Return codes are not passed to the calling shell

[mmontuori]

Return codes for command like hdfs dfs -test -d / are not passed. The command always returns zero as a success. The same behavior appears in daemon mode.

This functionality is critical to implement this product for real workloads.

[Vity01]

This utility was designed mainly to be used by human. For scripting you should use script command, which will raise error if any of the commands fail.