[HADOOP-5805] problem using top level s3 buckets as input/output directories

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.18.3
• Fix Version/s: 0.21.0
• Component/s: fs/s3

Environment

ec2, cloudera AMI, 20 nodes

• Hadoop Flags: Reviewed
• Assignee: Ian Nowland
• Reporter: Arun Jacob
• Created: 11/May/09 17:35
• Updated: 24/Aug/10 20:37
• Resolved: 28/May/09 16:44

Description

When I specify top level s3 buckets as input or output directories, I get the following exception.

hadoop jar subject-map-reduce.jar s3n://infocloud-input s3n://infocloud-output

java.lang.IllegalArgumentException: Path must be absolute: s3n://infocloud-output
at org.apache.hadoop.fs.s3native.NativeS3FileSystem.pathToKey(NativeS3FileSystem.java:246)
at org.apache.hadoop.fs.s3native.NativeS3FileSystem.getFileStatus(NativeS3FileSystem.java:319)
at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:667)
at org.apache.hadoop.mapred.FileOutputFormat.checkOutputSpecs(FileOutputFormat.java:109)
at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:738)
at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1026)
at com.evri.infocloud.prototype.subjectmapreduce.SubjectMRDriver.run(SubjectMRDriver.java:63)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at com.evri.infocloud.prototype.subjectmapreduce.SubjectMRDriver.main(SubjectMRDriver.java:25)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.util.RunJar.main(RunJar.java:155)
at org.apache.hadoop.mapred.JobShell.run(JobShell.java:54)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
at org.apache.hadoop.mapred.JobShell.main(JobShell.java:68)

The workaround is to specify input/output buckets with sub-directories:

hadoop jar subject-map-reduce.jar s3n://infocloud-input/input-subdir s3n://infocloud-output/output-subdir