peng.jianhua created SQOOP-3102:
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Summary: There are two questions in the sqoop_server_classpath_set
function of the sqoop.sh
Key: SQOOP-3102
URL: https://issues.apache.org/jira/browse/SQOOP-3102
Project: Sqoop
Issue Type: Bug
Components: sqoop2-dist
Reporter: peng.jianhua
Priority: Minor
There are two questions in the sqoop_server_classpath_set function of the
sqoop.sh
$HADOOP_YARN_HOME and $HADOOP_HDFS_HOME were used as following in start-all.sh
of the hadoop:
# start hdfs daemons if hdfs is present
if [ -f "${HADOOP_HDFS_HOME}"/sbin/start-dfs.sh ]; then
"${HADOOP_HDFS_HOME}"/sbin/start-dfs.sh --config $HADOOP_CONF_DIR
fi
# start yarn daemons if yarn is present
if [ -f "${HADOOP_YARN_HOME}"/sbin/start-yarn.sh ]; then
"${HADOOP_YARN_HOME}"/sbin/start-yarn.sh --config $HADOOP_CONF_DIR
fi
Based on above logic the $HADOOP_YARN_HOME and $HADOOP_HDFS_HOME must equal to
$HADOOP_HOME. And they must be set as environment variable.
In sqoop2 they were used as following in sqoop_server_classpath_set function
for sqoop.sh file.
HADOOP_COMMON_HOME=${HADOOP_COMMON_HOME:-${HADOOP_HOME}/share/hadoop/common}
HADOOP_HDFS_HOME=${HADOOP_HDFS_HOME:-${HADOOP_HOME}/share/hadoop/hdfs}
HADOOP_MAPRED_HOME=${HADOOP_MAPRED_HOME:-${HADOOP_HOME}/share/hadoop/mapreduce}
HADOOP_YARN_HOME=${HADOOP_YARN_HOME:-${HADOOP_HOME}/share/hadoop/yarn}
In above logic the HADOOP_HDFS_HOME will equal to HADOOP_HOME when
HADOOP_HDFS_HOME equal to $HADOOP_HOME in environment variable . The
HADOOP_YARN_HOME will equal to HADOOP_HOME when HADOOP_YARN_HOME was set to
$HADOOP_HOME in environment variable also.
As a result, sqoop2 start failure.
We shouldn't only check whether HADOOP_HDFS_HOME is empty, but also directly
set HADOOP_HDFS_HOME=${HADOOP_HOME}/share/hadoop/hdfs and
HADOOP_YARN_HOME={HADOOP_HOME}/share/hadoop/yarn in sqoop_server_classpath_set
function for sqoop.sh file..
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