pitrou commented on code in PR #41352:
URL: https://github.com/apache/arrow/pull/41352#discussion_r1599954581
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cpp/src/arrow/compute/row/grouper.cc:
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@@ -595,7 +598,13 @@ struct GrouperFastImpl : public Grouper {
return std::move(impl);
}
- ~GrouperFastImpl() { map_.cleanup(); }
+ Status Reset() override {
+ rows_.Clean();
+ rows_minibatch_.Clean();
+ map_.cleanup();
+ RETURN_NOT_OK(map_.init(encode_ctx_.hardware_flags, ctx_->memory_pool()));
Review Comment:
Can you perhaps add a comment about `dictionaries_` then?
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