From cc91e21879e031bcd05316eabb856e67a51b191d Mon Sep 17 00:00:00 2001
From: Luc Bourlier <luc.bourlier@typesafe.com>
Date: Wed, 13 Jan 2016 11:45:13 -0800
Subject: [PATCH] [SPARK-12805][MESOS] Fixes documentation on Mesos run modes
The default run has changed, but the documentation didn't fully reflect the change.
Author: Luc Bourlier <luc.bourlier@typesafe.com>
Closes #10740 from skyluc/issue/mesos-modes-doc.
---
docs/running-on-mesos.md | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/docs/running-on-mesos.md b/docs/running-on-mesos.md
index 3193e17853..ed720f1039 100644
--- a/docs/running-on-mesos.md
+++ b/docs/running-on-mesos.md
@@ -202,7 +202,7 @@ where each application gets more or fewer machines as it ramps up and down, but
additional overhead in launching each task. This mode may be inappropriate for low-latency
requirements like interactive queries or serving web requests.
-To run in coarse-grained mode, set the `spark.mesos.coarse` property to false in your
+To run in fine-grained mode, set the `spark.mesos.coarse` property to false in your
[SparkConf](configuration.html#spark-properties):
{% highlight scala %}
@@ -266,13 +266,11 @@ See the [configuration page](configuration.html) for information on Spark config
<tr><th>Property Name</th><th>Default</th><th>Meaning</th></tr>
<tr>
<td><code>spark.mesos.coarse</code></td>
- <td>false</td>
+ <td>true</td>
<td>
- If set to <code>true</code>, runs over Mesos clusters in
- <a href="running-on-mesos.html#mesos-run-modes">"coarse-grained" sharing mode</a>,
- where Spark acquires one long-lived Mesos task on each machine instead of one Mesos task per
- Spark task. This gives lower-latency scheduling for short queries, but leaves resources in use
- for the whole duration of the Spark job.
+ If set to <code>true</code>, runs over Mesos clusters in "coarse-grained" sharing mode, where Spark acquires one long-lived Mesos task on each machine.
+ If set to <code>false</code>, runs over Mesos cluster in "fine-grained" sharing mode, where one Mesos task is created per Spark task.
+ Detailed information in <a href="running-on-mesos.html#mesos-run-modes">'Mesos Run Modes'</a>.
</td>
</tr>
<tr>
--
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