 WARN streaming.CheckpointReader: Error reading checkpoint from file hdfs://ip-xxx-xx-xx-xx:8020/user/checkpoint-1449064500000
java.io.IOException: java.lang.ClassNotFoundException: org.apache.spark.streaming.kafka.OffsetRange
    at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1163)
    at org.apache.spark.streaming.DStreamGraph.readObject(DStreamGraph.scala:188)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
    at org.apache.spark.streaming.Checkpoint$$anonfun$deserialize$2.apply(Checkpoint.scala:151)
    at org.apache.spark.streaming.Checkpoint$$anonfun$deserialize$2.apply(Checkpoint.scala:141)
    at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1206)
    at org.apache.spark.streaming.Checkpoint$.deserialize(Checkpoint.scala:154)
    at org.apache.spark.streaming.CheckpointReader$$anonfun$read$2.apply(Checkpoint.scala:329)
    at org.apache.spark.streaming.CheckpointReader$$anonfun$read$2.apply(Checkpoint.scala:325)
    at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
    at scala.collection.mutable.WrappedArray.foreach(WrappedArray.scala:35)
    at org.apache.spark.streaming.CheckpointReader$.read(Checkpoint.scala:325)
    at org.apache.spark.streaming.StreamingContext$.getOrCreate(StreamingContext.scala:852)
...

Upvotes: 1

Views: 928

Answers (1)

joel
joel

Reputation: 61

Update: found out there is an open bug on this - SPARK-5569 (https://github.com/apache/spark/pull/8955).

After applying the code change in the suggested commit and building spark-assembly it now works.

Upvotes: 1

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