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From "Sanjay Radia (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3486) No config parameter for initial block report detail sin Hadoop-defaults.xml
Date Tue, 03 Jun 2008 21:56:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3486?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12602088#action_12602088
] 

Sanjay Radia commented on HADOOP-3486:
--------------------------------------

Good case to make it shorter; do you literally mean 0 sec or something short like 5sec?
I had set the default for common mid sized cluster (100-400 nodes).
Looks like we should really do  HADOOP-2444 which automates the backoff parameter.
I guess the argument is that the person running the one node cluster needs to right default
value and that only one running a larger cluster is smart enough to configure  the
appropriate delay parameter.

> No config parameter for initial block report detail sin Hadoop-defaults.xml
> ---------------------------------------------------------------------------
>
>                 Key: HADOOP-3486
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3486
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Sanjay Radia
>            Assignee: Sanjay Radia
>             Fix For: 0.18.0
>
>         Attachments: hadoopDefaults4Delay.patch
>
>
> HADOOP-2326 added a new config parameter for the initial block report that gets sent
after DataNode registration but this config parameter was not documented in the Hadoop-defaults.xml
> This Jira fixes that.
>  - conf/hadoop-defaults.xml uses a default value of 60 sec (as does the code)
>   - src/test/haddoop-sites uses a default value of 0 sec. 

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