spark git commit: [SPARK-20218][DOC][APP-ID] applications//stages' in REST API, add description.

[srowen]

Repository: spark
Updated Branches:
  refs/heads/master 1a52a6237 -> 9e0893b53


[SPARK-20218][DOC][APP-ID] applications//stages' in REST API,add description.

## What changes were proposed in this pull request?

1. '/applications/[app-id]/stages' in rest api.status should add description 
'?status=[active|complete|pending|failed] list only stages in the state.'

Now the lack of this description, resulting in the use of this api do not know 
the use of the status through the brush stage list.

2.'/applications/[app-id]/stages/[stage-id]' in REST API,remove redundant 
description ‘?status=[active|complete|pending|failed] list only stages in the 
state.’.
Because only one stage is determined based on stage-id.

code:
  GET
  def stageList(QueryParam("status") statuses: JList[StageStatus]): 
Seq[StageData] = {
    val listener = ui.jobProgressListener
    val stageAndStatus = AllStagesResource.stagesAndStatus(ui)
    val adjStatuses = {
      if (statuses.isEmpty()) {
        Arrays.asList(StageStatus.values(): _*)
      } else {
        statuses
      }
    };

## How was this patch tested?

manual tests

Please review http://spark.apache.org/contributing.html before opening a pull 
request.

Author: 郭小龙 10207633 <guo.xiaolo...@zte.com.cn>

Closes #17534 from guoxiaolongzte/SPARK-20218.


Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/9e0893b5
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/9e0893b5
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/9e0893b5

Branch: refs/heads/master
Commit: 9e0893b53d68f777c1f3fb0a67820424a9c253ab
Parents: 1a52a62
Author: 郭小龙 10207633 <guo.xiaolo...@zte.com.cn>
Authored: Fri Apr 7 13:03:07 2017 +0100
Committer: Sean Owen <so...@cloudera.com>
Committed: Fri Apr 7 13:03:07 2017 +0100

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 docs/monitoring.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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http://git-wip-us.apache.org/repos/asf/spark/blob/9e0893b5/docs/monitoring.md
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diff --git a/docs/monitoring.md b/docs/monitoring.md
index 4d0617d..da95438 100644
--- a/docs/monitoring.md
+++ b/docs/monitoring.md
@@ -299,12 +299,12 @@ can be identified by their `[attempt-id]`. In the API 
listed below, when running
   <tr>
     <td><code>/applications/[app-id]/stages</code></td>
     <td>A list of all stages for a given application.</td>
+    <br><code>?status=[active|complete|pending|failed]</code> list only stages 
in the state.
   </tr>
   <tr>
     <td><code>/applications/[app-id]/stages/[stage-id]</code></td>
     <td>
       A list of all attempts for the given stage.
-      <br><code>?status=[active|complete|pending|failed]</code> list only 
stages in the state.
     </td>
   </tr>
   <tr>


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