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https://issues.apache.org/jira/browse/MAPREDUCE-4659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13457275#comment-13457275
]
Sandy Ryza commented on MAPREDUCE-4659:
---------------------------------------
What would be the best way to find the path to the hadoop common jar? The
script currently adds all the jars in certain folders.
# tarball layout
if [ -d "$HADOOP_HOME/webapps" ]; then
CLASSPATH=${CLASSPATH}:$HADOOP_HOME
fi
for f in $HADOOP_HOME/hadoop-core-*.jar; do
CLASSPATH=${CLASSPATH}:$f;
done
# add libs to CLASSPATH
for f in $HADOOP_HOME/lib/*.jar; do
CLASSPATH=${CLASSPATH}:$f;
done
if [ -d "$HADOOP_HOME/build/ivy/lib/Hadoop/common" ]; then
for f in $HADOOP_HOME/build/ivy/lib/Hadoop/common/*.jar; do
CLASSPATH=${CLASSPATH}:$f;
done
fi
for f in $HADOOP_HOME/lib/jsp-2.1/*.jar; do
CLASSPATH=${CLASSPATH}:$f;
done
for f in $HADOOP_HOME/hadoop-tools-*.jar; do
TOOL_PATH=${TOOL_PATH}:$f;
done
for f in $HADOOP_HOME/build/hadoop-tools-*.jar; do
TOOL_PATH=${TOOL_PATH}:$f;
done
> Confusing output when running "hadoop version" from one hadoop installation
> when HADOOP_HOME points to another
> --------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4659
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4659
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: client
> Affects Versions: 0.20.2
> Reporter: Sandy Ryza
>
> Hadoop version X is downloaded to ~/hadoop-x, and Hadoop version Y is
> downloaded to ~/hadoop-y. HADOOP_HOME is set to hadoop-x. A user running
> hadoop-y/bin/hadoop might expect to be running the hadoop-y jars, but,
> because of HADOOP_HOME, will actually be running hadoop-x jars.
> "hadoop version" could help clear this up a little by reporting the current
> HADOOP_HOME.
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