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Posted to common-issues@hadoop.apache.org by "Raja Aluri (JIRA)" <ji...@apache.org> on 2013/07/02 20:37:20 UTC

[jira] [Created] (HADOOP-9685) hadoop-config.cmd: builds a classpath that is too long on windows

Raja Aluri created HADOOP-9685:
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             Summary: hadoop-config.cmd: builds a classpath that is too long on windows
                 Key: HADOOP-9685
                 URL: https://issues.apache.org/jira/browse/HADOOP-9685
             Project: Hadoop Common
          Issue Type: Bug
          Components: bin
    Affects Versions: 1-win
            Reporter: Raja Aluri
            Assignee: Raja Aluri
             Fix For: 1-win


hadoop-config.cmd, sets the class path by listing each jar file to the CLASAPATH. Many times the downstream components use hadoop_config.cmd to set the CLASAPATH for hadoop jars. After adding their own class path, many times the classpath length is hitting the windows command lenght limit.
We should try to use classpath wildcards to reduce the length of the classpath.
http://docs.oracle.com/javase/6/docs/technotes/tools/windows/classpath.html



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