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From Naveen Madhire <vmadh...@umail.iu.edu>
Subject Re: PySpark Nested Json Parsing
Date Mon, 20 Jul 2015 18:18:57 GMT
I had the similar issue with spark 1.3
After migrating to Spark 1.4 and using sqlcontext.read.json it worked well
I think you can look at dataframe select and explode options to read the
nested json elements, array etc.

Thanks.


On Mon, Jul 20, 2015 at 11:07 AM, Davies Liu <davies@databricks.com> wrote:

> Could you try SQLContext.read.json()?
>
> On Mon, Jul 20, 2015 at 9:06 AM, Davies Liu <davies@databricks.com> wrote:
> > Before using the json file as text file, can you make sure that each
> > json string can fit in one line? Because textFile() will split the
> > file by '\n'
> >
> > On Mon, Jul 20, 2015 at 3:26 AM, Ajay <ajay0221@gmail.com> wrote:
> >> Hi,
> >>
> >> I am new to Apache Spark. I am trying to parse nested json using
> pyspark.
> >> Here is the code by which I am trying to parse Json.
> >> I am using Apache Spark 1.2.0 version of cloudera CDH 5.3.2.
> >>
> >> lines = sc.textFile(inputFile)
> >>
> >> import json
> >> def func(x):
> >> json_str = json.loads(x)
> >> if json_str['label']:
> >>                 if json_str['label']['label2']:
> >> return (1,1)
> >> return (0,1)
> >>
> >> lines.map(func).reduceByKey(lambda a,b: a +
> b).saveAsTextFile(outputFile)
> >>
> >> I am getting following error,
> >> ERROR [Executor task launch worker-13] executor.Executor
> >> (Logging.scala:logError(96)) - Exception in task 1.0 in stage 14.0 (TID
> 25)
> >> org.apache.spark.api.python.PythonException: Traceback (most recent call
> >> last):
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py",
> >> line 107, in main
> >>     process()
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py",
> >> line 98, in process
> >>     serializer.dump_stream(func(split_index, iterator), outfile)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 2073, in pipeline_func
> >>     return func(split, prev_func(split, iterator))
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 2073, in pipeline_func
> >>     return func(split, prev_func(split, iterator))
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 247, in func
> >>     return f(iterator)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 1561, in combineLocally
> >>     merger.mergeValues(iterator)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/shuffle.py",
> >> line 252, in mergeValues
> >>     for k, v in iterator:
> >>   File "<stdin>", line 2, in func
> >>   File "/usr/lib64/python2.6/json/__init__.py", line 307, in loads
> >>     return _default_decoder.decode(s)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 319, in decode
> >>     obj, end = self.raw_decode(s, idx=_w(s, 0).end())
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 336, in raw_decode
> >>     obj, end = self._scanner.iterscan(s, **kw).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject
> >>     value, end = iterscan(s, idx=end, context=context).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject
> >>     value, end = iterscan(s, idx=end, context=context).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 155, in JSONString
> >>     return scanstring(match.string, match.end(), encoding, strict)
> >> ValueError: Invalid \escape: line 1 column 855 (char 855)
> >>
> >> at
> org.apache.spark.api.python.PythonRDD$$anon$1.read(PythonRDD.scala:137)
> >> at
> org.apache.spark.api.python.PythonRDD$$anon$1.<init>(PythonRDD.scala:174)
> >> at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:96)
> >> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263)
> >> at org.apache.spark.rdd.RDD.iterator(RDD.scala:230)
> >> at org.apache.spark.api.python.PairwiseRDD.compute(PythonRDD.scala:305)
> >> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263)
> >> at org.apache.spark.rdd.RDD.iterator(RDD.scala:230)
> >> at
> >>
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68)
> >> at
> >>
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
> >> at org.apache.spark.scheduler.Task.run(Task.scala:56)
> >> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:196)
> >> at
> >>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> >> at
> >>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> >> at java.lang.Thread.run(Thread.java:745)
> >> 2015-07-20 09:58:24,727 ERROR [Executor task launch worker-12]
> >> executor.Executor (Logging.scala:logError(96)) - Exception in task 0.0
> in
> >> stage 14.0 (TID 24)
> >> org.apache.spark.api.python.PythonException: Traceback (most recent call
> >> last):
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py",
> >> line 107, in main
> >>     process()
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py",
> >> line 98, in process
> >>     serializer.dump_stream(func(split_index, iterator), outfile)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 2073, in pipeline_func
