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https://issues.apache.org/jira/browse/HADOOP-1690?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12518207
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dhruba borthakur commented on HADOOP-1690:
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There is a programmatic way to retrieve version info from the hadoop client.
The API is documented here:
http://lucene.apache.org/hadoop/api/org/apache/hadoop/util/VersionInfo.html
> No way to programmatically determine hadoop version from binary distribution
> ----------------------------------------------------------------------------
>
> Key: HADOOP-1690
> URL: https://issues.apache.org/jira/browse/HADOOP-1690
> Project: Hadoop
> Issue Type: New Feature
> Reporter: Marco Nicosia
> Priority: Minor
>
> Currently, there's no way (short of starting a hadoop daemon and looking at a
> web page) to tell what version of Hadoop binaries are installed in a given
> directory. It'd be great if there were a VERSION file or at least a
> hadoop-daemon.sh version directive.
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