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Hi team, I changed retention period to last 1 hour to get rid of data as I am running in dev . Logs are deleted as I cannot see in signoz UI, but the storage used is still the same. please help

From what I can recall the data deletion is not immediate but takes some time. Minimum of 4 hours for removal of old data irrespective of the TTL - but still not always guaranteed.

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I am facing issue when changing retention period

Updating TTL is a resource intensive operation. That behaviour is due to the limitations of ClickHouse.

Recommendations before you update TTL:
• temporarily stop ingestion - set otel-collector and otel-collector-metrics replicas to 0
• temporarily allot bigger machine configuration to clickhouse container/pod