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https://issues.apache.org/jira/browse/HDFS-13435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16436938#comment-16436938
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Yiqun Lin edited comment on HDFS-13435 at 4/13/18 7:21 AM:
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Seems I have made a mistake :P, as [~elgoiri] clarified, {{LOG.error("Cannot
remove {}", path, e);}} should be a right way and the exception message and its
stack info will both be logged.
But [~elgoiri] and [~ajayydv] mentioned a good point that we can enable some
stack trace. I just take a quick glance across the project, maybe we can log
stack trace relevant to State Store/Router operations. People who use RBF maybe
care more of this, so printing the exception stack trace here will be a
appropriate way.
Attach the updated patch:
* Have addressed the #2 comment from [~ywskycn]
* To make log consistent, not add the a dot at the end.
* Fix some wrong log type, from {{LOG.info}} to {{LOG.error}}.
was (Author: linyiqun):
Seems I have made a mistake :P, as [~elgoiri] clarified, {{LOG.error("Cannot
remove {}", path, e);}} should be a right way and the exception message and its
stack info will both be logged.
But [~elgoiri] and [~ajayydv] mentioned a good point that we can enable some
stack trace. I just take a quick glance across the project, maybe we can log
stack trace relevant to State Store/Router operations. People who use RBF maybe
not familiar with these code base. Printing the exception stack trace will be a
appropriate way.
Attach the updated patch:
* Have addressed the #2 comment from [~ywskycn]
* To make log consistent, not add the a dot at the end.
* Fix some wrong log type, from {{LOG.info}} to {{LOG.error}}.
> RBF: Fix wrong error loggings
> -----------------------------
>
> Key: HDFS-13435
> URL: https://issues.apache.org/jira/browse/HDFS-13435
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: 3.0.1
> Reporter: Yiqun Lin
> Assignee: Yiqun Lin
> Priority: Major
> Attachments: HDFS-13435.001.patch, HDFS-13435.002.patch
>
>
> There are many places that using {{Logger.error(String format, Object...
> arguments)}} incorrectly.
> A example:
> {code:java}
> LOG.error("Cannot remove {}", path, e);
> {code}
> The exception passed here is no meaning and won't be printed. Actually it
> should be update to
> {code:java}
> LOG.error("Cannot remove {}: {}.", path, e.getMessage());
> {code}
> or
> {code:java}
> LOG.error("Cannot remove " + path, e));
> {code}
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