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Reduce Web home page reliance on ufs mount points

Description

Web home page get under filesystem total/used capacity of root mount point. However, it gets the whole mount table. When we generate the mount point info of a mount point, we call `ufs.getSpace()`. and `ufs.getSpace` is only implemented in hdfs. If hdfs mount points are unavailable, the web ui home page may have some latency issue.

Environment

None

Status

Assignee

Lu Qiu

Reporter

Lu Qiu

Labels

None

Fix versions

Affects versions

master

Priority

Major