Improve large dense aggregate reads with tile metadata only. #4657
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The dense reader was creating a bitmap to compute all aggregate results at the top level of the read. For large aggregate reads where we don't need to load any tiles, this could be quite large. It also would turn out to be completely unnecessary. This fix moves the bitmap to the lower level of the read, where a smaller bitmap can be created only if necessary. --- TYPE: IMPROVEMENT DESC: Improve large aggregate reads with tile metadata.
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The dense reader was creating a bitmap to compute all aggregate results at the top level of the read. For large aggregate reads where we don't need to load any tiles, this could be quite large. It also would turn out to be completely unnecessary. This fix moves the bitmap to the lower level of the read, where a smaller bitmap can be created only if necessary. --- TYPE: IMPROVEMENT DESC: Improve large dense aggregate reads with tile metadata only. (cherry picked from commit 598e84e)
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The dense reader was creating a bitmap to compute all aggregate results at the top level of the read. For large aggregate reads where we don't need to load any tiles, this could be quite large. It also would turn out to be completely unnecessary. This fix moves the bitmap to the lower level of the read, where a smaller bitmap can be created only if necessary. --- TYPE: IMPROVEMENT DESC: Improve large dense aggregate reads with tile metadata only. (cherry picked from commit 598e84e)
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… metadata only. (#4661) Backport 598e84e from #4657. Co-authored-by: KiterLuc <[email protected]>
KiterLuc
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Jan 23, 2024
… metadata only. (#4662) Backport 598e84e from #4657. Co-authored-by: KiterLuc <[email protected]>
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The dense reader was creating a bitmap to compute all aggregate results at the top level of the read. For large aggregate reads where we don't need to load any tiles, this could be quite large. It also would turn out to be completely unnecessary. This fix moves the bitmap to the lower level of the read, where a smaller bitmap can be created only if necessary.
TYPE: IMPROVEMENT
DESC: Improve large dense aggregate reads with tile metadata only.