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From "Mingliang Liu (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HDFS-12065) Fix log format in StripedBlockReconstructor
Date Thu, 29 Jun 2017 01:04:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16067538#comment-16067538
] 

Mingliang Liu edited comment on HDFS-12065 at 6/29/17 1:03 AM:
---------------------------------------------------------------

https://www.slf4j.org/faq.html#paramException

Per the signature, it should go the {{public void warn(String format, Object arg1, Object
arg2);}} call, which will internally check the last argument is {{Throwable}} or not.

I'm not sure why it's not working as expected. Is it log4j or java logging configuration related?
Or are you using old version of SLF4J?


was (Author: liuml07):
https://www.slf4j.org/faq.html#paramException

Per the signature, it should go the {{public void warn(String format, Object arg1, Object
arg2);}} call, which will internally check the last argument is {{Throwable}} or not.

I'm not sure it's not working as expected. Is it log4j or java logging configuration related?
Or are your using old version of SLF4J?

> Fix log format in StripedBlockReconstructor
> -------------------------------------------
>
>                 Key: HDFS-12065
>                 URL: https://issues.apache.org/jira/browse/HDFS-12065
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: erasure-coding
>    Affects Versions: 3.0.0-alpha3
>            Reporter: Lei (Eddy) Xu
>            Assignee: Lei (Eddy) Xu
>            Priority: Trivial
>         Attachments: HDFS-12065.00.patch
>
>
> The {{LOG}} is using wrong signature in {{StripedBlockReconstructor}}, and results to
the following message without the stack:
> {code}
> Failed to reconstruct striped block: BP-1026491657-172.31.114.203-1498498077419:blk_-9223372036854759232_5065
> java.lang.NullPointerException
> {code}



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