Why TreeSet is used when collecting block information FSDataSet::getBlockReport
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Key: HDFS-1287
URL: https://issues.apache.org/jira/browse/HDFS-1287
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: NarayanaSwamy
As a return value we are converting this to array and returning and in name
node also we are iterating ... so can we use list onstead of set. (As the block
ids are unique, there may not be duplicates)
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