BufferedDFSInputStream
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Key: HDFS-926
URL: https://issues.apache.org/jira/browse/HDFS-926
Project: Hadoop HDFS
Issue Type: Wish
Components: hdfs client
Reporter: Zlatin Balevsky
Priority: Minor
Self-explanatory. Buffer size can be provided in number of blocks. Could be
implemented trivially with heap storage and several BlockReaders or could have
more advanced features like:
* logic to ensure that blocks are not pulled from the same Datanode(s).
* local filesystem store for buffered blocks
* adaptive parallelism
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