From 5854a5964bf4dcefa2aa17ebd3a8fc7e9a2dc878 Mon Sep 17 00:00:00 2001
From: DrakopoulosAj <cs141020@uniwa.gr>
Date: Fri, 12 Jun 2020 18:53:27 +0000
Subject: [PATCH] Upload files to 'namenode'

---
 namenode/Dockerfile | 16 ++++++++++++++++
 namenode/run.sh     | 22 ++++++++++++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100644 namenode/Dockerfile
 create mode 100644 namenode/run.sh

diff --git a/namenode/Dockerfile b/namenode/Dockerfile
new file mode 100644
index 0000000..f5725dd
--- /dev/null
+++ b/namenode/Dockerfile
@@ -0,0 +1,16 @@
+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"]
diff --git a/namenode/run.sh b/namenode/run.sh
new file mode 100644
index 0000000..1140184
--- /dev/null
+++ b/namenode/run.sh
@@ -0,0 +1,22 @@
+#!/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