[jira] [Created] (AMBARI-24675) Hdfs Resource File Check using checksums

[Prabhu Joseph (JIRA)]

Prabhu Joseph created AMBARI-24675:
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             Summary: Hdfs Resource File Check using checksums
                 Key: AMBARI-24675
                 URL: https://issues.apache.org/jira/browse/AMBARI-24675
             Project: Ambari
          Issue Type: Bug
    Affects Versions: 2.7.0
            Reporter: Prabhu Joseph


hdfs_resource currently checks only file size while copying a resource into 
Hdfs, it has to be reimplemented using checksum.

This impacts when changing a config value like 1 -> 2 where the filesize 
remains same.

{code}
hdfs_resource.py

  # TODO: re-implement this using checksums
        if local_file_size == length:
          Logger.info(format("DFS file {target} is identical to {source}, 
skipping the copying"))
          return
        elif not self.main_resource.resource.replace_existing_files:
          Logger.info(format("Not replacing existing DFS file {target} which is 
different from {source}, due to replace_existing_files=False"))
          return
{code}



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