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Immediately fetch another batch when a full set of job is returned #663

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Immediately fetch another batch when a full set of job is returned #663

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11 changes: 9 additions & 2 deletions producer.go
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Original file line number Diff line number Diff line change
Expand Up @@ -447,7 +447,7 @@ func (p *producer) fetchAndRunLoop(fetchCtx, workCtx context.Context, fetchLimit
if p.paused {
continue
}
p.innerFetchLoop(workCtx, fetchResultCh)
p.innerFetchLoop(workCtx, fetchResultCh, fetchLimiter)
// Ensure we can't start another fetch when fetchCtx is done, even if
// the fetchLimiter is also ready to fire:
select {
Expand All @@ -461,7 +461,7 @@ func (p *producer) fetchAndRunLoop(fetchCtx, workCtx context.Context, fetchLimit
}
}

func (p *producer) innerFetchLoop(workCtx context.Context, fetchResultCh chan producerFetchResult) {
func (p *producer) innerFetchLoop(workCtx context.Context, fetchResultCh chan producerFetchResult, fetchLimiter *chanutil.DebouncedChan) {
limit := p.maxJobsToFetch()
go p.dispatchWork(workCtx, limit, fetchResultCh)

Expand All @@ -472,6 +472,13 @@ func (p *producer) innerFetchLoop(workCtx context.Context, fetchResultCh chan pr
p.Logger.ErrorContext(workCtx, p.Name+": Error fetching jobs", slog.String("err", result.err.Error()))
} else if len(result.jobs) > 0 {
p.startNewExecutors(workCtx, result.jobs)

// Fetch returned the maximum number of jobs that were requested
// which implies there may be more in the queue so trigger another
// fetch right after this one.
if len(result.jobs) == limit {
fetchLimiter.Call()
}
}
return
case result := <-p.jobResultCh:
Expand Down