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DataSegment memory optimizations#5094

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gianm merged 18 commits intoapache:masterapache/druid:masterfrom metamx:fat-data-segmentsmetamx/druid:fat-data-segmentsCopy head branch name to clipboardDec 12, 2017

+417-327

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Commits on Nov 16, 2017

• Deduplicate DataSegments contents (loadSpec's keys, dimensions and metrics lists as a whole) more aggressively; use ArrayMap instead of default LinkedHashMap for DataSegment.loadSpec, because they …

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• Fix DataSegmentTest

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• Refinements

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• Try to fix

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• Fix the second DataSegmentTest

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Commits on Nov 21, 2017

• Merge remote-tracking branch 'upstream/master' into fat-data-segments

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• Nullability

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• Fix tests

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• Fix tests, unify to use TestHelper.getJsonMapper()

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Commits on Nov 22, 2017

• Revert TestUtil as ServerTestHelper, fix tests

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• Add newline

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• Fix indexing tests

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• Fix s3 tests

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• Try to fix tests, remove lazy caching of ObjectMapper in TestHelper, rename TestHelper.getJsonMapper() to makeJsonMapper()

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• Fix HDFS tests

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• Fix HdfsDataSegmentPusherTest

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Commits on Dec 5, 2017

• Merge remote-tracking branch 'upstream/master' into fat-data-segments

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• Capitalize constant names

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