arvindshmicrosoft opened a new pull request #356:
URL: https://github.com/apache/fluo-muchos/pull/356
* Explicitly specify the data directory for the non-HA checkpoint
(secondary namenode) to use (in a non-HA config)
* Rearrange some elements in the hdfs-site.xml file in a more logical order
* Use HDFS namespace (using nameservice_id) in non-HA cases as well (HA
config already uses it). This change allows using the nameservice_id
as a stable and simple way to reference namenodes regardless of
whether HA is used / or not
* Configure the use of ConfiguredFailoverProxyProvider in non-HA cases
as well (HA config already used it), so that namespace can be resolved
to physical namenodes in all cases
[Reference from Hadoop
docs](https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/Federation.html#Federation_Configuration)
- though this is a doc for HDFS federation
the specific change in this PR is orthogonal and merely aims to
normalize hdfs-site.xml across both HA / standalone configurations.
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