lamber-ken opened a new pull request #7987: SimpleStringSchema handle message record which value is null URL: https://github.com/apache/flink/pull/7987 ## What is the purpose of the change when kafka msg queue contains some records which value is null, flink-kafka-connector can't process these records. for example, msg queue like bellow. <table class="table table-bordered table-striped table-condensed"> <tr> <td>msg</td> <td>null</td> <td>msg</td> <td>msg</td> <td>msg</td> </tr> </table> for normal, use **SimpleStringSchema** to process msg queue data ``` env.addSource(new FlinkKafkaConsumer010("topic", new SimpleStringSchema(), properties)); ``` but, will get NullPointerException ``` java.lang.NullPointerException at java.lang.String.<init>(String.java:515) at org.apache.flink.api.common.serialization.SimpleStringSchema.deserialize(SimpleStringSchema.java:75) at org.apache.flink.api.common.serialization.SimpleStringSchema.deserialize(SimpleStringSchema.java:36) ```
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