@Override
    public String toString() {
        return "RemotePartitionDeleteMetadata{" +
               "topicPartition=" + topicIdPartition +
               ", state=" + state +
               ", eventTimestampMs=" + eventTimestampMs() +
               ", brokerId=" + brokerId() +
               '}';
    }
It represents the state of the remote partition. It can be one of the values of {@link RemotePartitionDeleteState}.
storage/api/src/main/java/org/apache/kafka/server/log/remote/storage/RemotePartitionDeleteMetadata.java