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Posted to common-issues@hadoop.apache.org by "Chris Nauroth (JIRA)" <ji...@apache.org> on 2016/10/06 23:33:20 UTC

[jira] [Created] (HADOOP-13692) hadoop-aws should declare explicit dependency on Jackson 2 jars to prevent classpath conflicts.

Chris Nauroth created HADOOP-13692:
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             Summary: hadoop-aws should declare explicit dependency on Jackson 2 jars to prevent classpath conflicts.
                 Key: HADOOP-13692
                 URL: https://issues.apache.org/jira/browse/HADOOP-13692
             Project: Hadoop Common
          Issue Type: Sub-task
          Components: fs/s3
            Reporter: Chris Nauroth
            Assignee: Chris Nauroth
            Priority: Minor


If an end user's application has a dependency on hadoop-aws and no other Hadoop artifacts, then it picks up a transitive dependency on Jackson 2.5.3 jars through the AWS SDK.  This can cause conflicts at deployment time, because Hadoop has a dependency on version 2.2.3, and the 2 versions are not compatible with one another.  We can prevent this problem by changing hadoop-aws to declare explicit dependencies on the Jackson artifacts, at the version Hadoop wants.



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