Unsupported Filesystem Operations
The cloud object stores do not offer support the complete
set of of hadoop fs
commands.
In particular, the commands to create, delete and rename snapshots
are all unsupported; the -appendToFile
and
-truncate
likewise unavailable: the objects are immutable,
once written.
Unless the filesystem supports permissions and acls as HDFS,
some or all of the permissions operations will be unsupported:
-chgrp
,
-chmod
,
-chown
,
-getfacl
,
-getfattr
,
-setfacl
, and
-setfattr
.
the -setrep
command is usually ignored, while the
-df
command returns a spurious value (8 Exabytes)
bin/hadoop fs -df adl://alice.azuredatalakestore.net/ Filesystem Size Used Available Use% adl://alice.azuredatalakestore.net 9223372036854775807 0 9223372036854775807 0%