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From "Weiwei Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12583) Ozone: Fix swallow exceptions which makes hard to debug failures
Date Wed, 11 Oct 2017 03:21:03 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16199745#comment-16199745
] 

Weiwei Yang commented on HDFS-12583:
------------------------------------

Looks good to me, +1 to v4 patch, thanks [~linyiqun].

> Ozone: Fix swallow exceptions which makes hard to debug failures
> ----------------------------------------------------------------
>
>                 Key: HDFS-12583
>                 URL: https://issues.apache.org/jira/browse/HDFS-12583
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>    Affects Versions: HDFS-7240
>            Reporter: Yiqun Lin
>            Assignee: Yiqun Lin
>         Attachments: HDFS-12583-HDFS-7240.001.patch, HDFS-12583-HDFS-7240.002.patch,
HDFS-12583-HDFS-7240.003.patch, HDFS-12583-HDFS-7240.004.patch
>
>
> There are some places that swallow exceptions that makes client hard to debug the failure.
For example, if we get xceiver client from xceiver client manager error, client only gets
the error info like this:
> {noformat}
> org.apache.hadoop.ozone.web.exceptions.OzoneException: Exception getting XceiverClient.
> 	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> 	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> 	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> 	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> 	at com.fasterxml.jackson.databind.introspect.AnnotatedConstructor.call(AnnotatedConstructor.java:119)
> 	at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator.createUsingDefault(StdValueInstantiator.java:243)
> {noformat}
> The error exception stack is missing. We should print the error log as well.



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