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https://issues.apache.org/jira/browse/MAPREDUCE-5851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13996217#comment-13996217
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Avinash Kujur commented on MAPREDUCE-5851:
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i can see many parameters in Distcp class. in which parameter do we need to
enable regular expressions?
private static final String usage = NAME
+ " [OPTIONS] <srcurl>* <desturl>" +
"\n\nOPTIONS:" +
"\n-p[rbugp] Preserve status" +
"\n r: replication number" +
"\n b: block size" +
"\n u: user" +
"\n g: group" +
"\n p: permission" +
"\n -p alone is equivalent to -prbugp" +
"\n-i Ignore failures" +
"\n-log <logdir> Write logs to <logdir>" +
"\n-m <num_maps> Maximum number of simultaneous copies" +
"\n-overwrite Overwrite destination" +
"\n-update Overwrite if src size different from dst size" +
"\n-f <urilist_uri> Use list at <urilist_uri> as src list" +
"\n-filelimit <n> Limit the total number of files to be <= n" +
"\n-sizelimit <n> Limit the total size to be <= n bytes" +
"\n-delete Delete the files existing in the dst but not in
src" +
"\n-mapredSslConf <f> Filename of SSL configuration for mapper task" +
"\n\nNOTE 1: if -overwrite or -update are set, each source URI is " +
"\n interpreted as an isomorphic update to an existing directory." +
"\nFor example:" +
"\nhadoop " + NAME + " -p -update \"hdfs://A:8020/user/foo/bar\" " +
"\"hdfs://B:8020/user/foo/baz\"\n" +
"\n would update all descendants of 'baz' also in 'bar'; it would " +
"\n *not* update /user/foo/baz/bar" +
"\n\nNOTE 2: The parameter <n> in -filelimit and -sizelimit can be " +
"\n specified with symbolic representation. For examples," +
"\n 1230k = 1230 * 1024 = 1259520" +
"\n 891g = 891 * 1024^3 = 956703965184" +
"\n";
> Enable regular expression in the DistCp input
> ---------------------------------------------
>
> Key: MAPREDUCE-5851
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5851
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Components: distcp
> Reporter: Yan Qi
> Assignee: Yan Qi
> Priority: Minor
> Labels: distcp, expression, regular
>
> DistCp doesn't support regular expression as the input. If the files to copy
> are in the different locations, it is quite verbose to put a long list of
> inputs in the command.
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