getInputSummary() to call FileSystem.getContentSummary() in parallel
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Key: HIVE-2051
URL: https://issues.apache.org/jira/browse/HIVE-2051
Project: Hive
Issue Type: Improvement
Reporter: Siying Dong
Priority: Minor
getInputSummary() now call FileSystem.getContentSummary() one by one, which can
be extremely slow when the number of input paths are huge. By calling those
functions in parallel, we can cut latency in most cases.
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