[FLINK-3635] Potential null deference in TwitterExample#SelectEnglishAndTokenizeFlatMap#flatMap

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.1.0
• Assignee: Unassigned
• Reporter: Ted Yu
• Created: 17/Mar/16 14:04
• Updated: 04/Apr/16 10:53
• Resolved: 04/Apr/16 10:53

Description

      JsonNode jsonNode = jsonParser.readValue(value, JsonNode.class);
      if (jsonNode.has("user") && jsonNode.get("user").get("lang").asText().equals("en")) {

jsonNode.get("user").get("lang") may return null, leading to NullPointerException.