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ingester: shortcut fetchWants that have already been satisfied #9891

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ingester: shortcut fetchWants that have already been satisfied #9891

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4 changes: 4 additions & 0 deletions pkg/storage/ingest/fetcher.go
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Original file line number Diff line number Diff line change
Expand Up @@ -702,6 +702,10 @@ func (r *concurrentFetchers) start(ctx context.Context, startOffset int64, concu
}
nextFetch = nextFetch.UpdateBytesPerRecord(result.fetchedBytes, len(result.Records))

for recs := result.Records; len(recs) > 0 && recs[len(recs)-1].Offset >= nextFetch.endOffset; {
// We just received some records. If the nextFetch is already covered by these, then we can avoid fetching it.
nextFetch = nextFetch.Next(recordsPerFetch)
}
// We have some ordered records ready to be sent to PollFetches(). We store the fetch
// result in bufferedResult, and we flip readyBufferedResults to the channel used by
// PollFetches().
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