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https://issues.apache.org/jira/browse/ZOOKEEPER-1862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13937239#comment-13937239
]
Michi Mutsuzaki commented on ZOOKEEPER-1862:
--------------------------------------------
This is awesome! Thanks Rakesh!
> ServerCnxnTest.testServerCnxnExpiry is intermittently failing
> -------------------------------------------------------------
>
> Key: ZOOKEEPER-1862
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1862
> Project: ZooKeeper
> Issue Type: Bug
> Components: tests
> Affects Versions: 3.5.0
> Reporter: Rakesh R
> Assignee: Rakesh R
> Fix For: 3.5.0
>
> Attachments: ZOOKEEPER-1862.patch, ZOOKEEPER-1862.patch
>
>
> ServerCnxnTest#testServerCnxnExpiry test case is failing in the trunk build
> with the following exception
> {code}
> [junit] 2014-01-11 10:13:07,696 [myid:] - INFO
> [NIOServerCxnFactory.AcceptThread:0.0.0.0/0.0.0.0:11221:NIOServerCnxnFactory$AcceptThread@296]
> - Accepted socket connection from /127.0.0.1:63930
> [junit] 2014-01-11 10:13:09,000 [myid:] - INFO
> [ConnnectionExpirer:NIOServerCnxn@1006] - Closed socket connection for client
> /127.0.0.1:63930 (no session established for client)
> [junit] 2014-01-11 10:13:10,697 [myid:] - INFO
> [main:JUnit4ZKTestRunner$LoggedInvokeMethod@62] - TEST METHOD FAILED
> testServerCnxnExpiry
> [junit] java.net.SocketException: Software caused connection abort: recv
> failed
> [junit] at java.net.SocketInputStream.socketRead0(Native Method)
> [junit] at java.net.SocketInputStream.read(SocketInputStream.java:150)
> [junit] at java.net.SocketInputStream.read(SocketInputStream.java:121)
> [junit] at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:283)
> [junit] at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:325)
> [junit] at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:177)
> [junit] at java.io.InputStreamReader.read(InputStreamReader.java:184)
> [junit] at java.io.BufferedReader.fill(BufferedReader.java:154)
> [junit] at java.io.BufferedReader.readLine(BufferedReader.java:317)
> [junit] at java.io.BufferedReader.readLine(BufferedReader.java:382)
> [junit] at
> org.apache.zookeeper.test.ServerCnxnTest.send4LetterWord(ServerCnxnTest.java:105)
> [junit] at
> org.apache.zookeeper.test.ServerCnxnTest.sendRequest(ServerCnxnTest.java:77)
> [junit] at
> org.apache.zookeeper.test.ServerCnxnTest.testServerCnxnExpiry(ServerCnxnTest.java:64)
> [junit] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> [junit] at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> [junit] at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> [junit] at java.lang.reflect.Method.invoke(Method.java:601)
> [junit] at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
> [junit] at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
> [junit] at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
> [junit] at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
> [junit] at
> org.apache.zookeeper.JUnit4ZKTestRunner$LoggedInvokeMethod.evaluate(JUnit4ZKTestRunner.java:52)
> [junit] at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
> [junit] at
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
> [junit] at org.junit.rules.TestWatchman$1.evaluate(TestWatchman.java:52)
> [junit] at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
> [junit] at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:69)
> [junit] at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:48)
> [junit] at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
> [junit] at
> org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
> [junit] at
> org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
> [junit] at
> org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
> [junit] at
> org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
> [junit] at org.junit.runners.ParentRunner.run(ParentRunner.java:292)
> [junit] at
> junit.framework.JUnit4TestAdapter.run(JUnit4TestAdapter.java:39)
> [junit] at
> org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:518)
> [junit] at
> org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:1052)
> [junit] at
> org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:906)
> {code}
> When analyzing the possible cause of the failure is:
> During connection expiry server will close the socket channel connection.
> After the socket closure, when the client tries to read a line of text will
> throw java.net.SocketException.
> In the failure scenario the testcase has established a socket connection and
> entering into the sleep. In the meantime the server side expiration would
> happen and closing the socket channel. Assume after the socket closure the
> testcase is trying to read the text using the previously established socket
> and is resulting in SocketException. There is a race between the reading the
> socket in the client side and socket closure in server side.
> {code}
> NIOServerCnxn#closeSock is closing the socket channel.
> sock.socket().shutdownOutput();
> sock.socket().shutdownInput();
> sock.socket().close();
> sock.close();
> {code}
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