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-rw-r--r--docs/monitoring.md16
1 files changed, 13 insertions, 3 deletions
diff --git a/docs/monitoring.md b/docs/monitoring.md
index 6fdf87b4be..5804e4f26c 100644
--- a/docs/monitoring.md
+++ b/docs/monitoring.md
@@ -114,8 +114,17 @@ The history server can be configured as follows:
<td>spark.history.retainedApplications</td>
<td>50</td>
<td>
- The number of application UIs to retain. If this cap is exceeded, then the oldest
- applications will be removed.
+ The number of applications to retain UI data for in the cache. If this cap is exceeded, then
+ the oldest applications will be removed from the cache. If an application is not in the cache,
+ it will have to be loaded from disk if its accessed from the UI.
+ </td>
+ </tr>
+ <tr>
+ <td>spark.history.ui.maxApplications</td>
+ <td>Int.MaxValue</td>
+ <td>
+ The number of applications to display on the history summary page. Application UIs are still
+ available by accessing their URLs directly even if they are not displayed on the history summary page.
</td>
</tr>
<tr>
@@ -242,7 +251,8 @@ can be identified by their `[attempt-id]`. In the API listed below, when running
<br>Examples:
<br><code>?minDate=2015-02-10</code>
<br><code>?minDate=2015-02-03T16:42:40.000GMT</code>
- <br><code>?maxDate=[date]</code> latest date/time to list; uses same format as <code>minDate</code>.</td>
+ <br><code>?maxDate=[date]</code> latest date/time to list; uses same format as <code>minDate</code>.
+ <br><code>?limit=[limit]</code> limits the number of applications listed.</td>
</tr>
<tr>
<td><code>/applications/[app-id]/jobs</code></td>