spark git commit: [SPARK-20354][CORE][REST-API] When I request access to the 'http: //ip:port/api/v1/applications' link, return 'sparkUser' is empty in REST API.

[vanzin]

Repository: spark
Updated Branches:
  refs/heads/master 321b4f03b -> 1f81dda37


[SPARK-20354][CORE][REST-API] When I request access to the 'http: 
//ip:port/api/v1/applications' link, return 'sparkUser' is empty in REST API.

## What changes were proposed in this pull request?

When I request access to the 'http: //ip:port/api/v1/applications' link, get 
the json. I need the 'sparkUser' field specific value, because my Spark big 
data management platform needs to filter through this field which user submits 
the application to facilitate my administration and query, but the current 
return of the json string is empty, causing me this Function can not be 
achieved, that is, I do not know who the specific application is submitted by 
this REST Api.

**current return json:**
[ {
  "id" : "app-20170417152053-0000",
  "name" : "KafkaWordCount",
  "attempts" : [ {
    "startTime" : "2017-04-17T07:20:51.395GMT",
    "endTime" : "1969-12-31T23:59:59.999GMT",
    "lastUpdated" : "2017-04-17T07:20:51.395GMT",
    "duration" : 0,
    **"sparkUser" : "",**
    "completed" : false,
    "endTimeEpoch" : -1,
    "startTimeEpoch" : 1492413651395,
    "lastUpdatedEpoch" : 1492413651395
  } ]
} ]

**When I fix this question, return json:**
[ {
  "id" : "app-20170417154201-0000",
  "name" : "KafkaWordCount",
  "attempts" : [ {
    "startTime" : "2017-04-17T07:41:57.335GMT",
    "endTime" : "1969-12-31T23:59:59.999GMT",
    "lastUpdated" : "2017-04-17T07:41:57.335GMT",
    "duration" : 0,
    **"sparkUser" : "mr",**
    "completed" : false,
    "startTimeEpoch" : 1492414917335,
    "endTimeEpoch" : -1,
    "lastUpdatedEpoch" : 1492414917335
  } ]
} ]

## 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>
Author: guoxiaolong <guo.xiaolo...@zte.com.cn>
Author: guoxiaolongzte <guo.xiaolo...@zte.com.cn>

Closes #17656 from guoxiaolongzte/SPARK-20354.


Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/1f81dda3
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/1f81dda3
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/1f81dda3

Branch: refs/heads/master
Commit: 1f81dda37cfc2049fabd6abd93ef3720d0aa03ea
Parents: 321b4f0
Author: 郭小龙 10207633 <guo.xiaolo...@zte.com.cn>
Authored: Tue Apr 18 10:02:21 2017 -0700
Committer: Marcelo Vanzin <van...@cloudera.com>
Committed: Tue Apr 18 10:02:21 2017 -0700

----------------------------------------------------------------------
 core/src/main/scala/org/apache/spark/ui/SparkUI.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/spark/blob/1f81dda3/core/src/main/scala/org/apache/spark/ui/SparkUI.scala
----------------------------------------------------------------------
diff --git a/core/src/main/scala/org/apache/spark/ui/SparkUI.scala 
b/core/src/main/scala/org/apache/spark/ui/SparkUI.scala
index 7d31ac5..bf4cf79 100644
--- a/core/src/main/scala/org/apache/spark/ui/SparkUI.scala
+++ b/core/src/main/scala/org/apache/spark/ui/SparkUI.scala
@@ -117,7 +117,7 @@ private[spark] class SparkUI private (
         endTime = new Date(-1),
         duration = 0,
         lastUpdated = new Date(startTime),
-        sparkUser = "",
+        sparkUser = getSparkUser,
         completed = false
       ))
     ))


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