A task submitter which is closeable, and whose close() call shuts down the pool.
Future IO Helper methods.
A set of remote iterators supporting transformation and filtering, with IOStatisticsSource passthrough, and of conversions of the iterators to lists/arrays and of performing actions on the values.
Pretty much all the Hadoop FS APIs raise IOExceptions, hence the need for these classes. If Java had made a different decision about the nature of exceptions, life would be better.Do note that the
RemoteIteratorsiterators go beyond that of the java ones, in terms of declaring themselves Closeable and implementors of
IOStatisticsSource; a chain of wrapped iterators can supply statistics of the inner iterators, and encourage close() to be called after use.
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