从 avro 模式创建配置单元 table 时出错

Question

我正在尝试通过从存储在 s3 中的 Avro 数据中提取架构来创建配置单元 table。数据使用 s3 Kafka 连接器存储在 s3 中。我正在向生产者发布一个简单的 POJO。

从 Avro 数据中提取模式的代码：-

for filename in os.listdir(temp_folder_path):
    filename = temp_folder_path + filename
        if filename.endswith('avro'):
            os.system(
                'java -jar /path/to/avro-jar/avro-tools-1.8.2.jar getschema {0} > {1}'.format(
                filename, filename.replace('avro', 'avsc')))

然后将提取的架构保存在 s3 存储桶中。

创建table查询：-

CREATE EXTERNAL TABLE IF NOT EXISTS `db_name_service.table_name_change_log` PARTITIONED BY (`year` bigint,
 `month` bigint, `day` bigint, `hour` bigint) ROW FORMAT SERDE 
 'org.apache.hadoop.hive.serde2.avro.AvroSerDe' STORED AS INPUTFORMAT 
 'org.apache.hadoop.hive.ql.io.avro.AvroContainerInputFormat' OUTPUTFORMAT 
 'org.apache.hadoop.hive.ql.io.avro.AvroContainerOutputFormat' LOCATION 's3://bucket/topics/topic_name' 
 TBLPROPERTIES ( 'avro.schema.url'='s3://bucket/schemas/topic_name.avsc')

错误：-

FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. java.lang.RuntimeException: MetaException(message:org.apache.hadoop.hive.serde2.avro.AvroSerdeException Schema for table must be of type RECORD. Received type: BYTES)

架构：-

{ "type": "record", "name": "Employee", "doc" : "Represents an Employee at a company", "fields": [ {"name": 
"firstName", "type": "string", "doc": "The persons given name"}, {"name": "nickName", "type": ["null",
 "string"], "default" : null}, {"name": "lastName", "type": "string"}, {"name": "age", "type": "int",
  "default": -1}, {"name": "phoneNumber", "type": "string"} ] }

我可以使用此命令查看主题中的数据./confluent-4.1.1/bin/kafka-avro-console-consumer --topic test2_singular --bootstrap-server localhost:9092 --from-beginning

{"firstName":"A:0","nickName":{"string":"C"},"lastName":"C","age":0,"phoneNumber":"123"}

{"firstName":"A:1","nickName":{"string":"C"},"lastName":"C","age":1,"phoneNumber":"123"}

Answer 1

Schema for table must be of type RECORD. Received type: BYTES

如果您没有将 AvroConverter 用于 Connect 接收器配置，则可能发生这种情况的唯一方法。

您还需要从 S3 文件中提取架构。

提示：使用 Lambda 函数监视存储桶中的 avro 文件创建可以帮助获取模式而无需扫描整个存储桶或随机文件并且用于通知 Hive/AWS 胶水 table 模式更新

从 avro 模式创建配置单元 table 时出错

Error creating hive table from avro schema

amazon-s3

hive

avro

apache-kafka-connect

confluent-platform