rtpsw commented on code in PR #34311:
URL: https://github.com/apache/arrow/pull/34311#discussion_r1124230571
##########
cpp/src/arrow/compute/exec/aggregate_node.cc:
##########
@@ -326,10 +437,22 @@ class ScalarAggregateNode : public ExecNode, public
TracedNode {
}
private:
- Status Finish() {
- auto scope = TraceFinish();
+ Status ResetAggregates() {
+ auto exec_ctx = plan()->query_context()->exec_context();
+ for (size_t i = 0; i < kernels_.size(); ++i) {
+ const std::vector<TypeHolder>& in_types = in_typesets_[i];
+ states_[i].resize(plan()->query_context()->max_concurrency());
+ KernelContext kernel_ctx{exec_ctx};
+ RETURN_NOT_OK(Kernel::InitAll(
+ &kernel_ctx, KernelInitArgs{kernels_[i], in_types,
aggs_[i].options.get()},
+ &states_[i]));
+ }
+ return Status::OK();
+ }
+
+ Status OutputResult(bool is_last = false) {
ExecBatch batch{{}, 1};
- batch.values.resize(kernels_.size());
+ batch.values.resize(kernels_.size() + segment_field_ids_.size());
Review Comment:
These are additional keys passed to the output. For example, if you have
`time` as a segment-key and `key` as a key, then both will be passed to the
output.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
