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https://issues.apache.org/jira/browse/FLINK-3635?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15223934#comment-15223934
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ASF GitHub Bot commented on FLINK-3635:
---------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/1845
> 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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