I assume you don't use Kinesis. Are you running Spark 1.5.0 ? If you must use S3, is switching to Kinesis possible ?
Cheers On Thu, Sep 17, 2015 at 1:09 PM, Michal Čizmazia <mici...@gmail.com> wrote: > How to make Write Ahead Logs to work with S3? Any pointers welcome! > > It seems as a known issue: > https://issues.apache.org/jira/browse/SPARK-9215 > > I am getting this exception when reading write ahead log: > > Exception in thread "main" org.apache.spark.SparkException: Job aborted > due to stage failure: Task 0 in stage 5.0 failed 1 times, most recent > failure: Lost task 0.0 in stage 5.0 (TID 14, localhost): > org.apache.spark.SparkException: Could not read data from write ahead log > record > FileBasedWriteAheadLogSegment(s3ax://test/test/0/log-1442512871968-1442512931968,0,1721) > at org.apache.spark.streaming.rdd.WriteAheadLogBackedBlockRDD.org > $apache$spark$streaming$rdd$WriteAheadLogBackedBlockRDD$$getBlockFromWriteAheadLog$1(WriteAheadLogBackedBlockRDD.scala:144) > at > org.apache.spark.streaming.rdd.WriteAheadLogBackedBlockRDD.compute(WriteAheadLogBackedBlockRDD.scala:170) > at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:277) > at org.apache.spark.rdd.RDD.iterator(RDD.scala:244) > at > org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:35) > at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:277) > at org.apache.spark.rdd.RDD.iterator(RDD.scala:244) > at > org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:70) > at > org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41) > at org.apache.spark.scheduler.Task.run(Task.scala:70) > at > org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:213) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745) > Caused by: java.lang.NullPointerException > at > org.apache.spark.streaming.util.FileBasedWriteAheadLog.read(FileBasedWriteAheadLog.scala:106) > at org.apache.spark.streaming.rdd.WriteAheadLogBackedBlockRDD.org > $apache$spark$streaming$rdd$WriteAheadLogBackedBlockRDD$$getBlockFromWriteAheadLog$1(WriteAheadLogBackedBlockRDD.scala:141) > ... 13 more > > >
