Github user mgaido91 commented on the issue:
https://github.com/apache/spark/pull/22338
>This does fix the regression, will we also lose the perf speed up too?
IIUC we did observe significant perf boost when introducing the memory block.
@cloud-fan I checked the original PR and I couldn't find any benchmark
related to Murmur3 hash. The only benchmark I found there was using the
`HiveHasher`. So I cannot really answer on this. Do you have a benchmark to
test it? Thanks.
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