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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-3701) java.lang.Exception: DRDA_UnableToAccept.S:Unable to accept connections and client hang if tracing is turned on but traceDirectory does not exist
Date Sun, 08 Jun 2008 17:35:45 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12603413#action_12603413
] 

Knut Anders Hatlen commented on DERBY-3701:
-------------------------------------------

Is the exists check necessary in the code below? In Sun's class library at least, File.mkdirs()
first calls File.exists() and does nothing if the directory exists. Since mkdirs() doesn't
throw IOException, I believe it should be safe in other JVMs as well.

+                if (!PrivilegedFileOps.exists(traceDirectory))
+                {
+                    PrivilegedFileOps.mkdirs(traceDirectory);
+                }

mkdirs()'s javadoc has an invalid HTML tag (<code> true </true>). Fixed in revision
664524.

The indentation in Session.java seems to be off. Probably a wrong tab size setting in your
IDE. Fixed in revision 664530.

> java.lang.Exception: DRDA_UnableToAccept.S:Unable to accept connections and client hang
if tracing is turned on but traceDirectory does not exist
> -------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3701
>                 URL: https://issues.apache.org/jira/browse/DERBY-3701
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Server
>    Affects Versions: 10.3.2.1, 10.3.3.0, 10.4.1.3, 10.5.0.0
>            Reporter: Kathey Marsden
>            Assignee: Kathey Marsden
>         Attachments: derby-3701_diff.txt, derby-3701_try1_diff.txt, DerbyIssue.java,
releaseNote.html
>
>
> Attempting to connect to network server if  derby.drda.traceAll is set to true and  derby.drda.traceDirectory
is set to a non-existent directory causes the following exception on the console when the
client attempts to connect and causes the client to hang.
> java.lang.Exception: DRDA_UnableToAccept.S:Unable to accept connections.
>         at org.apache.derby.impl.drda.NetworkServerControlImpl.consolePropertyMessageWork(NetworkServerControlImpl.java:
> 3172)
>         at org.apache.derby.impl.drda.NetworkServerControlImpl.consolePropertyMessage(NetworkServerControlImpl.java:1829
> )
>         at org.apache.derby.impl.drda.ClientThread.run(ClientThread.java:116)
> See attached program DerbyIssue.java for reproducible test case.
> This is a regression. It did not occur with 10.3.1.4.

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