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https://issues.apache.org/jira/browse/HADOOP-18676?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andras Katona resolved HADOOP-18676.
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Resolution: Fixed
> Include jettison as direct dependency of hadoop-common
> ------------------------------------------------------
>
> Key: HADOOP-18676
> URL: https://issues.apache.org/jira/browse/HADOOP-18676
> Project: Hadoop Common
> Issue Type: Task
> Components: common
> Reporter: Andras Katona
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
>
> When hadoop common is pulled in outside of hadoop project, the wrong version
> of jettison is coming as the dependency management of hadoop-project doesn't
> apply this case.
> So it's not enough just to upgrade the version in dependency management. When
> jettison is coming only as transitive, whoever is pulling in that hadoop
> library, will still get the wrong jettison.
> example:
> hadoop-common
> {noformat}
> org.example:untitled:jar:1.0-SNAPSHOT
> \- org.apache.hadoop:hadoop-common:jar:3.4.0-SNAPSHOT:compile
> ...
> +- com.github.pjfanning:jersey-json:jar:1.20:compile
> | +- org.codehaus.jettison:jettison:jar:1.1:compile
> ...
> {noformat}
> When the module is a library (so it will be used outside of the actual
> project), the correct dependency must be declared as direct dependency (and
> optionally excluding from the dependency where it came from originally).
> jettison should be added as direct dependency
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