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backoff if we retried polling for more than 50 times in less than 30m… #3232

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merged 4 commits into from
Apr 9, 2024
Merged

backoff if we retried polling for more than 50 times in less than 30m… #3232

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177cab9
backoff if we retried polling for more than 50 times in less than 30m…
aiqiaoy Apr 5, 2024
3f38bf3
run dotnet format
aiqiaoy Apr 5, 2024
0456a88
move delay to after no message trace
aiqiaoy Apr 9, 2024
ab89ec4
run dotnet format
aiqiaoy Apr 9, 2024
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12 changes: 12 additions & 0 deletions src/Runner.Listener/MessageListener.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -236,6 +236,7 @@ public async Task<TaskAgentMessage> GetNextMessageAsync(CancellationToken token)
ArgUtil.NotNull(_settings, nameof(_settings));
bool encounteringError = false;
int continuousError = 0;
int continuousEmptyMessage = 0;
string errorMessage = string.Empty;
Stopwatch heartbeat = new();
heartbeat.Restart();
Expand Down Expand Up @@ -359,16 +360,27 @@ public async Task<TaskAgentMessage> GetNextMessageAsync(CancellationToken token)

if (message == null)
{
continuousEmptyMessage++;
if (heartbeat.Elapsed > TimeSpan.FromMinutes(30))
{
Trace.Info($"No message retrieved from session '{_session.SessionId}' within last 30 minutes.");
heartbeat.Restart();
continuousEmptyMessage = 0;
}
else
{
Trace.Verbose($"No message retrieved from session '{_session.SessionId}'.");
}

if (continuousEmptyMessage > 50)
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@aiqiaoy aiqiaoy Apr 9, 2024 •
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Moved this check to after the "No message retrieved" trace on 372. So the logs

[MessageListener] No message retrieved from session 'b121baf0-675f-40ad-8a22-818222aaf54e'.
[MessageListener] Sleeping for 25.893 seconds before retrying.

instead of

[MessageListener] Sleeping for 25.893 seconds before retrying.
[MessageListener] No message retrieved from session 'b121baf0-675f-40ad-8a22-818222aaf54e'.

{
// retried more than 50 times in less than 30mins and still getting empty message
// something is not right on the service side, backoff for 15-30s before retry
_getNextMessageRetryInterval = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(15), TimeSpan.FromSeconds(30), _getNextMessageRetryInterval);
Trace.Info("Sleeping for {0} seconds before retrying.", _getNextMessageRetryInterval.TotalSeconds);
await HostContext.Delay(_getNextMessageRetryInterval, token);
}

continue;
}

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