[SPARK-3722][Docs]minor improvement and fix in docs

https://issues.apache.org/jira/browse/SPARK-3722

Author: WangTao <barneystinson@aliyun.com>

Closes #2579 from WangTaoTheTonic/docsWork and squashes the following commits:

6f91cec [WangTao] use more wording express
29d22fa [WangTao] delete the specified version link
34cb4ea [WangTao] Update running-on-yarn.md
4ee1a26 [WangTao] minor improvement and fix in docs

1 files changed, 3 insertions, 3 deletions

diff --git a/docs/running-on-yarn.md b/docs/running-on-yarn.md
index 2f7e4981e5..dfe2db4b3f 100644
--- a/docs/running-on-yarn.md
+++ b/docs/running-on-yarn.md
@@ -39,7 +39,7 @@ Most of the configs are the same for Spark on YARN as for other deployment modes
   <td><code>spark.yarn.preserve.staging.files</code></td>
   <td>false</td>
   <td>
-    Set to true to preserve the staged files (Spark jar, app jar, distributed cache files) at the end of the job rather then delete them.
+    Set to true to preserve the staged files (Spark jar, app jar, distributed cache files) at the end of the job rather than delete them.
   </td>
 </tr>
 <tr>
@@ -159,7 +159,7 @@ For example:
         lib/spark-examples*.jar \
         10
 
-The above starts a YARN client program which starts the default Application Master. Then SparkPi will be run as a child thread of Application Master. The client will periodically poll the Application Master for status updates and display them in the console. The client will exit once your application has finished running.  Refer to the "Viewing Logs" section below for how to see driver and executor logs.
+The above starts a YARN client program which starts the default Application Master. Then SparkPi will be run as a child thread of Application Master. The client will periodically poll the Application Master for status updates and display them in the console. The client will exit once your application has finished running.  Refer to the "Debugging your Application" section below for how to see driver and executor logs.
 
 To launch a Spark application in yarn-client mode, do the same, but replace "yarn-cluster" with "yarn-client".  To run spark-shell:
 
@@ -181,7 +181,7 @@ In YARN terminology, executors and application masters run inside "containers".
 
     yarn logs -applicationId <app ID>
     
-will print out the contents of all log files from all containers from the given application.
+will print out the contents of all log files from all containers from the given application. You can also view the container log files directly in HDFS using the HDFS shell or API. The directory where they are located can be found by looking at your YARN configs (`yarn.nodemanager.remote-app-log-dir` and `yarn.nodemanager.remote-app-log-dir-suffix`).
 
 When log aggregation isn't turned on, logs are retained locally on each machine under `YARN_APP_LOGS_DIR`, which is usually configured to `/tmp/logs` or `$HADOOP_HOME/logs/userlogs` depending on the Hadoop version and installation. Viewing logs for a container requires going to the host that contains them and looking in this directory.  Subdirectories organize log files by application ID and container ID.