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https://issues.apache.org/jira/browse/HDFS-1287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo (Nicholas), SZE resolved HDFS-1287.
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Resolution: Not A Problem
We do not use TreeSet in FSDataset now. This is no longer a problem.
> Why TreeSet is used when collecting block information
> FSDataSet::getBlockReport
> -------------------------------------------------------------------------------
>
> 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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