org.apache.flink.types.NullFieldException: Field 3 is null, but expected to hold a value.
at org.apache.flink.api.java.typeutils.runtime.TupleSerializer.serialize(TupleSerializer.java:127)
at org.apache.flink.api.java.typeutils.runtime.TupleSerializer.serialize(TupleSerializer.java:30)
at org.apache.flink.contrib.streaming.state.RocksDBKeySerializationUtils.writeKey(RocksDBKeySerializationUtils.java:108)
at org.apache.flink.contrib.streaming.state.AbstractRocksDBState.writeKeyWithGroupAndNamespace(AbstractRocksDBState.java:217)
at org.apache.flink.contrib.streaming.state.AbstractRocksDBState.writeKeyWithGroupAndNamespace(AbstractRocksDBState.java:192)
at org.apache.flink.contrib.streaming.state.AbstractRocksDBState.writeCurrentKeyWithGroupAndNamespace(AbstractRocksDBState.java:179)
at org.apache.flink.contrib.streaming.state.AbstractRocksDBState.getKeyBytes(AbstractRocksDBState.java:161)
at org.apache.flink.contrib.streaming.state.RocksDBReducingState.add(RocksDBReducingState.java:96)
at org.apache.flink.runtime.state.ttl.TtlReducingState.add(TtlReducingState.java:52)
at com.yjp.stream.stat.business.crm.function.ReturnOrderFlatMapFunction.flatMap(ReturnOrderFlatMapFunction.java:101)
at com.yjp.stream.stat.business.crm.function.ReturnOrderFlatMapFunction.flatMap(ReturnOrderFlatMapFunction.java:24)
at org.apache.flink.streaming.api.operators.StreamFlatMap.processElement(StreamFlatMap.java:50)
at org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:202)
at org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:105)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:300)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:711)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
