Hadoop HDFS copy with wildcards?
First of all, HDFS copy with wildcards is supported. Secondly, use of hadoop dfs is deprecated, you'd better use hadoop fs or hdfs dfs instead. If you're sure the operation was not successful (although it seems succeed), you could check out the log files of namenode to see what's wrong.
Interesting. This is what I get in my local VM running Hadoop 0.18.0. What version are you using? I can try on 1.2.1 also
hadoop-user@hadoop-desk:~$ hadoop fs -ls /user/hadoop-user/testcopyhadoop-user@hadoop-desk:~$ hadoop dfs -cp /user/hadoop-user/input/*.txt /user/hadoop-user/testcopy/hadoop-user@hadoop-desk:~$ hadoop fs -ls /user/hadoop-user/testcopyFound 2 items-rw-r--r-- 1 hadoop-user supergroup 79 2014-01-06 04:35 /user/hadoop-user/testcopy/HelloWorld.txt-rw-r--r-- 1 hadoop-user supergroup 140 2014-01-06 04:35 /user/hadoop-user/testcopy/SampleData.txt