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Date: Thu, 3 Nov 2016 05:56:58 +0000 (UTC)
From: "Mingliang Liu (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.13017045.1478044052000.169025.1478152618839@Atlassian.JIRA>
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References: <JIRA.13017045.1478044052000@Atlassian.JIRA> <JIRA.13017045.1478044052785@arcas>
Subject: [jira] [Commented] (HDFS-11088) Quash unnecessary safemode WARN
 message during NameNode startup
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archived-at: Thu, 03 Nov 2016 05:57:01 -0000


    [ https://issues.apache.org/jira/browse/HDFS-11088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15631719#comment-15631719 ] 

Mingliang Liu commented on HDFS-11088:
--------------------------------------

I think the proposal and the solution make sense. Thanks for pinging me [~andrew.wang].

{quote}
I think we can file another JIRA to make a change if we think it's necessary to do here. This JIRA will be better to focus on the change as the this JIRA's title mentioned.
{quote}
I think we should add the check in this patch as it is needed largely because we're changing the "force" parameter in {{activate()}}. If "force" is true as it was, we can ignore the return value blindly in that it is supposed to return true after leaving safe mode ignoring the orphan blocks (if any); here it becomes false, we'd better add Precondition check on the return value for safety.

> Quash unnecessary safemode WARN message during NameNode startup
> ---------------------------------------------------------------
>
>                 Key: HDFS-11088
>                 URL: https://issues.apache.org/jira/browse/HDFS-11088
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Andrew Wang
>            Assignee: Yiqun Lin
>            Priority: Trivial
>              Labels: newbie
>         Attachments: HDFS-11088.001.patch, HDFS-11088.002.patch
>
>
> I tried starting a NameNode on a freshly formatted cluster, and it produced this WARN log:
> {noformat}
> 16/11/01 16:42:44 WARN blockmanagement.BlockManagerSafeMode: forceExit used when normal exist would suffice. Treating force exit as normal safe mode exit.
> {noformat}
> I didn't do any special commands related to safemode, so this log should be quashed.
> I didn't try the branch-2's, but it's likely this issue exists there as well.


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