diff --git a/hadoop/2.6.0/Dockerfile b/hadoop/2.6.0/Dockerfile
index 055b2bd..ab40f05 100644
--- a/hadoop/2.6.0/Dockerfile
+++ b/hadoop/2.6.0/Dockerfile
@@ -33,7 +33,8 @@ ENV YARN_LOG_DIR /logs
 RUN sed -i 's/export JAVA_HOME=${JAVA_HOME}/export JAVA_HOME=\/usr\/local\/jdk1.7.0_80/g' /usr/local/$HADOOP_VERSION/etc/hadoop/hadoop-env.sh && \
     echo "export HADOOP_LOG_DIR=/logs" >> /usr/local/$HADOOP_VERSION/etc/hadoop/hadoop-env.sh && \
     echo "export HADOOP_PREFIX=$HADOOP_HOME" >> /usr/local/$HADOOP_VERSION/etc/hadoop/hadoop-env.sh && \
-    sed -e "1 i\export YARN_LOG_DIR=\/logs" /usr/local/$HADOOP_VERSION/etc/hadoop/yarn-env.sh > /usr/local/$HADOOP_VERSION/etc/hadoop/yarn-env.sh
+    sed -e "1 i\export YARN_LOG_DIR=\/logs" $HADOOP_HOME/etc/hadoop/yarn-env.sh > $HADOOP_HOME/etc/hadoop/yarn-env.sh.bak && \
+    \mv $HADOOP_HOME/etc/hadoop/yarn-env.sh.bak $HADOOP_HOME/etc/hadoop/yarn-env.sh
 
 COPY conf/* /usr/local/$HADOOP_VERSION/etc/hadoop/
 
@@ -43,6 +44,6 @@ COPY start.sh /
 
 RUN chmod 777 /start.sh
 
-EXPOSE 22 50070 8020 8088
+EXPOSE 22 50070 8020 8088 8042
 
 CMD ["/start.sh"]
diff --git a/hadoop/README.md b/hadoop/README.md
index e48d82a..90b101e 100644
--- a/hadoop/README.md
+++ b/hadoop/README.md
@@ -14,6 +14,7 @@ docker run -d \
     -p 50070:50070 \
     -p 8020:8020 \
     -p 8088:8088 \
+    -p 8042:8042 \
     -v $PWD/conf:/conf \
     -v $PWD/data:/data \
     -v $PWD/logs:/logs \