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<doc>: information about max_look_back_period #1474

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Jan 8, 2020
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<doc>: information about max_look_back_period #1474

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<doc>: information about max_look_back_period
eraac Jan 7, 2020
f9dbd65
update example
eraac Jan 7, 2020
435e370
added a note to retention doc and fixed a spell error
sandeepsukhani Jan 8, 2020
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4 changes: 3 additions & 1 deletion docs/configuration/README.md
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Expand Up @@ -643,7 +643,9 @@ to wait before saving them to the backing store.
# disabled.
[cache_lookups_older_than: <duration>]

# Limit how long back data can be queries. Default is disabled.
# Limit how long back data can be queried. Default is disabled.
# This should always be set to a value less than or equal to
# what is set in `table_manager.retention_period`.
[max_look_back_period: <duration>]
```

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7 changes: 7 additions & 0 deletions docs/operations/storage/retention.md
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Expand Up @@ -15,6 +15,10 @@ can be parsed using Go's [time.Duration](https://golang.org/pkg/time/#ParseDurat
block. See the [Table Manager](./table-manager.md#retention) documentation for
more information.

> **NOTE**: To avoid querying of data beyond the retention period,
`max_look_back_period` config in [`chunk_store_config`](../../configuration/README.md#chunk_store_config) must be set to a value less than or equal to
what is set in `table_manager.retention_period`.

When using S3 or GCS, the bucket storing the chunks needs to have the expiry
policy set correctly. For more details check
[S3's documentation](https://docs.aws.amazon.com/AmazonS3/latest/dev/object-lifecycle-mgmt.html)
Expand Down Expand Up @@ -57,6 +61,9 @@ storage_config:
gcs:
bucket_name: GCS_BUCKET_NAME

chunk_store_config:
max_look_back_period: 720h

table_manager:
retention_deletes_enabled: true
retention_period: 720h
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