From 95abbe537751929353d18b733f6267c3287b6047 Mon Sep 17 00:00:00 2001
From: Weiqing Yang <yangweiqing001@gmail.com>
Date: Wed, 20 Jul 2016 14:26:26 +0100
Subject: [SPARK-15923][YARN] Spark Application rest api returns 'no such app:
 …
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## What changes were proposed in this pull request?
Update monitoring.md.

…<appId>'

Author: Weiqing Yang <yangweiqing001@gmail.com>

Closes #14163 from Sherry302/master.
---
 docs/monitoring.md | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'docs')

diff --git a/docs/monitoring.md b/docs/monitoring.md
index fa6c899a40..ee932cfc6d 100644
--- a/docs/monitoring.md
+++ b/docs/monitoring.md
@@ -225,9 +225,10 @@ for the history server, they would typically be accessible at `http://<server-ur
 for a running application, at `http://localhost:4040/api/v1`.
 
 In the API, an application is referenced by its application ID, `[app-id]`.
-When running on YARN, each application may have multiple attempts; each identified by their `[attempt-id]`.
-In the API listed below, `[app-id]` will actually be `[base-app-id]/[attempt-id]`,
-where `[base-app-id]` is the YARN application ID.
+When running on YARN, each application may have multiple attempts, but there are attempt IDs
+only for applications in cluster mode, not applications in client mode. Applications in YARN cluster mode
+can be identified by their `[attempt-id]`. In the API listed below, when running in YARN cluster mode,
+`[app-id]` will actually be `[base-app-id]/[attempt-id]`, where `[base-app-id]` is the YARN application ID.
 
 <table class="table">
   <tr><th>Endpoint</th><th>Meaning</th></tr>
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