nirav patel created SPARK-26844:
-----------------------------------

             Summary: Parquet Reader exception - ArrayIndexOutOfBound should 
give more information to user
                 Key: SPARK-26844
                 URL: https://issues.apache.org/jira/browse/SPARK-26844
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.3.1, 2.2.1
            Reporter: nirav patel


I get following error while reading parquet file which has primitive datatypes 
(INT32, binary)

 

 

spark.read.format("parquet").load(path).show() // error happens here

 

Caused by: java.lang.ArrayIndexOutOfBoundsException

at java.lang.System.arraycopy(Native Method)

at 
org.apache.spark.sql.execution.vectorized.OnHeapColumnVector.putBytes(OnHeapColumnVector.java:163)

at 
org.apache.spark.sql.execution.vectorized.ColumnVector.appendBytes(ColumnVector.java:733)

at 
org.apache.spark.sql.execution.vectorized.OnHeapColumnVector.putByteArray(OnHeapColumnVector.java:410)

at 
org.apache.spark.sql.execution.datasources.parquet.VectorizedPlainValuesReader.readBinary(VectorizedPlainValuesReader.java:167)

at 
org.apache.spark.sql.execution.datasources.parquet.VectorizedRleValuesReader.readBinarys(VectorizedRleValuesReader.java:402)

at 
org.apache.spark.sql.execution.datasources.parquet.VectorizedColumnReader.readBinaryBatch(VectorizedColumnReader.java:419)

at 
org.apache.spark.sql.execution.datasources.parquet.VectorizedColumnReader.readBatch(VectorizedColumnReader.java:203)

at 
org.apache.spark.sql.execution.datasources.parquet.VectorizedParquetRecordReader.nextBatch(VectorizedParquetRecordReader.java:230)

at 
org.apache.spark.sql.execution.datasources.parquet.VectorizedParquetRecordReader.nextKeyValue(VectorizedParquetRecordReader.java:137)

at 
org.apache.spark.sql.execution.datasources.RecordReaderIterator.hasNext(RecordReaderIterator.scala:39)

at 
org.apache.spark.sql.execution.datasources.FileScanRDD$$anon$1.hasNext(FileScanRDD.scala:105)

at 
org.apache.spark.sql.execution.datasources.FileScanRDD$$anon$1.nextIterator(FileScanRDD.scala:177)

at 
org.apache.spark.sql.execution.datasources.FileScanRDD$$anon$1.hasNext(FileScanRDD.scala:105)

at 
org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIterator.scan_nextBatch$(Unknown
 Source)

at 
org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIterator.processNext(Unknown
 Source)

at 
org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43)

at 
org.apache.spark.sql.execution.WholeStageCodegenExec$$anonfun$8$$anon$1.hasNext(WholeStageCodegenExec.scala:395)

at 
org.apache.spark.sql.execution.SparkPlan$$anonfun$2.apply(SparkPlan.scala:234)

at 
org.apache.spark.sql.execution.SparkPlan$$anonfun$2.apply(SparkPlan.scala:228)

at 
org.apache.spark.rdd.RDD$$anonfun$mapPartitionsInternal$1$$anonfun$apply$25.apply(RDD.scala:827)

at 
org.apache.spark.rdd.RDD$$anonfun$mapPartitionsInternal$1$$anonfun$apply$25.apply(RDD.scala:827)

at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)

at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:323)

at org.apache.spark.rdd.RDD.iterator(RDD.scala:287)

at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:87)

at org.apache.spark.scheduler.Task.run(Task.scala:108)

at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:338)

at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

 

 

 

Point if  ArrayIndexOutOfBoundsException raised on a column/field spark should 
say what particular column/field it is. it helps in troubleshoot.

 

e.g. I get following error while reading same file using Drill reader.

org.apache.drill.common.exceptions.UserRemoteException: DATA_READ ERROR: Error 
reading page data File: /.../../part-00016-00000-m-00016.parquet *Column: 
GROUP_NAME* Row Group Start: 5539 Fragment 0:0 

I also get more specific information in Drillbit.log



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