Has anyone tried this? I'd like to read a bunch of Avro GenericRecords
from a Parquet file. I'm having a bit of trouble with respect to
dependencies. My latest attempt looks like this:
export
SPARK_CLASSPATH="/Users/laserson/repos/parquet-mr/parquet-avro/target/parquet-avro-1.3.3-SNAPSHOT.jar:/Users/laserson/repos/parquet-mr/parquet-hadoop/target/parquet-hadoop-1.3.3-SNAPSHOT.jar:/Users/laserson/repos/parquet-mr/parquet-common/target/parquet-common-1.3.3-SNAPSHOT.jar:/Users/laserson/repos/parquet-mr/parquet-column/target/parquet-column-1.3.3-SNAPSHOT.jar:/Users/laserson/repos/parquet-format/target/parquet-format-2.0.1-SNAPSHOT.jar"
MASTER=local ~/repos/incubator-spark/bin/spark-shell
Then in the shell:
val records1 =
sc.newAPIHadoopFile("/Users/laserson/temp/test-parquet/alltypeuri",
classOf[AvroParquetInputFormat], classOf[Void], classOf[IndexedRecord],
sc.hadoopConfiguration)
records1.collect
At which point it barfs:
14/02/05 12:02:32 INFO FileInputFormat: Total input paths to process : 3
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further
details.
java.io.IOException: Could not read footer: java.lang.NoClassDefFoundError:
parquet/org/codehaus/jackson/JsonGenerationException
at
parquet.hadoop.ParquetFileReader.readAllFootersInParallel(ParquetFileReader.java:189)
at
parquet.hadoop.ParquetFileReader.readAllFootersInParallelUsingSummaryFiles(ParquetFileReader.java:145)
at parquet.hadoop.ParquetInputFormat.getFooters(ParquetInputFormat.java:354)
at
parquet.hadoop.ParquetInputFormat.getFooters(ParquetInputFormat.java:339)
at parquet.hadoop.ParquetInputFormat.getSplits(ParquetInputFormat.java:246)
at org.apache.spark.rdd.NewHadoopRDD.getPartitions(NewHadoopRDD.scala:85)
at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:207)
at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:205)
at scala.Option.getOrElse(Option.scala:120)
at org.apache.spark.rdd.RDD.partitions(RDD.scala:205)
at org.apache.spark.SparkContext.runJob(SparkContext.scala:863)
at org.apache.spark.rdd.RDD.collect(RDD.scala:602)
at $iwC$$iwC$$iwC$$iwC.<init>(<console>:20)
at $iwC$$iwC$$iwC.<init>(<console>:25)
at $iwC$$iwC.<init>(<console>:27)
at $iwC.<init>(<console>:29)
at <init>(<console>:31)
at .<init>(<console>:35)
at .<clinit>(<console>)
at .<init>(<console>:7)
at .<clinit>(<console>)
at $print(<console>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.spark.repl.SparkIMain$ReadEvalPrint.call(SparkIMain.scala:772)
at
org.apache.spark.repl.SparkIMain$Request.loadAndRun(SparkIMain.scala:1040)
at org.apache.spark.repl.SparkIMain.loadAndRunReq$1(SparkIMain.scala:609)
at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:640)
at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:604)
at org.apache.spark.repl.SparkILoop.reallyInterpret$1(SparkILoop.scala:788)
at
org.apache.spark.repl.SparkILoop.interpretStartingWith(SparkILoop.scala:833)
at org.apache.spark.repl.SparkILoop.command(SparkILoop.scala:745)
at org.apache.spark.repl.SparkILoop.processLine$1(SparkILoop.scala:593)
at org.apache.spark.repl.SparkILoop.innerLoop$1(SparkILoop.scala:600)
at org.apache.spark.repl.SparkILoop.loop(SparkILoop.scala:603)
at
org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply$mcZ$sp(SparkILoop.scala:926)
at
org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply(SparkILoop.scala:876)
at
org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply(SparkILoop.scala:876)
at
scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:135)
at org.apache.spark.repl.SparkILoop.process(SparkILoop.scala:876)
at org.apache.spark.repl.SparkILoop.process(SparkILoop.scala:968)
at org.apache.spark.repl.Main$.main(Main.scala:31)
at org.apache.spark.repl.Main.main(Main.scala)
Caused by: java.lang.NoClassDefFoundError:
parquet/org/codehaus/jackson/JsonGenerationException
at
parquet.format.converter.ParquetMetadataConverter.fromParquetMetadata(ParquetMetadataConverter.java:359)
at
parquet.format.converter.ParquetMetadataConverter.readParquetMetadata(ParquetMetadataConverter.java:312)
at parquet.hadoop.ParquetFileReader.readFooter(ParquetFileReader.java:295)
at parquet.hadoop.ParquetFileReader$2.call(ParquetFileReader.java:179)
at parquet.hadoop.ParquetFileReader$2.call(ParquetFileReader.java:175)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.ClassNotFoundException:
parquet.org.codehaus.jackson.JsonGenerationException
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 9 more
--
Uri Laserson, PhD
Data Scientist, Cloudera
Twitter/GitHub: @laserson
+1 617 910 0447
[email protected]
