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https://issues.apache.org/jira/browse/HADOOP-4695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12649612#action_12649612
]
Kan Zhang commented on HADOOP-4695:
-----------------------------------
This bug is caused by a rare event in which jetty called a configured filter
twice instead of only once. See the following error log.
{noformat}
2008-11-20 14:42:20,427 WARN http.HttpServer
(TestGlobalFilter.java:access(83)) - access http://localhost:40643/*
2008-11-20 14:42:20,429 INFO http.HttpServer
(TestGlobalFilter.java:doFilter(63)) - filtering /*
2008-11-20 14:42:20,431 WARN http.HttpServer
(TestGlobalFilter.java:access(97)) - urlstring=http://localhost:40643/*
java.io.FileNotFoundException: http://localhost:40643/*
at
sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1239)
at
org.apache.hadoop.http.TestGlobalFilter.access(TestGlobalFilter.java:89)
at
org.apache.hadoop.http.TestGlobalFilter.testServletFilter(TestGlobalFilter.java:137)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at
org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:421)
at
org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:912)
at
org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:766)
2008-11-20 14:42:20,434 WARN http.HttpServer
(TestGlobalFilter.java:access(83)) - access http://localhost:40643/*
2008-11-20 14:42:20,527 INFO http.HttpServer
(TestGlobalFilter.java:doFilter(63)) - filtering /*
2008-11-20 14:42:20,532 INFO http.HttpServer
(TestGlobalFilter.java:doFilter(63)) - filtering /*
2008-11-20 14:42:20,533 WARN http.HttpServer
(TestGlobalFilter.java:access(97)) - urlstring=http://localhost:40643/*
java.io.FileNotFoundException: http://localhost:40643/*
{noformat}
In the first case, the filter was invoked once for url /*, which is normal. In
the second case, the filter was invoked twice for the same url, which is an
abnormal behavior of jetty. I'm attaching a patch where the filter simply
returns after the first invocation to get around this issue.
> TestGlobalFilter.testServletFilter fails
> ----------------------------------------
>
> Key: HADOOP-4695
> URL: https://issues.apache.org/jira/browse/HADOOP-4695
> Project: Hadoop Core
> Issue Type: Bug
> Reporter: Tsz Wo (Nicholas), SZE
>
> {noformat}
> junit.framework.AssertionFailedError: expected:<14> but was:<15>
> at
> org.apache.hadoop.http.TestGlobalFilter.testServletFilter(TestGlobalFilter.java:150)
> {noformat}
> For more details, see
> http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/666/ .
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