Optimize dictExpand of empty dict#12847
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soloestoy merged 1 commit intoredis:unstablefrom Dec 8, 2023
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If a dict is empty before
dictExpand, we don't need to do rehashing actually. We can just create a new dict and set it as ht_table[0] to skip incremental rehashing and free the memory quickly.With this PR, I think we can resize empty dicts in
tryResizeHashTablesas introduced in #12819.