in dbeam-core/src/main/java/com/spotify/dbeam/beam/MetricsHelper.java [87:98]
private static void addCalculatedMetrics(
final Map<String, Long> counters, final Map<String, Long> ret) {
// calculate and add KBps
final Long writeElapsedMs = counters.get("writeElapsedMs");
final Long kbps;
if (writeElapsedMs != null && writeElapsedMs > 0) {
kbps = counters.get("bytesWritten") / writeElapsedMs;
} else {
kbps = -1L;
}
ret.put("KbWritePerSec", kbps);
}