[SPARK-25904][CORE] Allocate arrays smaller than Int.MaxValue #22983
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JVMs can't allocate arrays of length exactly Int.MaxValue, so ensure we never try to allocate an array that big. This commit changes some defaults & configs to gracefully fallover to something that doesn't require one large array in some cases; in other cases it simply improves an error message for cases which will still fail.
Closes #22818 from squito/SPARK-25827.
Authored-by: Imran Rashid [email protected]
Signed-off-by: Imran Rashid [email protected]
(cherry picked from commit 8fbc183)
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