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https://issues.apache.org/jira/browse/IGNITE-372?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladimir Ozerov closed IGNITE-372.
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> improve Ignite node Hadoop classpath composition reliability
> -------------------------------------------------------------
>
> Key: IGNITE-372
> URL: https://issues.apache.org/jira/browse/IGNITE-372
> Project: Ignite
> Issue Type: Improvement
> Affects Versions: sprint-1
> Reporter: Ivan Veselovsky
> Assignee: Ivan Veselovsky
> Priority: Minor
>
> User encountered a problem with Hadoop mapred jobs execution when incorrectly
> set in environment
> {code}
> export HADOOP_MAPRED_HOME=${HADOOP_HOME}
> export HADOOP_COMMON_HOME=${HADOOP_HOME}
> export HADOOP_HDFS_HOME=${HADOOP_HOME}
> {code}
> . That caused incorrect GRIDGAIN_HADOOP_CLASSPATH and , as a consequence, job
> failure with NoClassDefFoundError.
> Suggestions to improve reliability and tracability of the Hadoop classpath
> composition:
> 1) Simplify the logic of the classpath composition: do not take into account
> HADOOP_COMMON_HOME, HADOOP_MAPRED_HOME, HADOOP_HDFS_HOME, also do not read
> /etc/default/hadoop .
> Compose the classpath basing only on the value of $HADOOP_HOME.
> 2) when GRIDGAIN_HADOOP_CLASSPATH composed, print out its value if ignite.sh
> as run with "-v" option.
> 3) add the Hadoop classpath validation as a part of Node startup sequence:
> try to find (load?) at least one class from each of the key Hadoop APIs (FS,
> MapRed, Yarn API).
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