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https://issues.apache.org/jira/browse/HDFS-1303?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo (Nicholas), SZE resolved HDFS-1303.
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Assignee: Tsz Wo (Nicholas), SZE
Resolution: Duplicate
> StreamFile.doGet(..) uses an additional RPC to get file length
> --------------------------------------------------------------
>
> Key: HDFS-1303
> URL: https://issues.apache.org/jira/browse/HDFS-1303
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: data-node
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
>
> {code}
> //StreamFile.doGet(..)
> long fileLen = dfs.getFileInfo(filename).getLen();
> FSInputStream in = dfs.open(filename);
> {code}
> In the codes above, t is unnecessary to call getFileInfo(..), which is an
> additional RPC to namenode. The file length can be obtained from the input
> stream after open(..).
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