Upload files to 'namenode'

namenode/Dockerfile

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+FROM bde2020/hadoop-base:2.0.0-hadoop3.2.1-java8
+
+MAINTAINER Ivan Ermilov <ivan.s.ermilov@gmail.com>
+
+HEALTHCHECK CMD curl -f http://localhost:9870/ || exit 1
+
+ENV HDFS_CONF_dfs_namenode_name_dir=file:///hadoop/dfs/name
+RUN mkdir -p /hadoop/dfs/name
+VOLUME /hadoop/dfs/name
+
+ADD run.sh /run.sh
+RUN chmod a+x /run.sh
+
+EXPOSE 9870
+
+CMD ["/run.sh"]

namenode/run.sh

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+#!/bin/bash
+
+namedir=`echo $HDFS_CONF_dfs_namenode_name_dir | perl -pe 's#file://##'`
+if [ ! -d $namedir ]; then
+  echo "Namenode name directory not found: $namedir"
+  exit 2
+fi
+
+if [ -z "$CLUSTER_NAME" ]; then
+  echo "Cluster name not specified"
+  exit 2
+fi
+
+echo "remove lost+found from $namedir"
+rm -r $namedir/lost+found
+
+if [ "`ls -A $namedir`" == "" ]; then
+  echo "Formatting namenode name directory: $namedir"
+  $HADOOP_HOME/bin/hdfs --config $HADOOP_CONF_DIR namenode -format $CLUSTER_NAME
+fi
+
+$HADOOP_HOME/bin/hdfs --config $HADOOP_CONF_DIR namenode