Support partial write on PRW2.0 - #7761
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Implements partial write for Prometheus Remote Write 2.0 requests, following the Prometheus receiver behavior.
Previously a single invalid series aborted the whole conversion, so the entire batch was rejected with a
400and theX-Prometheus-Remote-Write-*-Writtenresponse headers were not set at all; now invalid series are skipped and reported together in the response, the valid ones are written, and the written stats headers are always set.This also makes Cortex accept a v2 write request that contains an exemplar-only series.
Which issue(s) this PR fixes:
Fixes #
Checklist
CHANGELOG.mdupdated - the order of entries should be[CHANGE],[FEATURE],[ENHANCEMENT],[BUGFIX]docs/configuration/v1-guarantees.mdupdated if this PR introduces experimental flags