Prometheus exporter counters are flattened for queues and threads

[mathias-lolo]

vpp_get_stats

vpp_get_stats dump /if/rx | awk -v idx="$IFIDX" '
/\/if\/rx$/ {
    match($0, /\[([0-9]+) @ ([0-9]+)\]: ([0-9]+) packets/, a)
    if (a[1] == idx) printf "thread=%s  packets=%d\n", a[2], a[3]
}' | sort -t= -k2 -n
thread=0  packets=0
thread=1  packets=0
thread=2  packets=0
thread=3  packets=0
thread=4  packets=0
thread=5  packets=127098
thread=6  packets=129992
thread=7  packets=160072
thread=8  packets=135293

prometheus exporter

curl -s localhost:9482/metrics   | grep "interfaces_rx_q.*packets.*interface=\"$IFNAME\""   | awk '
{            
    match($0, /thread="([0-9]+)"/, tarr)
    match($0, / ([0-9]+)$/, varr)
    threads[tarr[1]] += varr[1]
}
END {
    for (th in threads) printf "thread=%s  packets=%d\n", th, threads[th]
}' | sort -t= -k2 -n
thread=0  packets=553560
thread=1  packets=0
thread=2  packets=0
thread=3  packets=0
thread=4  packets=0
thread=5  packets=0
thread=6  packets=0
thread=7  packets=0
thread=8  packets=0

In src/vpp/app/dump_metrics.c in print_metric_v2 loop variables(j,k) are swapped causing all counters to be summarized (LLM tells me).
This seems to be the same for both packets and bytes.