fix: recv_fifo for asyncfl #449
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recv_fifo() takes first_k as one of its arguments to determine the first_k number of messages are received and returned. To implement the functionality, asynchronous call _streamer_for_recv_fifo() was implemented. However the function has a bug that is triggered in asyncfl. The function adds the first_k messages into an rx queue and re-adds the remaining messages to the head of each corresponding end id's rx queue. The remaining messages then processed in the next recv_fifo call. However, since _streamer_for_recv_fifo() is an asynchronous call, there is no guarantee that the messages saved in the previous call will be processed first. This causes some trainers blocked and made them fail to participate future rounds. The issue is fixed as follows. Since recv_fifo() always returns first_k number of messages from the rx queue, there is no harm even if the remaining messages are added to the queue. By removing all the code to handle the remaining code, the code becomes now clean and easy to understand.
Codecov Report
❗ Your organization needs to install the Codecov GitHub app to enable full functionality. @@ Coverage Diff @@
## main #449 +/- ##
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Coverage 14.82% 14.82%
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Files 48 48
Lines 2827 2827
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Hits 419 419
Misses 2379 2379
Partials 29 29 |
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Description
recv_fifo() takes first_k as one of its arguments to determine the first_k number of messages are received and returned.
To implement the functionality, asynchronous call
_streamer_for_recv_fifo() was implemented. However the function has a bug that is triggered in asyncfl. The function adds the first_k messages into an rx queue and re-adds the remaining messages to the head of each corresponding end id's rx queue. The remaining messages then processed in the next recv_fifo call. However, since _streamer_for_recv_fifo() is an asynchronous call, there is no guarantee that the messages saved in the previous call will be processed first. This causes some trainers blocked and made them fail to participate future rounds.
The issue is fixed as follows. Since recv_fifo() always returns first_k number of messages from the rx queue, there is no harm even if the remaining messages are added to the queue. By removing all the code to handle the remaining code, the code becomes now clean and easy to understand.
Type of Change
Checklist