Github user kwmonroe commented on a diff in the pull request:
https://github.com/apache/bigtop/pull/137#discussion_r81859067
--- Diff: bigtop-packages/src/charm/zeppelin/layer-zeppelin/README.md ---
@@ -0,0 +1,119 @@
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+ The ASF licenses this file to You under the Apache License, Version 2.0
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+
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+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+## Overview
+
+Apache Zeppelin is a web-based notebook that enables interactive data
analytics.
+You can make beautiful data-driven, interactive, and collaborative
documents
+with SQL, Scala and more.
+
+As a Multi-purpose Notebook, Apache Zeppelin is the place for interactive:
+
+ * Data Ingestion
+ * Data Discovery
+ * Data Analytics
+ * Data Visualization & Collaboration
+
+
+## Usage
+
+This charm is intended to be deployed alongside one of the
+[big data bundles](https://jujucharms.com/u/bigdata-charmers/#bundles).
+For example:
+
+ juju deploy hadoop-processing
+
+_**Note**: The above assumes Juju 2.0 or greater. If using an earlier
version
+of Juju, the syntax is `juju quickstart cs:bundle/hadoop-processing`._
+
+Now add Zeppelin and expose the web interface:
+
+ juju deploy zeppelin
+ juju expose zeppelin
+
+Now relate Zeppelin to Java and the Hadoop cluster:
+
+ juju add-relation zeppelin openjdk
--- End diff --
Openjdk is optional now and won't be present in the Bigtop bundles... which
will make this `add-relation` step fail. Yank it (and the Java comment above).
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