> >>     return func(split, prev_func(split, iterator))
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 2073, in pipeline_func
> >>     return func(split, prev_func(split, iterator))
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 247, in func
> >>     return f(iterator)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 1561, in combineLocally
> >>     merger.mergeValues(iterator)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/shuffle.py",
> >> line 252, in mergeValues
> >>     for k, v in iterator:
> >>   File "<stdin>", line 2, in func
> >>   File "/usr/lib64/python2.6/json/__init__.py", line 307, in loads
> >>     return _default_decoder.decode(s)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 319, in decode
> >>     obj, end = self.raw_decode(s, idx=_w(s, 0).end())
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 336, in raw_decode
> >>     obj, end = self._scanner.iterscan(s, **kw).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject
> >>     value, end = iterscan(s, idx=end, context=context).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject
> >>     value, end = iterscan(s, idx=end, context=context).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 155, in JSONString
> >>     return scanstring(match.string, match.end(), encoding, strict)
> >> ValueError: Invalid \escape: line 1 column 734 (char 734)
> >>
> >> at
> org.apache.spark.api.python.PythonRDD$$anon$1.read(PythonRDD.scala:137)
> >> at
> org.apache.spark.api.python.PythonRDD$$anon$1.<init>(PythonRDD.scala:174)
> >> at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:96)
> >> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263)
> >> at org.apache.spark.rdd.RDD.iterator(RDD.scala:230)
> >> at org.apache.spark.api.python.PairwiseRDD.compute(PythonRDD.scala:305)
> >> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263)
> >> at org.apache.spark.rdd.RDD.iterator(RDD.scala:230)
> >> at
> >>
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68)
> >> at
> >>
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
> >> at org.apache.spark.scheduler.Task.run(Task.scala:56)
> >> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:196)
> >> at
> >>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> >> at
> >>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> >> at java.lang.Thread.run(Thread.java:745)
> >> 2015-07-20 09:58:24,730 WARN  [task-result-getter-0]
> >> scheduler.TaskSetManager (Logging.scala:logWarning(71)) - Lost task 1.0
> in
> >> stage 14.0 (TID 25, localhost):
> org.apache.spark.api.python.PythonException:
> >> Traceback (most recent call last):
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py",
> >> line 107, in main
> >>     process()
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py",
> >> line 98, in process
> >>     serializer.dump_stream(func(split_index, iterator), outfile)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 2073, in pipeline_func
> >>     return func(split, prev_func(split, iterator))
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 2073, in pipeline_func
> >>     return func(split, prev_func(split, iterator))
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 247, in func
> >>     return f(iterator)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 1561, in combineLocally
> >>     merger.mergeValues(iterator)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/shuffle.py",
> >> line 252, in mergeValues
> >>     for k, v in iterator:
> >>   File "<stdin>", line 2, in func
> >>   File "/usr/lib64/python2.6/json/__init__.py", line 307, in loads
> >>     return _default_decoder.decode(s)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 319, in decode
> >>     obj, end = self.raw_decode(s, idx=_w(s, 0).end())
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 336, in raw_decode
> >>     obj, end = self._scanner.iterscan(s, **kw).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject
> >>     value, end = iterscan(s, idx=end, context=context).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject
> >>     value, end = iterscan(s, idx=end, context=context).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 155, in JSONString
> >>     return scanstring(match.string, match.end(), encoding, strict)
> >> ValueError: Invalid \escape: line 1 column 855 (char 855)
> >>
> >> at
> org.apache.spark.api.python.PythonRDD$$anon$1.read(PythonRDD.scala:137)
> >> at
> org.apache.spark.api.python.PythonRDD$$anon$1.<init>(PythonRDD.scala:174)
> >> at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:96)
> >> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263)
> >> at org.apache.spark.rdd.RDD.iterator(RDD.scala:230)
> >> at org.apache.spark.api.python.PairwiseRDD.compute(PythonRDD.scala:305)
> >> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263)
> >> at org.apache.spark.rdd.RDD.iterator(RDD.scala:230)
> >> at
> >>
