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From Anurag <anurag.pha...@gmail.com>
Subject Re: reading custom input format in Spark
Date Tue, 08 Apr 2014 20:53:58 GMT
andrew/nick,
thx for the input, got it to work:

sc.hadoopConfiguration.set("record.delimiter.regex",
"^[A-Za-z]{3},\\s\\d{2}\\s[A-Za-z]{3}.*")

:-)

-anurag



On Tue, Apr 8, 2014 at 1:47 PM, Anurag <anurag.phadke@gmail.com> wrote:

> andrew - yes, i am using the PatternInputFormat from the blog post you
> referenced.
> I know how to set the pattern in configuration while writing a MR job, how
> do i do that from a spark shell?
>
> -anurag
>
>
>
> On Tue, Apr 8, 2014 at 1:41 PM, Andrew Ash <andrew@andrewash.com> wrote:
>
>> Are you using the PatternInputFormat from this blog post?
>>
>>
>> https://hadoopi.wordpress.com/2013/05/31/custom-recordreader-processing-string-pattern-delimited-records/
>>
>> If so you need to set the pattern in the configuration before attempting
>> to
>> read data with that InputFormat:
>>
>> String regex = "^[A-Za-z]{3},\\s\\d{2}\\s[A-Za-z]{3}.*";
>>  Configuration conf = new Configuration(true);
>>  conf.set("record.delimiter.regex", regex);
>>
>>
>> On Tue, Apr 8, 2014 at 1:36 PM, Anurag <anurag.phadke@gmail.com> wrote:
>>
>> > Hi,
>> > I am able to read a custom input format in spark.
>> > scala> val inputRead = sc.newAPIHadoopFile("hdfs://
>> > 127.0.0.1/user/cloudera/date_dataset/
>> >
>> >
>> ",classOf[io.reader.PatternInputFormat],classOf[org.apache.hadoop.io.LongWritable],classOf[org.apache.hadoop.io.Text])
>> >
>> > However, doing a
>> > inputRead.count()
>> > results in null pointer exception.
>> > 14/04/08 13:33:39 INFO FileInputFormat: Total input paths to process : 1
>> > 14/04/08 13:33:39 INFO SparkContext: Starting job: count at <console>:15
>> > 14/04/08 13:33:39 INFO DAGScheduler: Got job 8 (count at <console>:15)
>> with
>> > 1 output partitions (allowLocal=false)
>> > 14/04/08 13:33:39 INFO DAGScheduler: Final stage: Stage 9 (count at
>> > <console>:15)
>> > 14/04/08 13:33:39 INFO DAGScheduler: Parents of final stage: List()
>> > 14/04/08 13:33:39 INFO DAGScheduler: Missing parents: List()
>> > 14/04/08 13:33:39 INFO DAGScheduler: Submitting Stage 9
>> (NewHadoopRDD[19]
>> > at newAPIHadoopFile at <console>:12), which has no missing parents
>> > 14/04/08 13:33:39 INFO DAGScheduler: Submitting 1 missing tasks from
>> Stage
>> > 9 (NewHadoopRDD[19] at newAPIHadoopFile at <console>:12)
>> > 14/04/08 13:33:39 INFO TaskSchedulerImpl: Adding task set 9.0 with 1
>> tasks
>> > 14/04/08 13:33:39 INFO TaskSetManager: Starting task 9.0:0 as TID 8 on
>> > executor localhost: localhost (PROCESS_LOCAL)
>> > 14/04/08 13:33:39 INFO TaskSetManager: Serialized task 9.0:0 as 1297
>> bytes
>> > in 0 ms
>> > 14/04/08 13:33:39 INFO Executor: Running task ID 8
>> > 14/04/08 13:33:39 INFO BlockManager: Found block broadcast_5 locally
>> > 14/04/08 13:33:39 INFO NewHadoopRDD: Input split: hdfs://
>> > 127.0.0.1/user/cloudera/date_dataset/sample.txt:0+759
>> > 14/04/08 13:33:39 WARN TaskSetManager: Lost TID 8 (task 9.0:0)
>> > 14/04/08 13:33:39 WARN TaskSetManager: Loss was due to
>> > java.lang.NullPointerException
>> > java.lang.NullPointerException
>> >     at java.util.regex.Pattern.<init>(Pattern.java:1132)
>> >     at java.util.regex.Pattern.compile(Pattern.java:823)
>> >     at
>> > io.reader.PatternRecordReader.initialize(PatternRecordReader.java:42)
>> >     at
>> > org.apache.spark.rdd.NewHadoopRDD$$anon$1.<init>(NewHadoopRDD.scala:96)
>> >     at org.apache.spark.rdd.NewHadoopRDD.compute(NewHadoopRDD.scala:84)
>> >     at org.apache.spark.rdd.NewHadoopRDD.compute(NewHadoopRDD.scala:48)
>> >     at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:241)
>> >     at org.apache.spark.rdd.RDD.iterator(RDD.scala:232)
>> >     at
>> org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:109)
>> >     at org.apache.spark.scheduler.Task.run(Task.scala:53)
>> >     at
>> >
>> >
>> org.apache.spark.executor.Executor$TaskRunner$$anonfun$run$1.apply$mcV$sp(Executor.scala:213)
>> >     at
>> >
>> org.apache.spark.deploy.SparkHadoopUtil.runAsUser(SparkHadoopUtil.scala:49)
>> >     at
