jiazhai opened a new pull request #3034: Issue #2751: Add check to fix NPE URL: https://github.com/apache/pulsar/pull/3034 ### Motivation We may meet NPE like this: ``` java.lang.NullPointerException: null at org.apache.pulsar.common.api.proto.PulsarApi$KeyValue$Builder.setValue(PulsarApi.java:1923) ~[org.apache.pulsar-pulsar-common-2.1.1-incubating.jar:2.1.1-incubating] ``` This is related to protobuf, it does not support null-able field directly. protocolbuffers/protobuf#1606 In this fix we try to avoid this by add checking before this method is called.
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