ARROW-2822: [C++] Zero padding bytes in PoolBuffer#2239

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alendit wants to merge 53 commits intoapache:masterfrom

alendit:zero-padding

Commits on Jul 19, 2018

Add buffer zeroing on allocation and fix copy
Dimitri Vorona
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Prefer using AllocateBuffer, zero padding where it's impossible
Dimitri Vorona
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Add warning on unfinished buffers and fix some problems
Dimitri Vorona
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Don't pass shrink_to_fit
Dimitri Vorona
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Move finished state unsetting to UnsafeAppendBitmap
Dimitri Vorona
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More consistency with padding zeroing
Dimitri Vorona
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Consume overflow dicts status
Dimitri Vorona
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Fix NullBuilder and use it in python to arrow conversion
Dimitri Vorona
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Prevent a builder unfinished warning
Dimitri Vorona
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Formatting
Dimitri Vorona
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Consume status
Dimitri Vorona
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Decrease log level
Dimitri Vorona
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Avoid raw data access on unfinished buffer in dictionary
Dimitri Vorona
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Add a builder reset method and fix some tests
Dimitri Vorona
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Remove data() and null_bitmap() methods from builder
Dimitri Vorona
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Fix comment
Dimitri Vorona
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Revert NullBuilder changes
Dimitri Vorona
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Switch nones_ from NullBuilder to BooleanBuilder
Dimitri Vorona
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Adjust orc adapter to not to use builders internals
Dimitri Vorona
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Add data() and null_bitmap() with deprecation warning
Dimitri Vorona
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Remove outdated comments
Dimitri Vorona
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Remove extra semicolon
Dimitri Vorona
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Consume status in test
Dimitri Vorona
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Add AppendValues method which uses iterators and avoid copies in orc adapter
Dimitri Vorona
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WIP lazy iterator
Dimitri Vorona
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Add tests and benchmark to lazy range
Dimitri Vorona
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Fix lint warnings
Dimitri Vorona
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Remove couple of unneeded things
Dimitri Vorona
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Change the iterator category
Dimitri Vorona
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Fix comment
Dimitri Vorona
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Fix compiler warnings
Dimitri Vorona
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Formatting
Dimitri Vorona
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Fix comment
Dimitri Vorona
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Avoid code duplication
Dimitri Vorona
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Assert lazy iterator is const
Dimitri Vorona
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Deduce type from 0 argument
Dimitri Vorona
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lol msvc
Dimitri Vorona
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Don't include benchmark_main in the benchmark
Dimitri Vorona
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msvc complains about unchecked iterators
Dimitri Vorona
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Whoops, old includes
Dimitri Vorona
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Second try to make msvc happy about iterators
Dimitri Vorona
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Suppress msvc compiler warning about narrowing conversion
Dimitri Vorona
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Better disable warning
Dimitri Vorona
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Maybe like this?
Dimitri Vorona
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Try function scope suppression
Dimitri Vorona
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Handle custom template cases
Dimitri Vorona
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Formatting
Dimitri Vorona
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Convert to the correct type
Dimitri Vorona
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Fix lint warning about nullptr
Dimitri Vorona
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More consisten handling of null values
Dimitri Vorona
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Handle nullptr for iterators
Dimitri Vorona
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More precise nullptr use detection
Dimitri Vorona
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Cleanup
Dimitri Vorona
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