[
https://issues.apache.org/jira/browse/HADOOP-16174?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16786879#comment-16786879
]
Andras Bokor commented on HADOOP-16174:
---------------------------------------
[Another description of the
problem...|http://findbugs.sourceforge.net/bugDescriptions.html#LG_LOST_LOGGER_DUE_TO_WEAK_REFERENCE]
> Disable wildfly logs to the console
> -----------------------------------
>
> Key: HADOOP-16174
> URL: https://issues.apache.org/jira/browse/HADOOP-16174
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs/azure
> Reporter: Denes Gerencser
> Priority: Major
> Attachments: HADOOP-16174-001.patch
>
>
> We experience that the wildfly log
> {code:java}
> Mar 06, 2019 4:33:53 PM org.wildfly.openssl.SSL init
> INFO: WFOPENSSL0002 OpenSSL Version OpenSSL 1.0.2g 1 Mar 2016
> {code}
> (sometimes) appears on the console but it should never. Note: this is a
> consequence of HADOOP-15851.
> Our analysis shows the reason is that
> {code:java}
> java.util.logging.Logger.getLogger()
> {code}
> is not guaranteed to always return the _same_ logger instance so
> SSLSocketFactoryEx may set log level on different logger object than the one
> used by wildfly-openssl
> ([https://github.com/wildfly/wildfly-openssl/blob/ace72ba07d0c746b6eb46635f4a8b122846c47c8/java/src/main/java/org/wildfly/openssl/SSL.java#L196)].
> From javadoc of java.util.logging.Logger.getLogger:
> 'Note: The LogManager may only retain a weak reference to the newly created
> Logger. It is important to understand that a previously created Logger with
> the given name may be garbage collected at any time if there is no strong
> reference to the Logger. In particular, this means that two back-to-back
> calls like{{getLogger("MyLogger").log(...)}} may use different Logger objects
> named "MyLogger" if there is no strong reference to the Logger named
> "MyLogger" elsewhere in the program.'
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
