Update apache-hadoop-introduction.md

hrasheed-msft · web-flow · commit 7867762c4b67 · 2020-03-02T12:45:49.000-06:00
updating title
diff --git a/articles/hdinsight/hadoop/apache-hadoop-introduction.md b/articles/hdinsight/hadoop/apache-hadoop-introduction.md
@@ -1,5 +1,5 @@
 ---
-title: What is the Apache Hadoop technology stack? - Azure HDInsight
+title: What are Apache Hadoop and MapReduce - Azure HDInsight
 description: An introduction to HDInsight, and the Apache Hadoop technology stack and components.
 author: hrasheed-msft
 ms.author: hrasheed
