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Fix Receiver panic when querying uninitialized TSDBs #6067

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merged 3 commits into from
Jan 24, 2023

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@fpetkovski fpetkovski commented Jan 24, 2023

Receivers currently panic when retrieving labels for a TSDB that is being initialized. The reason for this is that the tenant is added to the tenants map and the TSDB is started in the background. When retrieving labels, the MultiTSDB creates Clients for each TSDB, even if a TSDB is not yet ready.

Adding a tenant to the tenants map: https://github.com/thanos-io/thanos/blob/main/pkg/receive/multitsdb.go#L562
Setting the underlying TSDB: https://github.com/thanos-io/thanos/blob/main/pkg/receive/multitsdb.go#L533
Retrieving the TSDB: https://github.com/thanos-io/thanos/blob/main/pkg/receive/multitsdb.go#L166

Fixes #6047

Signed-off-by: Filip Petkovski filip.petkovsky@gmail.com

  • I added CHANGELOG entry for this change.
  • Change is not relevant to the end user.

Changes

Verification

Receivers currently panic when retrieving labels for a TSDB that is
being initialized. The reason for this is that the tenant is added to
the tenants map and the TSDB is started in the background.
When retrieving labels, the MultiTSDB creates Clients for each TSDB,
even if a TSDB is not yet ready.

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>
Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>
saswatamcode
saswatamcode previously approved these changes Jan 24, 2023
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LGTM! Thanks for fixing!

@GiedriusS
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Not sure but CI failure might be related? 👁️

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>
@GiedriusS GiedriusS merged commit b58aeda into thanos-io:main Jan 24, 2023
rabenhorst pushed a commit to rabenhorst/thanos that referenced this pull request Jan 24, 2023
* Fix Receiver panic when querying uninitialized TSDBs

Receivers currently panic when retrieving labels for a TSDB that is
being initialized. The reason for this is that the tenant is added to
the tenants map and the TSDB is started in the background.
When retrieving labels, the MultiTSDB creates Clients for each TSDB,
even if a TSDB is not yet ready.

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>

* Add CHANGELOG

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>

* Gracefully terminate test

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>
Signed-off-by: Sebastian Rabenhorst <sebastian.rabenhorst@shopify.com>
sshantel pushed a commit to sshantel/thanos that referenced this pull request Jan 28, 2023
* Fix Receiver panic when querying uninitialized TSDBs

Receivers currently panic when retrieving labels for a TSDB that is
being initialized. The reason for this is that the tenant is added to
the tenants map and the TSDB is started in the background.
When retrieving labels, the MultiTSDB creates Clients for each TSDB,
even if a TSDB is not yet ready.

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>

* Add CHANGELOG

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>

* Gracefully terminate test

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>
ngraham20 pushed a commit to ngraham20/thanos that referenced this pull request Apr 17, 2023
* Fix Receiver panic when querying uninitialized TSDBs

Receivers currently panic when retrieving labels for a TSDB that is
being initialized. The reason for this is that the tenant is added to
the tenants map and the TSDB is started in the background.
When retrieving labels, the MultiTSDB creates Clients for each TSDB,
even if a TSDB is not yet ready.

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>

* Add CHANGELOG

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>

* Gracefully terminate test

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>
ngraham20 pushed a commit to ngraham20/thanos that referenced this pull request Apr 17, 2023
* Fix Receiver panic when querying uninitialized TSDBs

Receivers currently panic when retrieving labels for a TSDB that is
being initialized. The reason for this is that the tenant is added to
the tenants map and the TSDB is started in the background.
When retrieving labels, the MultiTSDB creates Clients for each TSDB,
even if a TSDB is not yet ready.

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>

* Add CHANGELOG

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>

* Gracefully terminate test

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>
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Thanos component of receive got recovered from panic.
3 participants