@Test
  public void metadataChunkUpdatedLastTest() throws Exception {
    // configure failure for the metadata chunk
    serverLayout.getMockServers()
        .forEach(mockServer -> mockServer.setErrorCodeForBlob(blobIds.get(0), ServerErrorCode.UnknownError));
    executeOpAndVerifyWithInfinity(blobIds, RouterErrorCode.UnexpectedInternalError, false, false, false,
        blobIds.subList(1, blobIds.size()));
  }
Test to ensure that the metadata chunk gets updated last.
@throws Exception
ambry-router/src/test/java/com/github/ambry/router/TtlUpdateManagerTest.java