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From ramakrishna menon <rmenon...@gmail.com>
Subject Re: Log4j exception Could not close org.apache.log4j.helpers.CountingQuietWriter
Date Fri, 24 Apr 2009 16:08:33 GMT
As far as I know if I use an editor to open a log file then that should not
lock it for the application...
As I mentioned, even though the file is on a shared NFS, no other
application is accessing/writing to the same log4j file. I have the habit of
creating separate directory for each web application.
A tomcat hosting another application running on another server also uses
log4j and writes to the shared NFS but to a different directory structure.

The application is multi-threaded so it is possible that multiple threads
are writing to the same log4j file - but since log4j is multi-threaded that
should not be an issue.

Any further thoughts or workarounds?

Thank you,
Menon
-----------------------------------------------------------
R. M. Menon - A Rafi fan(www.mohdrafi.com)
Author, Expert Oracle JDBC Programming,
http://www.amazon.com/exec/obidos/tg/detail/-/159059407X/
-----------------------------------------------------------


On Fri, Apr 24, 2009 at 8:59 AM, Matt Brown <Matt.Brown@citrixonline.com>wrote:

> I'm not really up on the internals of RollingFileAppender, but I would bet
> that the file residing on a shared NFS directory is in fact the cause of the
> problem. This log message (which is just logged at INFO, and isn't truly an
> exception being thrown outside of log4j) is indicating that log4j could not
> close the file, which I believe it is necessary to do to rename it.
>
> I'd assume the file could not be closed / renamed because someone was
> accessing it on the shared location and possibly even had it locked.
>
> -----Original Message-----
> From: ramakrishna menon [mailto:rmenon.us@gmail.com]
> Sent: Friday, April 24, 2009 11:26 AM
> To: Log4J Users List
> Subject: Re: Log4j exception Could not close
> org.apache.log4j.helpers.CountingQuietWriter
>
> Sure - thank you for a super prompt response! Here is my log4j
> configuration. The directory in which the application writes is a shared NFS
> directory if it makes any difference. But no other vm (tomcat) or
> application is writing to this directory...
> # log4j properties file
> #log4j.debug=true
> log4j.rootLogger=WARN, R
> #
> log4j.appender.R=org.apache.log4j.RollingFileAppender
> log4j.appender.R.File=/data/etl/ssm/extractor/logs/extractor.log
> log4j.appender.R.MaxFileSize=20MB
> log4j.appender.R.MaxBackupIndex=30
> log4j.appender.R.layout=org.apache.log4j.PatternLayout
> log4j.appender.R.layout.ConversionPattern=%d [%t] %-5p %c - %m%n #
> log4j.logger.com.opinmind=DEBUG
> log4j.logger.org.apache.commons.digester=debug
>
>
> -----------------------------------------------------------
> R. M. Menon - A Rafi fan(www.mohdrafi.com) Author, Expert Oracle JDBC
> Programming, http://www.amazon.com/exec/obidos/tg/detail/-/159059407X/
> -----------------------------------------------------------
>
>
> On Fri, Apr 24, 2009 at 8:10 AM, Matt Brown <Matt.Brown@citrixonline.com
> >wrote:
>
> > Can you share your log4j configuration?
> >
> > -----Original Message-----
> > From: ramakrishna menon [mailto:rmenon.us@gmail.com]
> > Sent: Friday, April 24, 2009 11:08 AM
> > To: log4j-user@logging.apache.org
> > Subject: Log4j exception Could not close
> > org.apache.log4j.helpers.CountingQuietWriter
> >
> > Hi I have a web application installed on a single tomcat instance.
> >
> > After around 2 to 5 days of running, the entire application stalls.
> > When checking the log, I get the following error stack. I did some
> > research on this on google but could not find any solution. What can I
> > do to avoid this situation? A tomcat bounce typically resolves the
> situation temporarily.
> >
> > Thank you!
> > Menon
> > Apr 23, 2009 11:40:40 PM org.apache.catalina.core.StandardWrapperValve
> > invoke
> > INFO: log4j:ERROR Could not close
> > org.apache.log4j.helpers.CountingQuietWriter@11361f82
> > java.io.IOException: Input/output error
> >        at java.io.FileOutputStream.close0(Native Method)
> >        at java.io.FileOutputStream.close(FileOutputStream.java:279)
> >        at
> > sun.nio.cs.StreamEncoder$CharsetSE.implClose(StreamEncoder.java:431)
> >        at sun.nio.cs.StreamEncoder.close(StreamEncoder.java:160)
> >        at java.io.OutputStreamWriter.close(OutputStreamWriter.java:222)
> >        at java.io.FilterWriter.close(FilterWriter.java:92)
> >        at org.apache.log4j.FileAppender.closeFile(FileAppender.java:183)
> >        at
> >
> org.apache.log4j.RollingFileAppender.rollOver(RollingFileAppender.java:146)
> >        at
> >
> >
> org.apache.log4j.RollingFileAppender.subAppend(RollingFileAppender.java:239)
> >        at org.apache.log4j.WriterAppender.append(WriterAppender.java:159)
> >        at
> > org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:230)
> >        at
> >
> >
> org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:65)
> >        at org.apache.log4j.Category.callAppenders(Category.java:203)
> >        at org.apache.log4j.Category.forcedLog(Category.java:388)
> >        at org.apache.log4j.Category.debug(Category.java:257)
> >        at
> > com.opinmind.db.DbUtil.executeDbProcAffectingRows(DbUtil.java:244)
> >        at
> >
> >
> com.opinmind.webapp.exporter.AbstractExporter.logExtractorStats(AbstractExporter.java:139)
> >        at
> >
> >
> com.opinmind.webapp.exporter.ExporterAssumingClientOnDbImpl.generateFile(ExporterAssumingClientOnDbImpl.java:138)
> >        at
> >
> >
> com.opinmind.webapp.etl.extractor.DbDataExporter.getFiles(DbDataExporter.java:65)
> >        at
> >
> >
> com.opinmind.webapp.etl.extractor.action.ExtractDbDataIntoFileAction.doExecute(ExtractDbDataIntoFileAction.java:71)
> >        at
> com.opinmind.webapp.action.BaseAction.execute(BaseAction.java:50)
> >        at
> >
> >
> org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
> >        at
> >
> >
> org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
> >        at
> >
> >
> org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
> >        at
> > org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
> >
> > -----------------------------------------------------------
> > R. M. Menon - A Rafi fan(www.mohdrafi.com) Author, Expert Oracle JDBC
> > Programming, http://www.amazon.com/exec/obidos/tg/detail/-/159059407X/
> > -----------------------------------------------------------
> > -----------------------------------------------------------
> > R. M. Menon - A Rafi fan(www.mohdrafi.com) Author, Expert Oracle JDBC
> > Programming, http://www.amazon.com/exec/obidos/tg/detail/-/159059407X/
> > -----------------------------------------------------------
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
> > For additional commands, e-mail: log4j-user-help@logging.apache.org
> >
> >
>
> ---------------------------------------------------------------------
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>
>

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