paleolimbot commented on code in PR #13397:
URL: https://github.com/apache/arrow/pull/13397#discussion_r926785889
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r/R/query-engine.R:
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@@ -81,8 +82,8 @@ ExecPlan <- R6Class("ExecPlan",
# head and tail are not ExecNodes; at best we can handle them via
# SinkNode, so if there are any steps done after head/tail, we need
to
# evaluate the query up to then and then do a new query for the rest.
- # as_record_batch_reader() will build and run an ExecPlan
- node <- self$SourceNode(as_record_batch_reader(.data$.data))
+ # as_arrow_table() will build and run an ExecPlan
+ node <- self$SourceNode(as_arrow_table(.data$.data))
Review Comment:
@nealrichardson Did I do something horrible here? I *think* what this change
does is force the *result* of a `head()` into memory (suboptimal but probably
ok); however, I want to be very sure that I'm not forcing *source* of the
`head()` into memory here (which would be very very bad).
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