liudezhi2098 opened a new pull request #6390: fix duplicate key to send propertys URL: https://github.com/apache/pulsar/pull/6390 **Motivation** Fix when sending a message, set duplicate key to properties, can't pull the message while concumer #6388 ```javascript //org.apache.pulsar.client.impl.MessageImpl if (msgMetadata.getPropertiesCount() > 0) { this.properties = Collections.unmodifiableMap(msgMetadataBuilder.getPropertiesList().stream() .collect(Collectors.toMap(KeyValue::getKey, KeyValue::getValue))); } else { properties = Collections.emptyMap(); } this.schema = schema; ``` Collectors.toMap can not allowed duplicate key **Changes** Replace old value with new value ```javascript if (msgMetadata.getPropertiesCount() > 0) { this.properties = Collections.unmodifiableMap(msgMetadataBuilder.getPropertiesList().stream() .collect(Collectors.toMap(KeyValue::getKey, KeyValue::getValue, (oldValue,newValue) -> newValue))); } else { properties = Collections.emptyMap(); } this.schema = schema; ```
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