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https://issues.apache.org/jira/browse/HDFS-6493?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HDFS-6493 started by Juan Yu.

> Propose to change "dfs.namenode.startup.delay.block.deletion" to second 
> instead of millisecond
> ----------------------------------------------------------------------------------------------
>
>                 Key: HDFS-6493
>                 URL: https://issues.apache.org/jira/browse/HDFS-6493
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Juan Yu
>            Assignee: Juan Yu
>            Priority: Trivial
>         Attachments: HDFS-6493.001.patch
>
>
> Based on the discussion in https://issues.apache.org/jira/browse/HDFS-6186, 
> the delay will be at least 30 minutes or even hours. it's not very user 
> friendly to use milliseconds when it's likely measured in hours.
> I suggest to make the following change
> 1. change the unit of this config to second
> 2. rename the config key from "dfs.namenode.startup.delay.block.deletion.ms" 
> to "dfs.namenode.startup.delay.block.deletion.sec"
> 3. add the default value to hdfs-default.xml, what's the reasonable value, 30 
> minutes, one hour?



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