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apache-kafka - Druid Kafka 摄取的配置

问题描述

我想设置 kafka druid 摄取，但即使在 common.runtime.properties 中配置并添加 druid-kafka 索引服务后，它仍然给我错误。这个你能帮我吗。我的数据是 csv 格式。

{
"type": "kafka",
"spec": {
    "dataSchema": {
        "dataSource": "london_crime_by_lsoa",
        "parser": {
            "type": "string",
            "parseSpec": {
                "format": "csv",
                "dimensionsSpec": {
                    "dimensions": [
                        "lsoa_code",
                        "borough",
                        "major_category",
                        "minor_category",
                        {
                            "name": "value",
                            "type": "long"
                        },
                        {
                            "name": "year",
                            "type": "long"
                        },
                        {
                            "name": "month",
                            "type": "long"
                        }
                    ]
                },
                "timestampSpec": {
                    "column": "year",
                    "format": "auto"
                },
                "columns": [
                    "lsoa_code",
                    "borough",
                    "major_category",
                    "minor_category",
                    "value",
                    "year",
                    "month"
                ]
            }
        },
        "metricsSpec": [],
        "granularitySpec": {
            "type": "uniform",
            "segmentGranularity": "year",
            "queryGranularity": "NONE",
            "rollup": false
        }
    },
    "ioConfig": {
        "topic": "london_crime_by_lsoa",
        "taskDuration": "PT10M",
        "useEarliestOffset": "true",
        "consumerProperties": {
            "bootstrap.servers": "localhost:9092"
        }
    },
    "tuningConfig": {
        "type": "kafka",
        "maxRowsPerSegment": 500000
    }
}

}

执行此命令后：

   curl -XPOST -H'Content-Type: application/json' -d @quickstart/tutorial/crime_supervisor.json http://localhost:8090/druid/indexer/v1/supervisor

我收到此错误：

{"error":"Instantiation of [simple type, class org.apache.druid.indexing.kafka.supervisor.KafkaSupervisorSpec] value failed: dataSchema"}

标签： apache-kafkadruid

解决方案

我认为您在 JSON 中指定规范的方式存在问题。您必须dataSchema直接在 JSON 中指定，而不是作为spec.

这是您应该遵循的格式：

{
   "type": "kafka",
   "dataSchema": {},
   "tuningConfig": {},
   "ioConfig": {}
}

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