Bob Hansen created HDFS-9144:
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Summary: Refactor libhdfs into stateful/ephemeral objects
Key: HDFS-9144
URL: https://issues.apache.org/jira/browse/HDFS-9144
Project: Hadoop HDFS
Issue Type: Sub-task
Affects Versions: HDFS-8707
Reporter: Bob Hansen
In discussion for other efforts, we decided that we should separate several
concerns:
* A posix-like FileSystem/FileHandle object (stream-based, positional reads)
* An ephemeral ReadOperation object that holds the state for reads-in-progress,
which consumes
* An immutable FileInfo object which holds the block map and file size (and
other metadata about the file that we assume will not change over the life of
the file)
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