Prep for v0.30.2 #2723
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Prep for v0.30.2 #2723
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This commit clones the label set before applying relabels. Not cloning does two things: 1. It forces the computed ID of the incoming series to change (as its labels changed) 2. It can cause obscure bugs with relabel rules being applied, such as a `keep` action which doesn't work after modifying the original slice.
…grafana#2721) Fix an issue where being unable to send logs to `loki.write` due to the client being permanently backlogged would deadlock the Flow controller. The `loki.write` client may be permanently backlogged when: * Limits are reached when sending logs to Loki, leading to endless request retries. * Loki has an extended outage. When an EntryHandler is stopped, it will wait for 5 seconds before forcibly stopping the goroutine which queues log entries. If this timeout is reached, any unqueued log entries are permanently lost, as the positions file will likely be updated past the point where the entry was read. While losing logs is not ideal, it's unacceptable for any Flow component to be able to block the controller. This is a short-term solution to allow the Flow controller to continue working properly. A long term solution would be to use a Write-Ahead Log (WAL) for log entries. See grafana/loki#7993. Fixes grafana#2716. Related to grafana/loki#2361.
rfratto
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karengermond,
captncraig and
marctc
as code owners
…afana#2724) Signed-off-by: Paschalis Tsilias <paschalis.tsilias@grafana.com>
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