HADOOP-6453. Hadoop wrapper script shouldn't ignore an existing JAVA_LIBRARY_PATH. Contributed by Chad Metcalf.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@988219 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -208,6 +208,9 @@ Trunk (unreleased changes)
     HADOOP-6906.  FileContext copy() utility doesn't work with recursive
     copying of directories. (vinod k v via mahadev)
 
+    HADOOP-6453. Hadoop wrapper script shouldn't ignore an existing 
+    JAVA_LIBRARY_PATH. (Chad Metcalf via jghoman)
+
 Release 0.21.0 - Unreleased
 
   INCOMPATIBLE CHANGES

bin/hadoop-config.sh

@@ -182,14 +182,20 @@ unset IFS
 if $cygwin; then
   HADOOP_COMMON_HOME=`cygpath -w "$HADOOP_COMMON_HOME"`
   HADOOP_LOG_DIR=`cygpath -w "$HADOOP_LOG_DIR"`
+  JAVA_LIBRARY_PATH=`cygpath -w "$JAVA_LIBRARY_PATH"`
 fi
+
 # setup 'java.library.path' for native-hadoop code if necessary
-JAVA_LIBRARY_PATH=''
+
 if [ -d "${HADOOP_COMMON_HOME}/build/native" -o -d "${HADOOP_COMMON_HOME}/lib/native" ]; then
   JAVA_PLATFORM=`CLASSPATH=${CLASSPATH} ${JAVA} -Xmx32m ${HADOOP_JAVA_PLATFORM_OPTS} org.apache.hadoop.util.PlatformName | sed -e "s/ /_/g"`
   
   if [ -d "$HADOOP_COMMON_HOME/build/native" ]; then
-    JAVA_LIBRARY_PATH=${HADOOP_COMMON_HOME}/build/native/${JAVA_PLATFORM}/lib
+    if [ "x$JAVA_LIBRARY_PATH" != "x" ]; then
+        JAVA_LIBRARY_PATH=${JAVA_LIBRARY_PATH}:${HADOOP_CORE_HOME}/build/native/${JAVA_PLATFORM}/lib
+    else
+        JAVA_LIBRARY_PATH=${HADOOP_CORE_HOME}/build/native/${JAVA_PLATFORM}/lib
+    fi
   fi
   
   if [ -d "${HADOOP_COMMON_HOME}/lib/native" ]; then