Backport HADOOP-16830 to branch-3.3 #2616
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This is the API and implementation classes of HADOOP-16830,
which allows callers to query IO object instances
(filesystems, streams, remote iterators, ...) and other classes
for statistics on their I/O Usage: operation count and min/max/mean
durations.
New Packages
org.apache.hadoop.fs.statistics.
Public API, including:
IOStatisticsSource
IOStatistics
IOStatisticsSnapshot (seralizable to java objects and json)
+helper classes for logging and integration
BufferedIOStatisticsInputStream
implements IOStatisticsSource and StreamCapabilities
BufferedIOStatisticsOutputStream
implements IOStatisticsSource, Syncable and StreamCapabilities
org.apache.hadoop.fs.statistics.impl
Implementation classes for internal use.
org.apache.hadoop.util.functional
functional programming support for RemoteIterators and
other operations which raise IOEs; all wrapper classes
implement and propagate IOStatisticsSource
Contributed by Steve Loughran.
Change-Id: If56e8db2981613ff689c39239135e44feb25f78e
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OK, patch #1 is in; this only has yetus tests |
…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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Local test runs of the last two patch
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Test s3 london with all good apart from that unbuffer intermittent failures, which I think are network related Unless yetus blows up, I will merge as is |
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build will fail until I commit a change that I had locally but not pushed up. hold on |
S3A connector to support the IOStatistics API of HADOOP-16830, This is a major rework of the S3A Statistics collection to * Embrace the IOStatistics APIs * Move from direct references of S3AInstrumention statistics collectors to interface/implementation classes in new packages. * Ubiquitous support of IOStatistics, including: S3AFileSystem, input and output streams, RemoteIterator instances provided in list calls. * Adoption of new statistic names from hadoop-common Regarding statistic collection, as well as all existing statistics, the connector now records min/max/mean durations of HTTP GET and HEAD requests, and those of LIST operations. Contributed by Steve Loughran. Change-Id: I182d34b6ac39e017a8b4a221dad8e930882b39cf
Caused by HADOOP-16830 and HADOOP-17271. Fixes tests which fail intermittently based on configs and in the case of the HugeFile tests, bulk runs with existing FS instances meant statistic probes sometimes ended up probing those of a previous FS. Contributed by Steve Loughran. Change-Id: I65ba3f44444e59d298df25ac5c8dc5a8781dfb7d
steveloughran
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the
s3/HADOOP-16380-iostats-branch-3.3
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💔 -1 overall
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🎊 +1 overall
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manually merged each commit one by one, signing, pushed up. |
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so somehow we are missing changes to SemaphoredDelegatingExecutor which were in the base patch. joy |
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This a backport of the HADOOP-16830 chain of commits; getting yetus to do the some of the testing. Once I'm happy I'll merge this branch in locally