InfluxDB 2.x: Error: Unsupported input type for mean aggregate (string to integer)
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Version vom 1. März 2021, 14:52 Uhr von Admin (Diskussion | Beiträge)
My InfluxDB 2.x downsampling tasks could not run because of following error.
Error
Could not execute task run; Err: unsupported input type for mean aggregate: string: unsupported input type for mean aggregate: string
Unsupported input type for mean aggregate: string
Cause
This error occurs because of type conflicts in the same fields respectively in the value of it.
Solution / Workaround
Unfortunately InfluxDB 2.x has no solution for this (or I don't know about them).
That's why we have to convert the type of the "_value" fields and rewrite this in a new measurement.
- Optionally: Create a new bucket (I called them "typeconversion")
- Write a query that selects your measurement, convert the values to integer and rewrite the data to your new bucket:
datatoconvert = from(bucket: "telegraf") |> range(start: v.timeRangeStart, stop: v.timeRangeStop) |> filter(fn: (r) => r._measurement == "asset_vm_cmdb") |> toInt() datatoconvert |> filter(fn: (r) => exists r._value) |> to(bucket: "typeconversion", org: "Inventx AG")
- Remove the old measurement