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Review request for Ambari, Alejandro Fernandez, Andrew Onischuk, Di Li, Jonathan Hurley, Jayush Luniya, and Sumit Mohanty. Bugs: AMBARI-19241 https://issues.apache.org/jira/browse/AMBARI-19241 Repository: ambari Description ------- Currently the hdfs_resources.py supports 1) create files/directories in HDFS 2) delete files/directories in HDFS 3) upload files/directories to HDFS We should also support download of files/directories from HDFS. This will help particularly in cloud environments where the users of the cluster don't necessarily have write access to the local file system. Diffs ----- ambari-common/src/main/python/resource_management/libraries/functions/download_from_hdfs.py PRE-CREATION ambari-common/src/main/python/resource_management/libraries/providers/hdfs_resource.py f1aa3e1 ambari-common/src/main/python/resource_management/libraries/resources/hdfs_resource.py 5761fd6 contrib/fast-hdfs-resource/src/main/java/org/apache/ambari/fast_hdfs_resource/Resource.java da5a706 contrib/fast-hdfs-resource/src/main/java/org/apache/ambari/fast_hdfs_resource/Runner.java e4656c7 Diff: https://reviews.apache.org/r/54874/diff/ Testing ------- Manual testing with and without web hdfs. Tested download files and directories both when they existed locally and when they didn't. Thanks, Tim Thorpe