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https://issues.apache.org/jira/browse/CASSANDRA-16587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17319370#comment-17319370
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Michael Semb Wever edited comment on CASSANDRA-16587 at 4/12/21, 12:07 PM:
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I think changing (or finding available) port numbers is outside the scope of 
this ticket. Regarding file locking, I was thinking of process temporary files. 
Like 
[this|https://github.com/apache/cassandra/compare/trunk...thelastpickle:mck/16587-3/trunk]
 (untested!)


was (Author: michaelsembwever):
I think changing (or finding available) port numbers is outside the scope of 
this ticket. Regarding file locking, I was thinking of process temporary files. 
Like 
untested[this|https://github.com/apache/cassandra/compare/trunk...thelastpickle:mck/16587-3/trunk]
 (untested!)

> flaky AntiCompactionBytemanTest.testRedundantTransitions byteman Connection 
> refused
> -----------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-16587
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16587
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Test/unit
>            Reporter: Michael Semb Wever
>            Assignee: Michael Semb Wever
>            Priority: Normal
>             Fix For: 4.0-rc
>
>
> Failing occasionally with 
> {noformat}
> java.net.ConnectException: Connection refused (Connection refused)
>       at java.net.PlainSocketImpl.socketConnect(Native Method)
>       at 
> java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
>       at 
> java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
>       at 
> java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
>       at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
>       at java.net.Socket.connect(Socket.java:607)
>       at java.net.Socket.connect(Socket.java:556)
>       at java.net.Socket.<init>(Socket.java:452)
>       at java.net.Socket.<init>(Socket.java:229)
>       at org.jboss.byteman.agent.submit.Submit$Comm.<init>(Submit.java:881)
>       at org.jboss.byteman.agent.submit.Submit.submitRequest(Submit.java:787)
>       at org.jboss.byteman.agent.submit.Submit.addScripts(Submit.java:603)
>       at 
> org.jboss.byteman.contrib.bmunit.BMUnit.loadScriptText(BMUnit.java:291)
>       at 
> org.jboss.byteman.contrib.bmunit.BMUnitRunner$9.evaluate(BMUnitRunner.java:362)
>       at 
> org.jboss.byteman.contrib.bmunit.BMUnitRunner$6.evaluate(BMUnitRunner.java:263)
>       at 
> org.jboss.byteman.contrib.bmunit.BMUnitRunner$1.evaluate(BMUnitRunner.java:97)
> {noformat}
> Looking through the [logs 
> |https://nightlies.apache.org/cassandra/trunk/Cassandra-trunk-test-cdc/650/Cassandra-trunk-test-cdc/jdk=jdk_11_latest,label=cassandra,split=6/build/test/logs/cdc/TEST-org.apache.cassandra.db.compaction.AntiCompactionBytemanTest.log.xz]
>  this correlates to
> {noformat}
> Setting org.jboss.byteman.allow.config.update=true
>  TransformListener() : unexpected exception opening server socket 
> java.net.BindException: Address already in use (Bind failed)
>  java.net.BindException: Address already in use (Bind failed)
>       at java.net.PlainSocketImpl.socketBind(Native Method)
>       at 
> java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:387)
>       at java.net.ServerSocket.bind(ServerSocket.java:390)
>       at java.net.ServerSocket.bind(ServerSocket.java:344)
>       at 
> org.jboss.byteman.agent.TransformListener.initialize(TransformListener.java:81)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:498)
>       at org.jboss.byteman.agent.Main.premain(Main.java:286)
>       at org.jboss.byteman.agent.Main.agentmain(Main.java:309)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:498)
>       at 
> sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:386)
>       at 
> sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:411)
> {noformat}



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