priyansndesai commented on code in PR #31420:
URL: https://github.com/apache/beam/pull/31420#discussion_r1617638363
##########
sdks/go/pkg/beam/core/runtime/exec/datasource.go:
##########
@@ -125,9 +130,16 @@ func (n *DataSource) process(ctx context.Context, data
func(bcr *byteCountReader
bcr := byteCountReader{reader: &r, count: &byteCount}
for {
+ // The SDK is currently waiting for the Runner to send data for
it to be
+ // processed. Hence, the boolean is marked as true.
+ n.waitingForRunnerToSendData.Store(true)
var err error
select {
case e, ok := <-elms:
+ // Upon receiving some item from the Runner, the SDK is
busy. Hence, the
+ // boolean is marked as false as it is not waiting for
the Runner to send
+ // it anything.
Review Comment:
Done.
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