What is the max length of a field with type String and a tag value?

Store
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1

From the documentation I see the limit is 64k for all types of strings – InfluxDB line protocol reference | InfluxDB OSS 1.7 Documentation

I have the same String as a tag value and as a field value. What I observe is the write to tag fails with below message
“max key length exceeded: 715919 > 65535”
whereas the filed doesn’t get written to the DB neither throws any error.

I want to know if there is an alternative way to store large strings and still be indexed as a tag and searchable as field.

2

Split it into multiple tags?
But keep in mind that you may end up with ridiculously high cardinality in that case.
Or store it as a field which has no length limits (apparently)

3

But as per my observation the value doesn’t get written to the fields at all. The data is lost, though the point itself is not completely lost.