Istvan Fajth created HDDS-3721:
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Summary: Implement getContentSummary to provide replicated size
properly to dfs -du command
Key: HDDS-3721
URL: https://issues.apache.org/jira/browse/HDDS-3721
Project: Hadoop Distributed Data Store
Issue Type: Improvement
Reporter: Istvan Fajth
Currently when you run hdfs dfs -du command against a path on Ozone, it uses
the default implementation from FileSystem class in the Hadoop project, and
that does not care to calculate with replication factor by default. In
DistributedFileSystem and in a couple of FileSystem implementation there is an
override to calculate the full replicated size properly.
Currently the output is something like this for a folder which has file with
replication factor of 3:
{code}
hdfs dfs -du -s -h o3fs://perfbucket.volume.ozone1/terasort/datagen
931.3 G 931.3 G o3fs://perfbucket.volume.ozone1/terasort/datagen
{code}
The command in Ozone's case as well should report the replicated size az the
second number so something around 2.7TB in this case.
In order to do so, we should implement getContentSummary and calculate the
replicated size in the response properly in order to get there.
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