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https://issues.apache.org/jira/browse/HDFS-4227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13542680#comment-13542680
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Aaron T. Myers commented on HDFS-4227:
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Hi Daisuke/Mark, the latest patch looks pretty good. A few little comments:
# The description for dfs.namenode.resource.du.reserved should mention what
unit the config is in. In particular, it's in bytes.
# Given that the unit of dfs.namenode.resource.du.reserved is bytes, the
default value for it should be 104857600.
# I don't understand the description "If no redundant resources are available
we don't enter SM if there are sufficient required resources." Could you
perhaps rewrite this to be a little more clear?
> Document dfs.namenode.resource.*
> ----------------------------------
>
> Key: HDFS-4227
> URL: https://issues.apache.org/jira/browse/HDFS-4227
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: documentation
> Affects Versions: 1.0.0, 2.0.0-alpha
> Reporter: Eli Collins
> Assignee: Daisuke Kobayashi
> Labels: newbie
> Attachments: hdfs-4227-1.patch, HDFS-4227.patch
>
>
> Let's document {{dfs.namenode.resource.*}} in hdfs-default.xml and a section
> the in the HDFS docs that covers local directories.
> {{dfs.namenode.resource.check.interval}} - the interval in ms at which the
> NameNode resource checker runs (default is 5000)
> {{dfs.namenode.resource.du.reserved}} - the amount of space to
> reserve/require for a NN storage directory (default is 100mb)
> {{dfs.namenode.resource.checked.volumes}} - a list of local directories for
> the NN resource checker to check in addition to the local edits directories
> (default is empty).
> {{dfs.namenode.resource.checked.volumes.minimum}} - the minimum number of
> redundant NN storage volumes required (default is 1). If no redundant
> resources are available we don't enter SM if there are sufficient required
> resources.
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