MAPREDUCE-7315. LocatedFileStatusFetcher to collect/publish IOStatistics. #2579
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…ics. Part of HADOOP-16830 IOStatistics Support. Contributed by Steve Loughran. Change-Id: Ia8ef893b5d7cee0000ed4d6e928bf315db69ab1d
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…ics. (apache#2579) Part of the HADOOP-16830 IOStatistics API feature. If the source FileSystem's listing RemoteIterators implement IOStatisticsSource, these are collected and served through the IOStatisticsSource API. If they are not: getIOStatistics() returns null. Only the listing statistics are collected; FileSystem.globStatus() doesn't provide any, so IO use there is not included in the aggregate results. Contributed by Steve Loughran. Change-Id: Iff1485297c2c7e181b54eaf1d2c4f80faeee7cfa
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…ics. (#2579) Part of the HADOOP-16830 IOStatistics API feature. If the source FileSystem's listing RemoteIterators implement IOStatisticsSource, these are collected and served through the IOStatisticsSource API. If they are not: getIOStatistics() returns null. Only the listing statistics are collected; FileSystem.globStatus() doesn't provide any, so IO use there is not included in the aggregate results. Contributed by Steve Loughran. Change-Id: Iff1485297c2c7e181b54eaf1d2c4f80faeee7cfa
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…sh IOStatistics. (apache#2579) Part of the HADOOP-16830 IOStatistics API feature. If the source FileSystem's listing RemoteIterators implement IOStatisticsSource, these are collected and served through the IOStatisticsSource API. If they are not: getIOStatistics() returns null. Only the listing statistics are collected; FileSystem.globStatus() doesn't provide any, so IO use there is not included in the aggregate results. Contributed by Steve Loughran. Change-Id: Iff1485297c2c7e181b54eaf1d2c4f80faeee7cfa
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Part of HADOOP-16830 IOStatistics Support.
Contributed by Steve Loughran.
Tests are in hadoop-aws so excluded here
full PR already reviewed by @bgaborg in #2553; this is the feature split up by module for better isolation/backport