HIVE-29503: Use the fallback of half the number of rows when estimating the join product row count with an NDV of 0#6356
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…ng the join product row count with an NDV of 0
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What changes were proposed in this pull request?
HIVE-29503: Use the fallback of half the number of rows when estimating the join product row count with an NDV of 0
Why are the changes needed?
Does this PR introduce any user-facing change?
How was this patch tested?