Replace hard-coded option strings with variables from DFSConfigKeys
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Key: HDFS-1763
URL: https://issues.apache.org/jira/browse/HDFS-1763
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Eli Collins
Assignee: Eli Collins
Priority: Minor
Fix For: 0.23.0
There are some places in the code where we use hard-coded strings instead of
the equivalent DFSConfigKeys define, and a couple places where the default is
defined multiple places (once in DFSConfigKeys and once elsewhere, though both
have the same value). This is error-prone, and also a pain in that it prevents
eclipse from easily showing you all the places where a particular config option
is used. Let's replace all the uses of the hard-coded option strings with uses
of the corresponding variables in DFSConfigKeys.
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