hive cli启动判断hadoop version的问题

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# Make sure we're using a compatible version of Hadoop　　
if [ "x$HADOOP_VERSION" == "x" ]; then
　　
    HADOOP_VERSION=$($HADOOP version | awk '{if (NR == 1) {print $2;}}');
　　
fi
　　
echo "hadoop_version is $HADOOP_VERSION"
　　
# Save the regex to a var to workaround quoting incompatabilities
　　
# between Bash 3.1 and 3.2
　　
hadoop_version_re="^([[:digit:]]+)\.([[:digit:]]+)(\.([[:digit:]]+))?.*$"
　　
if [[ "$HADOOP_VERSION" =~ $hadoop_version_re ]]; then
　　
    hadoop_major_ver=${BASH_REMATCH[1]}
　　
    hadoop_minor_ver=${BASH_REMATCH[2]}
　　
    hadoop_patch_ver=${BASH_REMATCH[4]}
　　
else
　　
    echo "Unable to determine Hadoop version information."
　　
    echo "'hadoop version' returned:"
　　
    echo `$HADOOP version`
　　
    exit 5
　　
fi
　　
if [ "$hadoop_major_ver" -lt "1" -a  "$hadoop_minor_ver$hadoop_patch_ver" -lt "201" ]; then
　　
    echo "Hive requires Hadoop 0.20.x (x >= 1)."
　　
    echo "'hadoop version' returned:"
　　
    echo `$HADOOP version`
　　
    exit 6
　　
fi