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https://issues.apache.org/jira/browse/HDFS-161?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Konstantin Shvachko updated HDFS-161:
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Component/s: documentation
data-node
> DataNode will create missing dfs.data.dir directories contrary to docs
> ----------------------------------------------------------------------
>
> Key: HDFS-161
> URL: https://issues.apache.org/jira/browse/HDFS-161
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: data-node, documentation
> Reporter: Todd Lipcon
> Priority: Minor
>
> The documentation (and HADOOP-340) seems to indicate that if a data dir
> listed in dfs.data.dir does not exist, it will be ignored. In fact, if the
> hadoop user has access to (essentially) mkdir -p the data dir it will do so.
> I'd like to add another configuration parameter, perhaps dfs.data.dir.create
> with default true (to not break any existing tutorials). If this is set to
> false then data dirs that do not exist will not implicitly be created.
> The motivation for this is the same as HADOOP-340 - we have different disk
> configs in our cluster and hadoop is creating data dirs where we do not want
> them.
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