CompositeInputFormat is unable to parse InputFormat classes with names
containing '_' or '$'
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Key: HADOOP-3705
URL: https://issues.apache.org/jira/browse/HADOOP-3705
Project: Hadoop Core
Issue Type: Bug
Components: mapred
Affects Versions: 0.17.0
Reporter: Jingkei Ly
If I try to set "mapred.join.expr" with my own InputFormat class that contains
a '_' character (or if my InputFormat class is a static inner class), I get
the following exception thrown when I run my MapReduce job:
Exception in thread "main" java.io.IOException: Unexpected: 95
at org.apache.hadoop.mapred.join.Parser$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.
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