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From "Deepak Subhramanian (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CRUNCH-220) Crunch
Date Mon, 17 Jun 2013 10:50:20 GMT
Deepak Subhramanian created CRUNCH-220:
------------------------------------------

             Summary: Crunch
                 Key: CRUNCH-220
                 URL: https://issues.apache.org/jira/browse/CRUNCH-220
             Project: Crunch
          Issue Type: Bug
          Components: IO
    Affects Versions: 0.6.0
         Environment: Cloudera Hadoop with Amazon S3
            Reporter: Deepak Subhramanian
            Priority: Minor


I am trying to use crunch to read file from S3 and write to S3. I am able to read the file
.But giving an error while writing to s3.  Not sure if it is a bug or I am missing a hadoop
configuration.  I am able to read from s3 and write to a local file or hdfs directly.  Here
is the code and error. I am passing s3 key and secret as parameters.  

PCollection<String> lines =pipeline.read(From.sequenceFile(inputdir,   Writables.strings()));
    
    PCollection<String> textline = lines.parallelDo(new DoFn<String, String>()
{
        public void process(String line, Emitter<String> emitter) {
            if (headerNotWritten) {
              
                //emitter.emit("Writing Header");
                emitter.emit(table_header.getTable_header());
                emitter.emit(line);
                headerNotWritten =false;
                
            }else {
            emitter.emit(line);
            }
        }
      }, Writables.strings()); // Indicates the serialization format

    
    pipeline.writeTextFile(textline, outputdir);


 Exception in thread "main" java.lang.IllegalArgumentException: Wrong FS: s3n://bktname/testcsv,
expected: hdfs://ip-address.compute.internal
[ip-addresscompute.amazonaws.com] out: 	at org.apache.hadoop.fs.FileSystem.checkPath(FileSystem.java:410)
[ip-address-82.eu-west-1.compute.amazonaws.com] out: 	at org.apache.hadoop.hdfs.DistributedFileSystem.checkPath(DistributedFileSystem.java:106)
[ip-address-82.eu-west-1.compute.amazonaws.com] out: 	at org.apache.hadoop.hdfs.DistributedFileSystem.getPathName(DistributedFileSystem.java:162)
[ip-address-82.eu-west-1.compute.amazonaws.com] out: 	at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:558)
[ip-address-82.eu-west-1.compute.amazonaws.com] out: 	at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:797)
[ip-address-82.eu-west-1.compute.amazonaws.com] out: 	at org.apache.crunch.io.impl.FileTargetImpl.handleExisting(FileTargetImpl.java:133)
[ip-address-82.eu-west-1.compute.amazonaws.com] out: 	at org.apache.crunch.impl.mr.MRPipeline.write(MRPipeline.java:212)
[ip-address-82.eu-west-1.compute.amazonaws.com] out: 	at org.apache.crunch.impl.mr.MRPipeline.write(MRPipeline.java:200)
[ip-address-82.eu-west-1.compute.amazonaws.com] out: 	at org.apache.crunch.impl.mr.collect.PCollectionImpl.write(PCollectionImpl.java:132)
[ec2-79-125-102-82.eu-west-1.compute.amazonaws.com] out: 	at org.apache.crunch.impl.mr.MRPipeline.writeTextFile(MRPipeline.java:356)

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