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From Ananth Tatachar <ananth.tatac...@gmail.com>
Subject Re: Inconsistent results observed while using BufferingForwardAppender
Date Fri, 15 Aug 2014 13:19:48 GMT
Thanks a lot Sir, I will implement this idea and I will let you know if it
works for me.


On Thu, Aug 14, 2014 at 1:45 PM, Michael Schall <mike.schall@gmail.com>
wrote:

> Try adding the thread name to your conversion to ensure it is a different
> thread
>
> <conversionPattern value="%level %date{yyyy-MM-dd'T'HH:mm:ss.fffzzz
> <http://opengrok.factset.com/source/s?path=ss.fffzzz&project=/platform/wauds/mainline>}
> %property{hostname}  [%thread]  %property{guid} %message%newline" />
>
> It seems more likely that a thread is being reused.
>
> Mike
>
>
> On Thu, Aug 14, 2014 at 10:51 AM, Ananth Tatachar <
> ananth.tatachar@gmail.com> wrote:
>
>> I am working with log4net version : 1.2.12.0 .
>>
>>
>>
>> I am getting inconsistent results , while using RollingFileAppender with
>> BufferingForwardAppender.
>>
>> My application is a multithreaded application. I spawned 5 threads Each
>> will call the constructor of MyClass and SomeFunction once.
>>
>> My application's sertup is as follows:
>>
>>
>>
>> Web.config:
>>
>> -------------------------------
>>
>>  <appender name="RollingLocalFileAppender" type="
>> log4net.Appender.RollingFileAppender
>> <http://opengrok.factset.com/source/s?path=log4net.Appender.RollingFileAppender&project=/platform/wauds/mainline>
>> ">
>>       <file type="log4net.Util.PatternString
>> <http://opengrok.factset.com/source/s?path=log4net.Util.PatternString&project=/platform/wauds/mainline>
>> " value="C:\Logs\TFile.log" />
>>       <rollingStyle value="Date" />
>>      <datePattern value="yyyy-MM-dd" />
>>      <maxSizeRollBackups value="10" />
>>       <appendToFile value="true" />
>>      <layout type="log4net.Layout.PatternLayout
>> <http://opengrok.factset.com/source/s?path=log4net.Layout.PatternLayout&project=/platform/wauds/mainline>
>> ">
>>         <conversionPattern value="%level %date{yyyy-MM-dd'T'HH:mm:
>> ss.fffzzz
>> <http://opengrok.factset.com/source/s?path=ss.fffzzz&project=/platform/wauds/mainline>}
>> %property{hostname}  %property{guid} %message%newline" />
>>      </layout>
>>     </appender>
>>     <appender name="BufferedFileAppender" type="
>> log4net.Appender.BufferingForwardingAppender
>> <http://opengrok.factset.com/source/s?path=log4net.Appender.BufferingForwardingAppender&project=/platform/wauds/mainline>
>> ">
>>       <bufferSize value="512" />
>>      <evaluator type="log4net.Core.TimeEvaluator
>> <http://opengrok.factset.com/source/s?path=log4net.Core.TimeEvaluator&project=/platform/wauds/mainline>
>> ">
>>
>>         <interval value="10" />
>>         <!--Send buffered events immediately if 10 seconds pass-->
>>       </evaluator>
>>       <Fix value="0" />
>>      <!--Buffering can have severe performance degradation if this is
>> set to the default (ALL)-->
>>     </appender>
>>
>>
>>
>>
>>
>> Logging Class:
>>
>> --------------------------
>>
>>
>>
>> Class MyClass
>>
>> {
>>
>> public MyClass()
>>
>> {
>>
>> Log4net.ThreadContext.Properties["guid"] = Guid.NewGuid();
>>
>> }
>>
>>
>>
>> public void SomeFunction()
>>
>> {
>>
>> Ilog log = LogManager.GetLogger(typeof(MyClass));
>>
>> Log.Info("my message");
>>
>> }
>>
>>
>>
>> }
>>
>>
>>
>>
>>
>> Tfile.log(Result)
>>
>> ----------------------
>>
>> Observed Results:
>>
>>
>>
>> INFO 2014-08-14T10:47:36.659-04:00 ANANTHTATACHAR MyAudsDigest
>> [LQR-Y8c71EmtWl7ZqItYoQ] my message
>>
>> INFO 2014-08-14T10:47:36.659-04:00  ANANTHTATACHAR MyAudsDigest
>> [9hDzS-_Su0SrEoXZF_aGMw] my message
>>
>> INFO 2014-08-14T10:47:36.729-04:00 ANANTHTATACHAR MyAudsDigest
>> [GsxT7aTfNEq1uIsqPYeZ5w]  my message
>>
>> INFO 2014-08-14T10:47:36.789-04:00 ANANTHTATACHAR MyAudsDigest
>> [9hDzS-_Su0SrEoXZF_aGMw] my message
>>
>> INFO 2014-08-14T10:47:36.955-04:00 ANANTHTATACHAR MyAudsDigest
>> [9hDzS-_Su0SrEoXZF_aGMw] my message
>>
>>
>>
>>
>>
>>
>>
>> Expected Results:
>>
>> Unique guid in all the messages.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> --------------------------------------------------------------------------------------------------------------------------------------
>>
>>
>>
>> I understand that Fix value  NONE in
>> log4net.Appender.BufferingForwardingAppender
>> <http://opengrok.factset.com/source/s?path=log4net.Appender.BufferingForwardingAppender&project=/platform/wauds/mainline>
>> will not fix any volatile variables , but making it all results in all my
>> guids in all the 5 messages becoming same.
>>
>>
>>
>> Could anybody please tell me how to fix this issue?
>>
>
>

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