[HADOOP-14580] Sample mount table in ViewFs.md contains capitalization error

• Type: Bug
• Status: Patch Available
• Priority: Trivial
• Resolution: Unresolved
• Component/s: viewfs
• Assignee: Chen Liang
• Reporter: Todd Owen
• Created: 23/Jun/17 06:02
• Updated: 11/Feb/19 09:22

Description

In this file: https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/ViewFs.md

The rest of the document refers to clusterX, but the sample mount table uses the incorrect capitalisation ClusterX.

It took me a little while to figure out why my experiments were not working. This is compounded by the fact that errors from viewfs are not very descriptive, e.g.:

$ hdfs dfs -ls /
ls: viewfs://clusterX/
$ hdfs dfs -cat /xyz
cat: viewfs://clusterX/

Suggested fix is to replace the 5 instances of ClusterX with clusterX. And ideally improve the error message to something like:

$ hdfs dfs -ls /
ls: viewfs://clusterX/: No such property fs.viewfs.mounttable.clusterX.link.*