[PARQUET-124] parquet.hadoop.ParquetOutputCommitter.commitJob() throws parquet.io.ParquetEncodingException

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.6.0
• Fix Version/s: 1.6.0
• Component/s: parquet-mr
• Assignee: Unassigned
• Reporter: Chris Albright
• Created: 31/Oct/14 04:33
• Updated: 10/Nov/15 06:07
• Resolved: 30/Jan/15 01:29

Description

I'm running an example combining Avro, Spark and Parquet (https://github.com/massie/spark-parquet-example), and in the process of updating the library versions, am getting the warning below.

The version of Parquet-Hadoop in the original example is 1.0.0. I am using 1.6.0rc3

The ParquetFileWriter.mergeFooters(Path, List<Footer>) method is performing a check to ensure the footers are all for files in the output directory. The output directory is supplied by ParquetFileWriter.writeMetadataFile; in 1.0.0, the output path was converted to a fully qualified output path before the call to mergeFooters, but in 1.6.0rc[2,3] that conversion happens after the call to mergeFooters. Because of this, the check within merge footers is failing (the URI for the footers starts with file:, but not the URI for the root path does not)

Here is the warning message and stacktrace.

Oct 30, 2014 9:11:31 PM WARNING: parquet.hadoop.ParquetOutputCommitter: could not write summary file for /tmp/1414728690018-0/output
parquet.io.ParquetEncodingException: file:/tmp/1414728690018-0/output/part-r-00000.parquet invalid: all the files must be contained in the root /tmp/1414728690018-0/output
at parquet.hadoop.ParquetFileWriter.mergeFooters(ParquetFileWriter.java:422)
at parquet.hadoop.ParquetFileWriter.writeMetadataFile(ParquetFileWriter.java:398)
at parquet.hadoop.ParquetOutputCommitter.commitJob(ParquetOutputCommitter.java:50)
at org.apache.spark.rdd.PairRDDFunctions.saveAsNewAPIHadoopDataset(PairRDDFunctions.scala:936)
at org.apache.spark.rdd.PairRDDFunctions.saveAsNewAPIHadoopFile(PairRDDFunctions.scala:832)
at com.zenfractal.SparkParquetExample$.main(SparkParquetExample.scala:72)
at com.zenfractal.SparkParquetExample.main(SparkParquetExample.scala)
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 com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)