This turned out to be my confusion in ARROW-13344: because the ScanNode takes a filter and projection, I wasn't creating a FilterNode because I assume that the filter is already applied--why else would I provide a filter to the ScanNode? But it turns out that if you don't Filter again, you get unfiltered results:

Table$create(
  group=c(1, 2), 
  value=c(5, 6)
) %>% 
  filter(value > 5) %>% 
  group_by(group) %>% 
  summarize(sum(value)) %>% 
  collect()

# A tibble: 2 x 2
  group `sum(value)`
  <dbl>        <dbl>
1     1            5
2     2            6

Reporter: Neal Richardson / @nealrichardson

Related issues:

• [C++] ScanNode is not using the filter expression (is duplicated by)
• [R] Initial bindings for ExecPlan/ExecNode (relates to)

_{Note: This issue was originally created as ARROW-13498. Please see the migration documentation for further details.}