FileStatus should have a field "isUnderConstruction"
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Key: HDFS-878
URL: https://issues.apache.org/jira/browse/HDFS-878
Project: Hadoop HDFS
Issue Type: New Feature
Reporter: Zheng Shao
Assignee: Zheng Shao
Currently DFSClient has no way to know whether a file is under construction or
not, unless we open the file and get locatedBlocks (which is much more costly).
However, the namenode knows whether each INode is under construction or not.
We should expose that information from NameNode.getListing(), to
DFSClient.listPaths(), to DistributedFileSystem.listStatus().
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