Jason Lowe created HADOOP-9193:
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Summary: 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: 0.23.5, 2.0.2-alpha
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:
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.
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