From 30d03095eb4c5ee13e6da245acafc60e1366f3cd Mon Sep 17 00:00:00 2001
From: Thanh Nguyen <thanhnd.fit@gmail.com>
Date: Mon, 26 Aug 2024 11:44:21 -0500
Subject: [PATCH] update resource manager starting script

---
 hadoop/nodemanager/run.sh | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/hadoop/nodemanager/run.sh b/hadoop/nodemanager/run.sh
index bf8a39d..455945d 100644
--- a/hadoop/nodemanager/run.sh
+++ b/hadoop/nodemanager/run.sh
@@ -1,3 +1,21 @@
 #!/bin/bash
 
+check_namenode() {
+  safe_mode_status=$(hdfs dfsadmin -safemode get | grep 'Safe mode is OFF')
+  if [[ $safe_mode_status == *"Safe mode is OFF"* ]]; then
+    echo "NameNode is out of Safe Mode."
+    return 0
+  else
+    echo "NameNode is still in Safe Mode. Waiting..."
+    return 1
+  fi
+}
+
+# Wait for NameNode to leave Safe Mode
+until check_namenode; do
+  sleep 10
+done
+
+echo "Starting ResourceManager..."
+
 $HADOOP_HOME/bin/yarn --config $HADOOP_CONF_DIR nodemanager