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Add a note about the memory issue in Prometheus receiver #9383

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Apr 20, 2022
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Add a note about the memory issue in Prometheus receiver #9383

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8 changes: 8 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -24,6 +24,14 @@

## v0.49.0

### ⚠️ Warning ⚠️

This release contains an issue in
[Prometheus receiver](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/receiver/prometheusreceiver)
causing 30% memory consumption increase when there is a lot of target churn. The issue is currently being
investigated and will be fixed in one of the new releases. More details:
https://github.com/open-telemetry/opentelemetry-collector-contrib/issues/9278.

### 🛑 Breaking changes 🛑

- `filelogreceiver`, `journaldreceiver`, `syslogreceiver`, `tcplogreceiver`, `udplogreceiver`:
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6 changes: 6 additions & 0 deletions receiver/prometheusreceiver/README.md
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Expand Up @@ -5,6 +5,12 @@ Receives metric data in [Prometheus](https://prometheus.io/) format. See the

Supported pipeline types: metrics

## ❗️ Important note

Starting from version 0.49.0, the receiver consumes 30% more memory when there is a lot of target churn.
The issue is currently being investigated and will be fixed in one of the new releases. More details:
https://github.com/open-telemetry/opentelemetry-collector-contrib/issues/9278.

## ⚠️ Warning

Note: This component is currently work in progress. It has several limitations
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