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Can alluxio mount oss bucket directly?

See original GitHub issue

Alluxio Version: What version of Alluxio are you using?

2.7.3-SNAPSHOT

Describe the bug A clear and concise description of what the bug is.

To Reproduce Steps to reproduce the behavior (as minimally and precisely as possible)

I tried to mount oss bucket test to alluxio file system, and run ls. There are no files

alluxio fs mount --option fs.oss.endpoint=oss-cn-shanghai-internal.aliyuncs.com --option fs.oss.accessKeyId=abc --option fs.oss.accessKeySecret=efg /abc oss://test/
Mounted oss://wdl-shanghai/ at /abc
alluxio fs ls /abc
alluxio fs umount /abc
Unmounted /abc

Instead I tried with the directory oss://test/tfrecords under the ossbucket, it works.

alluxio fs mount --option fs.oss.endpoint=oss-cn-shanghai-internal.aliyuncs.com --option fs.oss.accessKeyId=abc --option fs.oss.accessKeySecret=efg /abc oss://test/tfrecords
Mounted oss://wdl-shanghai/tfrecords at /abc
alluxio fs ls /abc
              0       PERSISTED 01-19-2022 07:28:08:958  DIR /abc/transformed_metadata
           1180       PERSISTED 12-28-2020 12:12:08:000   0% /abc/transformed_metadata.tar.gz
              0       PERSISTED 01-19-2022 07:28:08:960  DIR /abc/train

I am wondering if it’s as design.

Expected behavior A clear and concise description of what you expected to happen.

Urgency Describe the impact and urgency of the bug.

Are you planning to fix it Please indicate if you are already working on a PR.

Additional context Add any other context about the problem here.