Question

我想使用Stream Analytics将数据从IoT中心传输到Cosmos数据库和存储表。存储表正常。但是，我的流分析在活动日志中给我以下数据转换错误：

“输出记录不包含要用作分区键属性的列'deviceId'（区分大小写）。默认情况下，Azure Stream Analytics将无限期地重试写入事件，直到写入成功。请考虑选择“丢弃输出错误策略”跳过此类错误，因此错误不会阻止作业进度。在写入[0]批处理后遇到的错误。”

deviceId是我的cosmos数据库中的分区键。我可以看到数据正在正确地纳入流分析中。这是输入示例：

[{"deviceId":1,"dateStamp":"2019-03-27T18:55:43.3546682Z","temperature":6.510664596692969,"EventProcessedUtcTime":"2019-03-27T18:58:41.6172586Z","PartitionId":1,"EventEnqueuedUtcTime":"2019-03-27T18:55:43.3450000Z","IoTHub":{"MessageId":null,"CorrelationId":null,"ConnectionDeviceId":"Simulator","ConnectionDeviceGenerationId":"636891216524279053","EnqueuedTime":"2019-03-27T18:55:43.3370000Z","StreamId":null}},
{"deviceId":1,"dateStamp":"2019-03-27T18:56:43.3809346Z","temperature":5.5680961758215428,"EventProcessedUtcTime":"2019-03-27T18:58:41.6172586Z","PartitionId":1,"EventEnqueuedUtcTime":"2019-03-27T18:56:43.3640000Z","IoTHub":{"MessageId":null,"CorrelationId":null,"ConnectionDeviceId":"Simulator","ConnectionDeviceGenerationId":"636891216524279053","EnqueuedTime":"2019-03-27T18:56:43.3690000Z","StreamId":null}},
{"deviceId":1,"dateStamp":"2019-03-27T18:57:43.4122929Z","temperature":5.07182001605249,"EventProcessedUtcTime":"2019-03-27T18:58:41.6172586Z","PartitionId":1,"EventEnqueuedUtcTime":"2019-03-27T18:57:43.4050000Z","IoTHub":{"MessageId":null,"CorrelationId":null,"ConnectionDeviceId":"Simulator","ConnectionDeviceGenerationId":"636891216524279053","EnqueuedTime":"2019-03-27T18:57:43.4010000Z","StreamId":null}}]

以下是我的SQL API查询，ColdStorageSmartFridge是存储表，HotStorageSmartFridge是cosmosdb：

SELECT
    deviceId,
    dateStamp as time,
    temperature
INTO
    [ColdStorageSmartFridge]
FROM
    [IoTHubSmartFridge]

SELECT 
    deviceId,
    dateStamp,
    temperature    
INTO
    [HotStorageSmartFridge]
FROM
    [IoTHubSmartFridge]

我已经为此工作了整个下午，但无法正常工作。我想念什么？

Answer 1

似乎您的分区键可能区分大小写。以前，Azure Stream Analytics对不同的字段进行小写。尽管这不是预期的行为，但我们不想在服务中引入重大更改，因此已在“ compatibility level 1.1”下发布了此修复程序。

您能否尝试将作业兼容性级别更改为1.1，并让我知道它是否可以解决您的问题。

我们将在不久的将来更改默认的兼容级别。

使用Stream Analytics将数据从IoT中心传输到Cosmos DB会产生分区错误

1 个答案: