NamenodeFsck.toString() uses StringBuilder with + operator -----------------------------------------------------------
Key: HDFS-2238
URL: https://issues.apache.org/jira/browse/HDFS-2238
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Tsz Wo (Nicholas), SZE
Priority: Minor
We should always use StringBuilder.append(..) but not + (string concatenation).
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