@Test void doesntIndexSpansMissingTimestamp(TestInfo testInfo) throws Exception {
    String testSuffix = testSuffix(testInfo);
    accept(spanBuilder(testSuffix).timestamp(0L).duration(0L).build());

    assertThat(rowCountForTraceByServiceSpan(storage)).isZero();
  }
{@link Span#timestamp()} == 0 is likely to be a mistake, and coerces to null. It is not helpful
to index rows who have no timestamp.
zipkin-storage/cassandra/src/test/java/zipkin2/storage/cassandra/ITSpanConsumer.java