fs mount command show all mount point as ufs type local after master restart

Alluxio Version: 2.0.0-preview

Describe the bug

// Start alluxio
$./bin/alluxio-start.sh all SudoMount
// Mount s3 to alluxio
$./bin/alluxio fs mount --option aws.accessKeyId=**** --option aws.secretKey=*** /s3-mnt s3a://alluxio-test/
// fs mount show the right ufs type s3
$./bin/alluxio fs mount
s3a://alluxio-test-fuse/                             on  /s3-mnt  (s3, capacity=-1B, used=-1B, not read-only, not shared, properties={aws.secretKey=*****, aws.accessKeyId=*****})
/Users/alluxio/alluxioFolder/alluxio/underFSStorage  on  /        (local, capacity=464.77GB, used=-1B(0%), not read-only, not shared, properties={})

// restart alluxio
$./bin/alluxio-start.sh all SudoMount

// All mount point ufs type is local now
$./bin/alluxio fs mount
s3a://alluxio-test-fuse/                             on  /s3-mnt  (local, capacity=-1B, used=-1B, not read-only, not shared, properties={aws.secretKey=*****, aws.accessKeyId=*****})
/Users/alluxio/alluxioFolder/alluxio/underFSStorage  on  /        (local, capacity=464.77GB, used=-1B(0%), not read-only, not shared, properties={})

Expected behavior Ufs type should always show the right value across master restart

[LuQQiu]

It affects one of the future PR which is about hiding the aws (or other object stores) secret keys. I will take a look into this issue when I am working on that PR.

[LuQQiu]

I checked that branch 1.8 do not have this issue. It’s a newly occurred issue. Fixed in #8885