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https://issues.apache.org/jira/browse/YARN-1855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13940625#comment-13940625
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Ted Yu commented on YARN-1855:
------------------------------
I tried this:
{code}
Index:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/TestRMFailover.java
===================================================================
---
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/TestRMFailover.java
(revision 1579270)
+++
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/TestRMFailover.java
(working copy)
@@ -286,7 +286,8 @@
try {
Map<String, List<String>> map =
new URL(url).openConnection().getHeaderFields();
- fieldHeader = map.get(field).get(0);
+ List<String> lst = map.get(field);
+ if (lst != null) fieldHeader = lst.get(0);
} catch (Exception e) {
// throw new RuntimeException(e);
}
{code}
However, the next assertion fails:
{code}
header = getHeader("Refresh", rm2Url + "/ws/v1/cluster/apps");
assertTrue(header.contains("; url=" + rm1Url));
{code}
header was null.
> TestRMFailover#testRMWebAppRedirect fails in trunk
> --------------------------------------------------
>
> Key: YARN-1855
> URL: https://issues.apache.org/jira/browse/YARN-1855
> Project: Hadoop YARN
> Issue Type: Test
> Reporter: Ted Yu
>
> From https://builds.apache.org/job/Hadoop-Yarn-trunk/514/console :
> {code}
> testRMWebAppRedirect(org.apache.hadoop.yarn.client.TestRMFailover) Time
> elapsed: 5.39 sec <<< ERROR!
> java.lang.NullPointerException: null
> at
> org.apache.hadoop.yarn.client.TestRMFailover.testRMWebAppRedirect(TestRMFailover.java:269)
> {code}
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