mapreduce-5851
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";
