assertThat(formatDuration(  -999_500_000L)).isEqualTo(" -1 s ")
    assertThat(formatDuration(  -999_499_999L)).isEqualTo("-999 ms")
    assertThat(formatDuration(  -998_500_000L)).isEqualTo("-999 ms")
    assertThat(formatDuration(  -998_499_999L)).isEqualTo("-998 ms")
    assertThat(formatDuration(    -1_499_999L)).isEqualTo(" -1 ms")
    assertThat(formatDuration(      -999_500L)).isEqualTo(" -1 ms")

 */
fun formatDuration(ns: Long): String {
  val s =
    when {
      ns <= -999_500_000 -> "${(ns - 500_000_000) / 1_000_000_000} s "
      ns <= -999_500 -> "${(ns - 500_000) / 1_000_000} ms"
      ns <= 0 -> "${(ns - 500) / 1_000} µs"
      ns < 999_500 -> "${(ns + 500) / 1_000} µs"
      ns < 999_500_000 -> "${(ns + 500_000) / 1_000_000} ms"
      else -> "${(ns + 500_000_000) / 1_000_000_000} s "
    }

  // Non-negative fractions of a second at nanosecond resolution. Negative
  // second values with fractions must still have non-negative nanos values
  // that count forward in time. Must be from 0 to 999,999,999
  // inclusive. This field may be limited in precision depending on context.
  optional int32 nanos = 2;
}

// ObjectMeta is metadata that all persisted resources must have, which includes all objects

    taskFaker.runTasks()
    // Note: we don't process server frames so our client 'close' doesn't receive a server 'close'.
    assertThat(client.canceled).isFalse()

    taskFaker.advanceUntil(ns(4_999))
    assertThat(client.canceled).isFalse()

    taskFaker.advanceUntil(ns(5_000))
    assertThat(client.canceled).isTrue()

    client.processNextFrame() // This won't get a frame, but it will get a closed pipe.

mapreduce.reduce.shuffle.input.buffer.percent=0.9 # Min % buffer in RAM
mapreduce.reduce.shuffle.merge.percent=0.9 # Minimum % merges in RAM
mapreduce.reduce.speculative=false # Disable speculation for reducing
mapreduce.task.io.sort.factor=999 # Threshold before writing to disk
mapreduce.task.sort.spill.percent=0.9 # Minimum % before spilling to disk
```

rgba(0, 0, 0, 0.2);\n  border-radius: 0.25rem;\n  background: #ffffff;\n  color: #495057;\n  margin-left: 60px;\n  margin-right: 15px;\n  margin-top: 0;\n  padding: 0;\n  position: relative;\n}\n\n.timeline > div > .timeline-item > .time {\n  color: #999;\n  float: right;\n  font-size: 12px;\n  padding: 10px;\n}\n\n.timeline > div > .timeline-item > .timeline-header {\n  border-bottom: 1px solid rgba(0, 0, 0, 0.125);\n  color: #495057;\n  font-size: 16px;\n  line-height: 1.1;\n  margin: 0;\n  padding:...