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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 25060] New: - Reloading context orphans currently open jndi datasource connections
Date Thu, 27 Nov 2003 21:15:11 GMT
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=25060

Reloading context orphans currently open jndi datasource connections

           Summary: Reloading context orphans currently open jndi datasource
                    connections
           Product: Tomcat 4
           Version: 4.1.27
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Unknown
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: raz@chewies.net


I fiddled around with this a while and have determined to the best of my ability
that this is a real bug.  I have a jndi datasource connected to a postgresql
server.  I have two jndi resources (a reader and writer) so that later I can
implement a system with replication etc and deal with writes and reads to
different connections.  To summarize, after using the system, there are two
connections to postgres that get reused -- one reader and writer.  Under load,
this number increases and will slowly go back down.  I usually end up with two
idle connections (one reader and one writer) left under no load.  If you reload
the context where the datasource is at (it's a context specific datasource), the
number of connections will jump by two when used.  Each reload produces 2 more
connections min until I restart the server.  It appears that after a reload, the
'persisted connections' get abandoned / orphaned.  Eventually, I hit my max
connections and cannot aquire any more and the system fails.  I have tried the
abandond collection parameters and have added debug logging to my code to ensure
that I am indeed calling close on the connections I checkout, even on exceptions
and error cases.  Under normal useage without reloads, no connection leakage
happens.

This is on a solaris 8 machine with the 4.1.27-hotfix-22096.tar.gz applied.  Let
me know if more information is required.  I have this in a development
environment and can let somone attach in jdb and hammer on the thing since it's
not a production system -- if that will help in getting a repro.

Wayne

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