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[NSE-53]Partial fix Q24a/Q24b tail SHJ task materialization performance issue #54
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Signed-off-by: Chendi Xue <[email protected]>
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Signed-off-by: Chendi Xue <[email protected]>
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Fixed: #53
This Issue is due to some join task in 24a/24b will expand input table 1000 times, which leads to output result contains 100 million + numRows, so the materialization is extremely slow
in this PR, we tried to accelerate materialization
TODO:
If we can merge this Join with following Aggregate in a whole stage code gen, this issue may be fully fixed.