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Date: Mon, 1 Feb 2016 03:07:39 +0000 (UTC)
From: "Lin Yiqun (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.12935503.1454295929000.260894.1454296059810@Atlassian.JIRA>
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 <JIRA.12935503.1454295929457@arcas>
Subject: [jira] [Updated] (HDFS-9727) Improve the exception's log output in
 DataXceiver
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     [ https://issues.apache.org/jira/browse/HDFS-9727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lin Yiqun updated HDFS-9727:
----------------------------
    Status: Patch Available  (was: Open)

Attach a initial patch, kindly review.

> Improve the exception's log output in DataXceiver
> -------------------------------------------------
>
>                 Key: HDFS-9727
>                 URL: https://issues.apache.org/jira/browse/HDFS-9727
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 2.7.1
>            Reporter: Lin Yiqun
>            Assignee: Lin Yiqun
>            Priority: Minor
>         Attachments: HDFS-9727.001.patch
>
>
> There are some not appropriate logLevel output in many palaces of {{DataXceiver}}. When some exceptions happened, the output logLevel often  the info level not warn. Like these:
> {code}
> try {
>         blockSender = new BlockSender(block, blockOffset, length,
>             true, false, sendChecksum, datanode, clientTraceFmt,
>             cachingStrategy);
>       } catch(IOException e) {
>         String msg = "opReadBlock " + block + " received exception " + e; 
>         LOG.info(msg);
>         sendResponse(ERROR, msg);
>         throw e;
>       }
> {code}
> And this case is not only one, it looks frequent in DataXceiver methods.


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