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Posted to common-dev@hadoop.apache.org by "Tom White (JIRA)" <ji...@apache.org> on 2010/06/02 23:57:57 UTC

[jira] Created: (HADOOP-6800) Harmonize JAR library versions

Harmonize JAR library versions
------------------------------

                 Key: HADOOP-6800
                 URL: https://issues.apache.org/jira/browse/HADOOP-6800
             Project: Hadoop Common
          Issue Type: Bug
            Reporter: Tom White
            Priority: Blocker
             Fix For: 0.21.0


Currently, multiple versions of the same library JAR are being pulled in for various reasons.
* Within the same project, multiple versions of the same JAR are pulled in. E.g. Avro (used by Common) depends on Commons Lang 2.5 while Common depends on Commons Lang 2.4.
* Dependent subprojects use different versions. E.g. Common depends on Avro 1.3.2 while MapReduce depends on 1.3.0. Since MapReduce depends on Common, this has the potential to cause a problem at runtime.

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