[jira] [Created] (FLINK-3635) Potential null deference in TwitterExample#SelectEnglishAndTokenizeFlatMap#flatMap

[Shang Yuanchun (Jira)]

Ted Yu created FLINK-3635:
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             Summary: Potential null deference in TwitterExample#SelectEnglishAndTokenizeFlatMap#flatMap
                 Key: FLINK-3635
                 URL: https://issues.apache.org/jira/browse/FLINK-3635
             Project: Flink
          Issue Type: Bug
            Reporter: Ted Yu
            Priority: Minor


{code}
      JsonNode jsonNode = jsonParser.readValue(value, JsonNode.class);
      if (jsonNode.has("user") && jsonNode.get("user").get("lang").asText().equals("en")) {
{code}
jsonNode.get("user").get("lang") may return null, leading to NullPointerException.



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