Mikhail Erofeev created HDFS-12292:
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Summary: Federation: Support viewfs:// schema path for DfsAmdin
commands
Key: HDFS-12292
URL: https://issues.apache.org/jira/browse/HDFS-12292
Project: Hadoop HDFS
Issue Type: Improvement
Components: federation
Reporter: Mikhail Erofeev
Assignee: Mikhail Erofeev
Motivation:
As of now, clients need to specify a nameservice when a cluster is federated,
otherwise, the exception is fired:
{code}
hdfs dfsadmin -setQuota 10 viewfs://vfs-root/user/uname
setQuota: FileSystem viewfs://vfs-root/ is not an HDFS file system
# with fs.defaultFS = viewfs://vfs-root/
hdfs dfsadmin -setQuota 10 vfs-root/user/uname
setQuota: FileSystem viewfs://vfs-root/ is not an HDFS file system
# works fine thanks to https://issues.apache.org/jira/browse/HDFS-11432
# hdfs dfsadmin -setQuota 10 hdfs://users-fs/user/uname
{code}
This creates inconvenience, inability to rely on fs.defaultFS and forces to
create client-side mappings for management scripts
Implementation:
PathData that is passed to commands should be resolved to its actual FileSystem
Result:
ViewFS will be resolved to the actual HDFS file system
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