vagetablechicken commented on a change in pull request #3143: Non blocking
OlapTableSink
URL: https://github.com/apache/incubator-doris/pull/3143#discussion_r395959565
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File path: be/src/exec/tablet_sink.cpp
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@@ -877,5 +920,24 @@ int OlapTableSink::_validate_data(RuntimeState* state,
RowBatch* batch, Bitmap*
return filtered_rows;
}
+void OlapTableSink::_send_batch_process() {
+ SCOPED_RAW_TIMER(&_non_blocking_send_ns);
+ while (true) {
+ int running_channels_num = 0;
+ for (auto index_channel : _channels) {
+ index_channel->for_each_node_channel([&](NodeChannel* ch) {
+ running_channels_num += ch->try_send_and_fetch_status();
+ });
+ }
+
+ if (running_channels_num == 0) {
+ LOG(INFO) << "all node channels are stopped(maybe
finished/offending/cancelled), "
+ "consumer thread exit.";
+ return;
+ }
+ std::this_thread::yield();
Review comment:
Yes, it's the easiest to implement, but not good enough. I've consider about
writing an algorithm that can choose the property sleep interval, e.g. if every
channel is empty, we can sleep for a while. bla bla bla
But taking the trouble to do this may lead to small gains.
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