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68)
> >> at
> >>
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
> >> at org.apache.spark.scheduler.Task.run(Task.scala:56)
> >> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:196)
> >> at
> >>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> >> at
> >>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> >> at java.lang.Thread.run(Thread.java:745)
> >>
> >> 2015-07-20 09:58:24,731 ERROR [task-result-getter-0]
> >> scheduler.TaskSetManager (Logging.scala:logError(75)) - Task 1 in stage
> 14.0
> >> failed 1 times; aborting job
> >> 2015-07-20 09:58:24,731 INFO  [task-result-getter-0]
> >> scheduler.TaskSchedulerImpl (Logging.scala:logInfo(59)) - Removed
> TaskSet
> >> 14.0, whose tasks have all completed, from pool
> >> Traceback (most recent call last):
> >> 2015-07-20 09:58:24,732 INFO
> [sparkDriver-akka.actor.default-dispatcher-2]
> >> scheduler.TaskSchedulerImpl (Logging.scala:logInfo(59)) - Cancelling
> stage
> >> 14
> >>   File "<stdin>", line 1, in <module>
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 1288, in saveAsTextFile
> >>     keyed._jrdd.map(self.ctx._jvm.BytesToString()).saveAsTextFile(path)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/lib/py4j-0.8.2.1-src.zip/py4j/java_gateway.py",
> >> line 538, in __call__
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/lib/py4j-0.8.2.1-src.zip/py4j/protocol.py",
> >> line 300, in get_return_value
> >> py4j.protocol2015-07-20 09:58:24,732 WARN  [task-result-getter-1]
> >> scheduler.TaskSetManager (Logging.scala:logWarning(71)) - Lost task 0.0
> in
> >> stage 14.0 (TID 24, localhost):
> org.apache.spark.api.python.PythonException:
> >> Traceback (most recent call last):
> >> .Py4JJavaError  File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py",
> >> line 107, in main
> >>     process()
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py",
> >> line 98, in process
> >>     serializer.dump_stream(func(split_index, iterator), outfile)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 2073, in pipeline_func
> >>     return func(split, prev_func(split, iterator))
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 2073, in pipeline_func
> >>     return func(split, prev_func(split, iterator))
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 247, in func
> >>     return f(iterator)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 1561, in combineLocally
> >>     merger.mergeValues(iterator)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/shuffle.py",
> >> line 252, in mergeValues
> >>     for k, v in iterator:
> >>   File "<stdin>", line 2, in func
> >>   File "/usr/lib64/python2.6/json/__init__.py", line 307, in loads
> >>     return _default_decoder.decode(s)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 319, in decode
> >>     obj, end = self.raw_decode(s, idx=_w(s, 0).end())
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 336, in raw_decode
> >>     obj, end = self._scanner.iterscan(s, **kw).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject
> >>     value, end = iterscan(s, idx=end, context=context).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject
> >>     value, end = iterscan(s, idx=end, context=context).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 155, in JSONString
> >>     return scanstring(match.string, match.end(), encoding, strict)
> >> ValueError: Invalid \escape: line 1 column 734 (char 734)
> >>
> >> at
> org.apache.spark.api.python.PythonRDD$$anon$1.read(PythonRDD.scala:137)
> >> at
> org.apache.spark.api.python.PythonRDD$$anon$1.<init>(PythonRDD.scala:174)
> >> at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:96)
> >> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263)
> >> at org.apache.spark.rdd.RDD.iterator(RDD.scala:230)
> >> at org.apache.spark.api.python.PairwiseRDD.compute(PythonRDD.scala:305)
> >> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263)
> >> at org.apache.spark.rdd.RDD.iterator(RDD.scala:230)
> >> at
> >>
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68)
> >> at
> >>
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
> >> at org.apache.spark.scheduler.Task.run(Task.scala:56)
> >> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:196)
> >> at
> >>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> >> at
> >>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> >> at java.lang.Thread.run(Thread.java:745)
> >>
> >> 2015-07-20 09:58:24,732 INFO  [Thread-2] scheduler.DAGScheduler
> >> (Logging.scala:logInfo(59)) - Job 8 failed: saveAsTextFile at
> >> NativeMethodAccessorImpl.java:-2, took 0.090286 s
> >> 2015-07-20 09:58:24,733 INFO  [task-result-getter-1]
> >> scheduler.TaskSchedulerImpl (Logging.scala:logInfo(59)) - Removed
> TaskSet
> >> 14.0, whose tasks have all completed, from pool
> >> : An error occurred while calling o276.saveAsTextFile.
