lostluck commented on a change in pull request #11413: [BEAM-9746] check for 0
length copies from state
URL: https://github.com/apache/beam/pull/11413#discussion_r408354342
##########
File path: sdks/go/pkg/beam/core/runtime/harness/datamgr.go
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@@ -369,11 +371,14 @@ func (r *dataReader) Read(buf []byte) (int, error) {
r.cur = b
}
+ // We don't need to check for a 0 length copy from r.cur here, since
that's
+ // checked before buffers are handed to the r.buf channel.
n := copy(buf, r.cur)
- if len(r.cur) == n {
+ switch {
Review comment:
It could but I like the consistency in handling between the statemgr and
datamgr code, hence the no-op/comment only change.
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