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From Greg Troyan <Greg.Tro...@zecco.net>
Subject Help with "Hadoop common not found" and bug HADOOP-6953
Date Mon, 29 Nov 2010 23:04:55 GMT
Like others, I am experiencing the Hadoop common not found" error when starting hadoop using
start-dfs.sh under Hadoop v0.21.

I have found this link that shows how to edit hdfs-config.sh and mapred-config.sh:

https://issues.apache.org/jira/browse/HADOOP-6953

But it's still not working for me.

I've added the code from that link to both files to no effect.

To start with the most obvious: Could it be that I've pasted the code in the wrong place in
the files? (I basically plopped the code at the beginning of the file.)

Here's what my hdsf-config.sh looks like:

this="${BASH_SOURCE-$0}"
while [ -h "$this" ]; do
ls=`ls -ld "$this"`
link=`expr "$ls" : '.-> (.)$'`
if expr "$link" : './.' > /dev/null; then
this="$link"
else
this=`dirname "$this"`/"$link"
fi
done

# convert relative path to absolute path
common_bin=`dirname "$this"`
script=`basename "$this"`
common_bin=`cd "$common_bin"; pwd`
this="$common_bin/$script"

# the root of the Hadoop installation
#TODO: change the env variable when dir structure is changed
export HADOOP_HOME=`dirname "$this"`/..
export HADOOP_COMMON_HOME="${HADOOP_HOME}"

bin=`dirname "$0"`
bin=`cd "$bin"; pwd`

export HADOOP_HDFS_HOME="${HADOOP_HDFS_HOME:-$bin/..}"

if [ -d "${HADOOP_COMMON_HOME}" ]; then
  . "$HADOOP_COMMON_HOME"/bin/hadoop-config.sh
elif [ -d "${HADOOP_HOME}" ]; then
  . "$HADOOP_HOME"/bin/hadoop-config.sh
else
  echo "Hadoop common not found."
  exit
fi





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