[jira] [Created] (HDFS-6576) Datanode log is generating at root directory in security mode

["surendra singh lilhore (JIRA)" <ji...@apache.org>]

surendra singh lilhore created HDFS-6576:
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             Summary: Datanode log is generating at root directory in security mode
                 Key: HDFS-6576
                 URL: https://issues.apache.org/jira/browse/HDFS-6576
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: datanode
    Affects Versions: 2.4.0
            Reporter: surendra singh lilhore
            Priority: Minor


In hadoop-env.sh script we are exporting HADOOP_SECURE_DN_LOG_DIR , but in above line export statement for HADOOP_LOG_DIR is commented 
If in user environment HADOOP_LOG_DIR is not exported then HADOOP_SECURE_DN_LOG_DIR env variable will export with "/" value and DN will logs in root directory.

{noformat}
# Where log files are stored.  $HADOOP_HOME/logs by default.
#export HADOOP_LOG_DIR=${HADOOP_LOG_DIR}/$USER

# Where log files are stored in the secure data environment.
export HADOOP_SECURE_DN_LOG_DIR=${HADOOP_LOG_DIR}/${HADOOP_HDFS_USER}
{noformat}

I think we should comment this line.

In hadoop-daemon.sh already handled case if value of HADOOP_SECURE_DN_LOG_DIR and HADOOP_LOG_DIR is empty.

In hadoop-daemon.sh we assigning value of HADOOP_SECURE_DN_LOG_DIR in HADOOP_LOG_DIR and after that we are checking if HADOOP_LOG_DIR is empty then HADOOP_LOG_DIR  env variable export with "$HADOOP_PREFIX/logs" value
{noformat}
# Determine if we're starting a secure datanode, and if so, redefine appropriate variables
if [ "$command" == "datanode" ] && [ "$EUID" -eq 0 ] && [ -n "$HADOOP_SECURE_DN_USER" ]; then
  export HADOOP_PID_DIR=$HADOOP_SECURE_DN_PID_DIR
  export HADOOP_LOG_DIR=$HADOOP_SECURE_DN_LOG_DIR
  export HADOOP_IDENT_STRING=$HADOOP_SECURE_DN_USER
  starting_secure_dn="true"
fi

if [ "$HADOOP_IDENT_STRING" = "" ]; then
  export HADOOP_IDENT_STRING="$USER"
fi


# get log directory
if [ "$HADOOP_LOG_DIR" = "" ]; then
  export HADOOP_LOG_DIR="$HADOOP_PREFIX/logs"
fi 
{noformat}




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