fix transform operator for countByKey #3175
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umar456
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Sep 30, 2021
9prady9
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Oct 5, 2021
* fix transform operator for countByKey (cherry picked from commit 2444ef5)
syurkevi
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* fix transform operator for countByKey (cherry picked from commit 2444ef5)
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Fixes Issue #3062 where countByKey would give incorrect results for any n > 128 (block size). When there is more than one block's worth of reduction, multiple reduction iterations occur.
The af_nonzero_t transformation would reset the reduced values back to a non-zero flag (1) instead of the actual count between reduction iterations. This operator is now replaced with the af_add_t operator in consequent iterations.