Harmonize JAR library versions
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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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