> >> : org.apache.spark.SparkException: Job aborted due to stage failure:
> Task 1
> >> in stage 14.0 failed 1 times, most recent failure: Lost task 1.0 in
> stage
> >> 14.0 (TID 25, localhost): org.apache.spark.api.python.PythonException:
> >> Traceback (most recent call last):
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py",
> >> line 107, in main
> >>     process()
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py",
> >> line 98, in process
> >>     serializer.dump_stream(func(split_index, iterator), outfile)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 2073, in pipeline_func
> >>     return func(split, prev_func(split, iterator))
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 2073, in pipeline_func
> >>     return func(split, prev_func(split, iterator))
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 247, in func
> >>     return f(iterator)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py",
> >> line 1561, in combineLocally
> >>     merger.mergeValues(iterator)
> >>   File
> >>
> "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/shuffle.py",
> >> line 252, in mergeValues
> >>     for k, v in iterator:
> >>   File "<stdin>", line 2, in func
> >>   File "/usr/lib64/python2.6/json/__init__.py", line 307, in loads
> >>     return _default_decoder.decode(s)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 319, in decode
> >>     obj, end = self.raw_decode(s, idx=_w(s, 0).end())
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 336, in raw_decode
> >>     obj, end = self._scanner.iterscan(s, **kw).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject
> >>     value, end = iterscan(s, idx=end, context=context).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject
> >>     value, end = iterscan(s, idx=end, context=context).next()
> >>   File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
> >>     rval, next_pos = action(m, context)
> >>   File "/usr/lib64/python2.6/json/decoder.py", line 155, in JSONString
> >>     return scanstring(match.string, match.end(), encoding, strict)
> >> ValueError: Invalid \escape: line 1 column 855 (char 855)
> >>
> >> at
> org.apache.spark.api.python.PythonRDD$$anon$1.read(PythonRDD.scala:137)
> >> at
> org.apache.spark.api.python.PythonRDD$$anon$1.<init>(PythonRDD.scala:174)
> >> at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:96)
> >> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263)
> >> at org.apache.spark.rdd.RDD.iterator(RDD.scala:230)
> >> at org.apache.spark.api.python.PairwiseRDD.compute(PythonRDD.scala:305)
> >> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263)
> >> at org.apache.spark.rdd.RDD.iterator(RDD.scala:230)
> >> at
> >>
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68)
> >> at
> >>
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
> >> at org.apache.spark.scheduler.Task.run(Task.scala:56)
> >> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:196)
> >> at
> >>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> >> at
> >>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> >> at java.lang.Thread.run(Thread.java:745)
> >>
> >> Driver stacktrace:
> >> at
> >> org.apache.spark.scheduler.DAGScheduler.org
> $apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1214)
> >> at
> >>
> org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1203)
> >> at
> >>
> org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1202)
> >> at
> >>
> scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
> >> at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
> >> at
> >>
> org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1202)
> >> at
> >>
> org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:696)
> >> at
> >>
> org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:696)
> >> at scala.Option.foreach(Option.scala:236)
> >> at
> >>
> org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:696)
> >> at
> >>
> org.apache.spark.scheduler.DAGSchedulerEventProcessActor$$anonfun$receive$2.applyOrElse(DAGScheduler.scala:1420)
> >> at akka.actor.ActorCell.receiveMessage(ActorCell.scala:498)
> >> at akka.actor.ActorCell.invoke(ActorCell.scala:456)
> >> at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:237)
> >> at akka.dispatch.Mailbox.run(Mailbox.scala:219)
> >> at
> >>
> akka.dispatch.ForkJoinExecutorConfigurator$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)
> >>
> >> What I am doing wrong. Please guide.
> >>
> >> Ajay Dubey
>
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