Better error message for missing namenode directory
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Key: HDFS-1959
URL: https://issues.apache.org/jira/browse/HDFS-1959
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Eli Collins
Assignee: Eli Collins
Priority: Minor
Fix For: 0.23.0
Attachments: hdfs-1959-1.patch
Starting the namenode with a missing NN directory currently results in two
stack traces, "Expecting a line not the end of stream" from DF and an NPE.
Let's make this more user-friendly.
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