Java Script error for certain JSON response

[calr]

I'm running into an issue that the Jaeger UI cannot correctly render JSON response after clicking the search button.
The JavaScript error shown is

Uncaught (in promise) TypeError: Cannot read property 'some' of undefined
at http://localhost:16686/static/js/main.aa943a40.js:30:7371
at Array.reduce (native)
at o (http://localhost:16686/static/js/main.aa943a40.js:30:7320)
at http://localhost:16686/static/js/main.aa943a40.js:9:1558
at http://localhost:16686/static/js/main.aa943a40.js:9:994
at f (http://localhost:16686/static/js/main.aa943a40.js:9:1763)
at http://localhost:16686/static/js/main.aa943a40.js:30:7620
at Array.map (native)
at a (http://localhost:16686/static/js/main.aa943a40.js:30:7598)
at http://localhost:16686/static/js/main.aa943a40.js:30:8485

and the JSON response is

{
  "data": [
    {
      "traceID": "2baaf5bc8940d5f2",
      "spans": [
        {
          "traceID": "2baaf5bc8940d5f2",
          "spanID": "2baaf5bc8940d5f2",
          "flags": 1,
          "operationName": "oldSpan",
          "startTime": 1498145353371000,
          "duration": 12562,
          "tags": [
            {
              "key": "sampler.type",
              "type": "string",
              "value": "const"
            },
            {
              "key": "sampler.param",
              "type": "bool",
              "value": true
            }
          ],
          "processID": "p1"
        },
        {
          "traceID": "2baaf5bc8940d5f2",
          "spanID": "c718ee0eed62b453",
          "flags": 1,
          "operationName": "newSpan",
          "references": [
            {
              "refType": "CHILD_OF",
              "traceID": "2baaf5bc8940d5f2",
              "spanID": "2baaf5bc8940d5f2"
            }
          ],
          "startTime": 1498145353373000,
          "duration": 7048,
          "processID": "p2"
        }
      ],
      "processes": {
        "p1": {
          "serviceName": "App2",
          "tags": [
            {
              "key": "jaeger.hostname",
              "type": "string",
              "value": "HOST"
            },
            {
              "key": "jaeger.version",
              "type": "string",
              "value": "Java-0.19.0"
            }
          ]
        },
        "p2": {
          "serviceName": "App1",
          "tags": [
            {
              "key": "jaeger.hostname",
              "type": "string",
              "value": "HOST"
            },
            {
              "key": "jaeger.version",
              "type": "string",
              "value": "Java-0.19.0"
            }
          ]
        }
      }
    }
  ],
  "total": 0,
  "limit": 0,
  "offset": 0,
  "errors": null
}

When there's only a span under a tracer, no error prompts out. I look through the code, it seems that tags was undefined at the time.

const numberOfErredSpans = trace.spans.reduce(
    (total, { tags }) => total + Number(tags.some(isErredTag)),
    0
  );

Is that because of the problem of the JSON format or it may be a potential bug for the UI?

PS. Configuration setting:

Configuration(
        tracerName,
        new Configuration.SamplerConfiguration("const", 1),
        new Configuration.ReporterConfiguration(
          true, "localhost", null, 1000, 10000)
      )

Thanks!

[calr]

Problem solved by attaching a tag on the span. It seems like the JS code expects all spans to have at least a tag.

[yurishkuro]

Are you using the recent version of Jaeger backend? This issue came up before (https://github.com/uber/jaeger-ui/issues/33) and there was a backend fix (https://github.com/uber/jaeger/pull/195) to ensure that tags are always returned as empty arrays

[calr]

I'm using version 0.19.0 as the Java binding client and the latest all-in-one docker image.

[yurishkuro]

Can you check the tags on the current image you're using? Sometimes Docker might keep the old version.