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Posted to common-issues@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2016/09/13 18:45:20 UTC
[jira] [Updated] (HADOOP-13605) Clean up FileSystem javadocs,
logging; improve diagnostics on FS load
[ https://issues.apache.org/jira/browse/HADOOP-13605?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Loughran updated HADOOP-13605:
------------------------------------
Attachment: HADOOP-13605-branch-2-001.patch
Patch 001
code changes are all around FS load diagnostics and logging.
otherwise: javadoc fixes, some formatting, moving to Java7 <> syntax in constructors.
Essentially: housekeeping
> Clean up FileSystem javadocs, logging; improve diagnostics on FS load
> ---------------------------------------------------------------------
>
> Key: HADOOP-13605
> URL: https://issues.apache.org/jira/browse/HADOOP-13605
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Affects Versions: 2.8.0
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Attachments: HADOOP-13605-branch-2-001.patch
>
>
> We can't easily debug FS instantiation problems as there isn't much detail in what was going on.
> We can add more logging, but cannot simply switch {{FileSystem.LOG}} to SLF4J —the class is used in too many places, including tests which cast it. Instead, add a new private SLF4J Logger, {{LOGGER}} and switch logging to it.
> While working in the base FileSystem class, take the opportunity to clean up javadocs and comments
> # add the list of exceptions, including indicating which base classes throw UnsupportedOperationExceptions
> # cut bits in the comments which are not true
> The outcome of this patch is that IDEs shouldn't highlight most of the file as flawed in some way or another
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