[HADOOP-3705] CompositeInputFormat is unable to parse InputFormat classes with names containing '_' or '$'

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.17.0
• Fix Version/s: 0.19.0
• Hadoop Flags: Reviewed
• Assignee: Christopher Douglas
• Reporter: Jingkei Ly
• Created: 07/Jul/08 14:36
• Updated: 08/Jul/09 16:52
• Resolved: 26/Aug/08 05:13

Description

If I try to set "mapred.join.expr" with my own InputFormat class that contains a '_' character (or if my InputFormat class is a static inner class), I get the following exception thrown when I run my MapReduce job:

Exception in thread "main" java.io.IOException: Unexpected: 95
at org.apache.hadoop.mapred.join.Parser$Lexer.next(Parser.java:161)
at org.apache.hadoop.mapred.join.Parser.parse(Parser.java:479)
at org.apache.hadoop.mapred.join.CompositeInputFormat.setFormat(CompositeInputFormat.java:77)
at org.apache.hadoop.mapred.join.CompositeInputFormat.validateInput(CompositeInputFormat.java:118)
at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:705)
at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:973)

If the class contains '$' the exception reads Unexpected: 95.