spark git commit: [SPARK-9012] [WEBUI] Escape Accumulators in the task table

[sarutak]

Repository: spark
Updated Branches:
  refs/heads/master 14935d846 -> adb33d366


[SPARK-9012] [WEBUI] Escape Accumulators in the task table

If running the following codes, the task table will be broken because 
accumulators aren't escaped.
```
val a = sc.accumulator(1, "<table>")
sc.parallelize(1 to 10).foreach(i => a += i)
```

Before this fix,

<img width="1348" alt="screen shot 2015-07-13 at 8 02 44 pm" 
src="https://cloud.githubusercontent.com/assets/1000778/8649295/b17c491e-299b-11e5-97ee-4e6a64074c4f.png";>

After this fix,

<img width="1355" alt="screen shot 2015-07-13 at 8 14 32 pm" 
src="https://cloud.githubusercontent.com/assets/1000778/8649337/f9e9c9ec-299b-11e5-927e-35c0a2f897f5.png";>

Author: zsxwing <zsxw...@gmail.com>

Closes #7369 from zsxwing/SPARK-9012 and squashes the following commits:

a83c9b6 [zsxwing] Escape Accumulators in the task table


Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/adb33d36
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/adb33d36
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/adb33d36

Branch: refs/heads/master
Commit: adb33d3665770daf2ccb8915d19e198be9dc3b47
Parents: 14935d8
Author: zsxwing <zsxw...@gmail.com>
Authored: Wed Jul 15 17:30:57 2015 +0900
Committer: Kousuke Saruta <saru...@oss.nttdata.co.jp>
Committed: Wed Jul 15 17:30:57 2015 +0900

----------------------------------------------------------------------
 core/src/main/scala/org/apache/spark/ui/jobs/StagePage.scala | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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http://git-wip-us.apache.org/repos/asf/spark/blob/adb33d36/core/src/main/scala/org/apache/spark/ui/jobs/StagePage.scala
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diff --git a/core/src/main/scala/org/apache/spark/ui/jobs/StagePage.scala 
b/core/src/main/scala/org/apache/spark/ui/jobs/StagePage.scala
index ff0a339..27b82aa 100644
--- a/core/src/main/scala/org/apache/spark/ui/jobs/StagePage.scala
+++ b/core/src/main/scala/org/apache/spark/ui/jobs/StagePage.scala
@@ -692,7 +692,9 @@ private[ui] class StagePage(parent: StagesTab) extends 
WebUIPage("stage") {
       val gettingResultTime = getGettingResultTime(info, currentTime)
 
       val maybeAccumulators = info.accumulables
-      val accumulatorsReadable = maybeAccumulators.map{acc => s"${acc.name}: 
${acc.update.get}"}
+      val accumulatorsReadable = maybeAccumulators.map { acc =>
+        StringEscapeUtils.escapeHtml4(s"${acc.name}: ${acc.update.get}")
+      }
 
       val maybeInput = metrics.flatMap(_.inputMetrics)
       val inputSortable = maybeInput.map(_.bytesRead.toString).getOrElse("")


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