Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/11152#discussion_r60034499
--- Diff: docs/monitoring.md ---
@@ -222,17 +222,40 @@ both running applications, and in the history server.
The endpoints are mounted
for the history server, they would typically be accessible at
`http://<server-url>:18080/api/v1`, and
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.
+
<table class="table">
<tr><th>Endpoint</th><th>Meaning</th></tr>
<tr>
<td><code>/applications</code></td>
<td>A list of all applications</td>
</tr>
<tr>
+ <td></td>
+ <td><code>?status=[completed|running]</code> list only applications in
the chosen state</td>
--- End diff --
And just sense-checking -- all these params are definitely already
supported in 2.0, you're just documenting them?
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