>> > org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:178)
>> >     at
>> >
>> >
>> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>> >     at
>> >
>> >
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>> >     at java.lang.Thread.run(Thread.java:662)
>> > 14/04/08 13:33:39 ERROR TaskSetManager: Task 9.0:0 failed 1 times;
>> aborting
>> > job
>> > 14/04/08 13:33:39 INFO DAGScheduler: Failed to run count at <console>:15
>> > 14/04/08 13:33:39 INFO TaskSchedulerImpl: Remove TaskSet 9.0 from pool
>> > 14/04/08 13:33:39 ERROR Executor: Exception in task ID 8
>> > java.lang.NullPointerException
>> >     at java.util.regex.Pattern.<init>(Pattern.java:1132)
>> >     at java.util.regex.Pattern.compile(Pattern.java:823)
>> >     at
>> > io.reader.PatternRecordReader.initialize(PatternRecordReader.java:42)
>> >     at
>> > org.apache.spark.rdd.NewHadoopRDD$$anon$1.<init>(NewHadoopRDD.scala:96)
>> >     at org.apache.spark.rdd.NewHadoopRDD.compute(NewHadoopRDD.scala:84)
>> >     at org.apache.spark.rdd.NewHadoopRDD.compute(NewHadoopRDD.scala:48)
>> >     at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:241)
>> >     at org.apache.spark.rdd.RDD.iterator(RDD.scala:232)
>> >     at
>> org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:109)
>> >     at org.apache.spark.scheduler.Task.run(Task.scala:53)
>> >     at
>> >
>> >
>> org.apache.spark.executor.Executor$TaskRunner$$anonfun$run$1.apply$mcV$sp(Executor.scala:213)
>> >     at
>> >
>> org.apache.spark.deploy.SparkHadoopUtil.runAsUser(SparkHadoopUtil.scala:49)
>> >     at
>> > org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:178)
>> >     at
>> >
>> >
>> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>> >     at
>> >
>> >
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>> >     at java.lang.Thread.run(Thread.java:662)
>> > org.apache.spark.SparkException: Job aborted: Task 9.0:0 failed 1 times
>> > (most recent failure: Exception failure: java.lang.NullPointerException)
>> >     at
>> >
>> >
>> org.apache.spark.scheduler.DAGScheduler$$anonfun$org$apache$spark$scheduler$DAGScheduler$$abortStage$1.apply(DAGScheduler.scala:1028)
>> >     at
>> >
>> >
>> org.apache.spark.scheduler.DAGScheduler$$anonfun$org$apache$spark$scheduler$DAGScheduler$$abortStage$1.apply(DAGScheduler.scala:1026)
>> >     at
>> >
>> >
>> scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
>> >     at
>> scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
>> >     at org.apache.spark.scheduler.DAGScheduler.org
>> >
>> $apache$spark$scheduler$DAGScheduler$$abortStage(DAGScheduler.scala:1026)
>> >     at
>> >
>> >
>> org.apache.spark.scheduler.DAGScheduler$$anonfun$processEvent$10.apply(DAGScheduler.scala:619)
>> >     at
>> >
>> >
>> org.apache.spark.scheduler.DAGScheduler$$anonfun$processEvent$10.apply(DAGScheduler.scala:619)
>> >     at scala.Option.foreach(Option.scala:236)
>> >     at
>> >
>> >
>> org.apache.spark.scheduler.DAGScheduler.processEvent(DAGScheduler.scala:619)
>> >     at
>> >
>> >
>> org.apache.spark.scheduler.DAGScheduler$$anonfun$start$1$$anon$2$$anonfun$receive$1.applyOrElse(DAGScheduler.scala:207)
>> >     at akka.actor.ActorCell.receiveMessage(ActorCell.scala:498)
>> >     at akka.actor.ActorCell.invoke(ActorCell.scala:456)
>> >     at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:237)
>> >     at akka.dispatch.Mailbox.run(Mailbox.scala:219)
>> >     at
>> >
>> >
>> akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:386)
>> >     at
>> scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
>> >     at
>> >
>> >
>> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
>> >     at
>> > scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
>> >     at
>> >
>> >
>> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
>> >
>> >
>> > any idea what might be happening here?
>> >
>> > -anurag
>> >
>> >
>> >
>> > --
>> > Twitter: @anuragphadke (https://twitter.com/#!/anuragphadke)
>> >
>>
>
>
>
> --
> Twitter: @anuragphadke (https://twitter.com/#!/anuragphadke)
>



-- 
Twitter: @anuragphadke (https://twitter.com/#!/anuragphadke)

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