Azure Application Insights是否具有最大日志长度？

Question

我有一个Azure函数（Python）绑定到AppInsights实例。该函数从Azure存储中下载大blob进行处理。作为加载到内存的一部分，BlobClient对blob容器进行多次调用

一个约2GB的文件会导致App Insights日志被截断（日志中的最后一条消息应该是### File Successfully Processed ###）：

Kusto查询是：

union traces
| union exceptions
| where timestamp > ago(30d)
| where operation_Id == 'bigGUID'
| where customDimensions['InvocationId'] == 'bigGUID2'
| order by timestamp asc
| project timestamp, message = iff(message != '', message, iff(innermostMessage != '', innermostMessage, customDimensions.['prop__{OriginalFormat}'])), logLevel = customDimensions.['LogLevel']

单个事件的App Insights日志长度是否有限制？

Answer 1

是的，有一个最大长度。 请在这里找到答案：

Azure Application Insight. Custom attribute length restriction

The message has the highest allowed limit of 32768. For items in the property collection ,value has max limit of 8192.
Reference: https://github.com/microsoft/ApplicationInsights-Home/blob/master/EndpointSpecs/Schemas/Bond/MessageData.bond