[Data] Fixing DelegatingBlockBuilder to avoid re-serializing objects multiple times#48509
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bveeramani merged 2 commits intoray-project:masterfrom Nov 13, 2024
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Signed-off-by: Alexey Kudinkin <ak@anyscale.com>
DelegatingBlockBuilder to avoid re-serializing objects multiple timesDelegatingBlockBuilder to avoid re-serializing objects multiple times
DelegatingBlockBuilder to avoid re-serializing objects multiple timesDelegatingBlockBuilder to avoid re-serializing objects multiple times
alexeykudinkin
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Nov 12, 2024
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| import pyarrow | ||
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| if self._builder is None: | ||
| try: | ||
| check = ArrowBlockBuilder() | ||
| check.add(item) | ||
| check.build() | ||
| self._builder = ArrowBlockBuilder() | ||
| except (TypeError, pyarrow.lib.ArrowInvalid, ArrowConversionError): | ||
| # Can also handle nested Python objects, which Arrow cannot. | ||
| self._builder = PandasBlockBuilder() |
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These fallbacks are no longer necessary since Arrow now support ArrowPythonObjectType allowing to fallback to serializing rows as native Python objects (using pickle)
bveeramani
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Nov 12, 2024
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Nov 14, 2024
…s multiple times (ray-project#48509) Currently, we're serializing first row in every block twice when adding it t/h `DelegatingBlockBuilder`, carrying tangible overhead and impact on latency for large enough rows. Provided that `ArrowBlockBuilder` is now able to handle arbitrary Python object we can just deprecate `DelegatingBlockBuilder` altogether. --------- Signed-off-by: Alexey Kudinkin <ak@anyscale.com>
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Why are these changes needed?
Currently, we're serializing first row in every block twice when adding it t/h
DelegatingBlockBuilder, carrying tangible overhead and impact on latency for large enough rows.Provided that
ArrowBlockBuilderis now able to handle arbitrary Python object we can just deprecateDelegatingBlockBuilderaltogether.Related issue number
Checks
git commit -s) in this PR.scripts/format.shto lint the changes in this PR.method in Tune, I've added it in
doc/source/tune/api/under thecorresponding
.rstfile.