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https://issues.apache.org/jira/browse/IGNITE-3184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladimir Ozerov closed IGNITE-3184.
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> Hadoop: HADOOP_HOME should not be required if all other environment variables
> are set.
> --------------------------------------------------------------------------------------
>
> Key: IGNITE-3184
> URL: https://issues.apache.org/jira/browse/IGNITE-3184
> Project: Ignite
> Issue Type: Bug
> Components: hadoop
> Affects Versions: 1.5.0.final
> Reporter: Vladimir Ozerov
> Assignee: Vladimir Ozerov
> Fix For: 1.7
>
>
> *Problem*
> Ignite internals require three pieces to create correct Hadoop classpath:
> 1) Path to common JARs;
> 2) Path to HDFS JARs;
> 3) Path map-reduce JARs.
> These three paths could be set with environment variables HADOOP_COMMON_HOME,
> HADOOP_HDFS_HOME and HADOOP_MAPRED_HOME respectively.
> When all of them are set, HADOOP_HOME is no longer needed, but we will throw
> an exception in this case. We should not do that.
> *Solution*
> Throw exception only in case we cannot resolve any of these paths.
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