@Test protected void readsBackLargeValues(TestInfo testInfo) throws Exception {
    String testSuffix = testSuffix(testInfo);
    char[] kilobyteOfText = new char[1024];
    Arrays.fill(kilobyteOfText, 'a');

    // Make a span that's over 1KiB in size
    Span span = spanBuilder(testSuffix).name("big").putTag("a", new String(kilobyteOfText)).build();

    accept(span);

    // read back to ensure the data wasn't truncated
    assertGetTracesReturns(requestBuilder().build(), List.of(span));
    assertGetTraceReturns(span);
  }
While large spans are discouraged, and maybe not indexed, we should be able to read them back.
zipkin-tests/src/main/java/zipkin2/storage/ITSpanStore.java