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https://issues.apache.org/jira/browse/HADOOP-9193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Isaacson updated HADOOP-9193:
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Description:
The hadoop front-end script will print a deprecation warning and defer to the
hdfs front-end script for certain commands, like fsck, dfs. If a wildcard
appears as an argument then it can be inadvertently expanded by the shell to
match a local filesystem path before being sent to the hdfs script, which can
be very confusing to the end user.
For example, the following two commands usually perform very different things,
even though they should be equivalent:
{code}
hadoop fs -ls /tmp/\*
hadoop dfs -ls /tmp/\*
{code}
The former lists everything in the default filesystem under /tmp, while the
latter expands /tmp/\* into everything in the *local* filesystem under /tmp and
passes those as arguments to try to list in the default filesystem.
was:
The hadoop front-end script will print a deprecation warning and defer to the
hdfs front-end script for certain commands, like fsck, dfs. If a wildcard
appears as an argument then it can be inadvertently expanded by the shell to
match a local filesystem path before being sent to the hdfs script, which can
be very confusing to the end user.
For example, the following two commands usually perform very different things,
even though they should be equivalent:
hadoop fs -ls /tmp/\*
hadoop dfs -ls /tmp/\*
The former lists everything in the default filesystem under /tmp, while the
latter expands /tmp/\* into everything in the *local* filesystem under /tmp and
passes those as arguments to try to list in the default filesystem.
> hadoop script can inadvertently expand wildcard arguments when delegating to
> hdfs script
> ----------------------------------------------------------------------------------------
>
> Key: HADOOP-9193
> URL: https://issues.apache.org/jira/browse/HADOOP-9193
> Project: Hadoop Common
> Issue Type: Bug
> Components: scripts
> Affects Versions: 2.0.2-alpha, 0.23.5
> Reporter: Jason Lowe
> Priority: Minor
>
> The hadoop front-end script will print a deprecation warning and defer to the
> hdfs front-end script for certain commands, like fsck, dfs. If a wildcard
> appears as an argument then it can be inadvertently expanded by the shell to
> match a local filesystem path before being sent to the hdfs script, which can
> be very confusing to the end user.
> For example, the following two commands usually perform very different
> things, even though they should be equivalent:
> {code}
> hadoop fs -ls /tmp/\*
> hadoop dfs -ls /tmp/\*
> {code}
> The former lists everything in the default filesystem under /tmp, while the
> latter expands /tmp/\* into everything in the *local* filesystem under /tmp
> and passes those as arguments to try to list in the default filesystem.
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