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Posted to common-issues@hadoop.apache.org by "Sangjin Lee (JIRA)" <ji...@apache.org> on 2016/08/09 01:02:20 UTC
[jira] [Updated] (HADOOP-12747) support wildcard in libjars
argument
[ https://issues.apache.org/jira/browse/HADOOP-12747?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sangjin Lee updated HADOOP-12747:
---------------------------------
Resolution: Fixed
Hadoop Flags: Reviewed
Fix Version/s: 3.0.0-alpha2
2.9.0
Release Note: It is now possible to specify multiple jar files for the libjars argument using a wildcard. For example, you can specify "-libjars 'libs/*'" as a shorthand for all jars in the libs directory.
Status: Resolved (was: Patch Available)
Committed. Thanks [~cnauroth], [~jira.shegalov], and [~vicaya] for your reviews and comments.
> support wildcard in libjars argument
> ------------------------------------
>
> Key: HADOOP-12747
> URL: https://issues.apache.org/jira/browse/HADOOP-12747
> Project: Hadoop Common
> Issue Type: New Feature
> Components: util
> Reporter: Sangjin Lee
> Assignee: Sangjin Lee
> Fix For: 2.9.0, 3.0.0-alpha2
>
> Attachments: HADOOP-12747.01.patch, HADOOP-12747.02.patch, HADOOP-12747.03.patch, HADOOP-12747.04.patch, HADOOP-12747.05.patch, HADOOP-12747.06.patch, HADOOP-12747.07.patch
>
>
> There is a problem when a user job adds too many dependency jars in their command line. The HADOOP_CLASSPATH part can be addressed, including using wildcards (\*). But the same cannot be done with the -libjars argument. Today it takes only fully specified file paths.
> We may want to consider supporting wildcards as a way to help users in this situation. The idea is to handle it the same way the JVM does it: \* expands to the list of jars in that directory. It does not traverse into any child directory.
> Also, it probably would be a good idea to do it only for libjars (i.e. don't do it for -files and -archives).
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