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v6.1.11

Fixed INSERT INTO hanging bug.

This release contains bug fixes to Hydrolix v6.1. Refer to the release notes to see other notable feature announcements and information for this version.

Upgrade instructions⚓︎

Install the latest Hydrolix v6.1 patch release.

Don't skip minor versions when upgrading or downgrading

Skipping versions when upgrading or downgrading Hydrolix can result in database schema inconsistencies and cluster instability. Always upgrade or downgrade sequentially through each minor version, moving to every intermediate minor release in turn rather than jumping directly from the starting version to the target.

Point releases are safe to skip. Upgrade through each minor version, using the latest point release of each one. Don't install every point release along the way.

For example, to go from v5.10 to v6.1, upgrade sequentially to v5.11.10 -> v6.0.19 -> v6.1.10. Downgrading works the same way, in reverse.

Step 1: Set tunable⚓︎

Set the tunable turbine_api_feature_migrate_projects_to_orgs to true if you want each of the projects in the cluster to be elevated to its own organization, or skip this step and accept the default.

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spec:
  turbine_api_feature_migrate_projects_to_orgs: false

Default behavior: For a single-tenant cluster, after upgrading to v6.1, three Customer objects are created. One Customer object each is created for the projects hydro and sample_project. All other projects are associated with a third Customer object.

This is an example of explicit declaration of the default setting.

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spec:
  turbine_api_feature_migrate_projects_to_orgs: true

Set this for [multi-tenant clusters][multi-tenant clusters]. This tunable must be explicitly set in the Hydrolix cluster spec before upgrading to v6.1.

A distinct Customer object is created for every existing project.

The tunable setting controls a background job that creates the [parallel hierarchy][parallel hierarchy] and runs for the lifetime of Hydrolix v6.1.

Step 2: Apply the new Hydrolix operator⚓︎

If you have a self-managed installation, apply the new operator directly with the kubectl command examples. If you're using Hydrolix-supplied tools to manage your installation, follow the procedure prescribed by those tools.

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VERSION=v6.1.14
BASEURL="https://www.hydrolix.io/operator/${VERSION}/operator-resources"

kubectl apply -f "${BASEURL}?namespace=${HDX_KUBERNETES_NAMESPACE}&gcp-storage-sa=${GCP_STORAGE_SA}"

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VERSION=v6.1.14
BASEURL="https://www.hydrolix.io/operator/${VERSION}/operator-resources"

kubectl apply -f "${BASEURL}?namespace=${HDX_KUBERNETES_NAMESPACE}&aws-storage-role=${AWS_STORAGE_ROLE}"

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VERSION=v6.1.14
BASEURL="https://www.hydrolix.io/operator/${VERSION}/operator-resources"

kubectl apply -f "${BASEURL}?namespace=${HDX_KUBERNETES_NAMESPACE}"

Step 3: Monitor the upgrade process⚓︎

Kubernetes jobs named init-cluster and init-turbine-api will automatically run to upgrade your entire installation to match the new operator's version number. This will take a few minutes, during which time you can observe your pods' restarts with your Kubernetes monitor tool.

Ensure both the init-cluster and init-turbine-api jobs have completed successfully and that the turbine-api pod has restarted without errors. After that, view the UI and use the API of your new installation as a final check.

If the turbine-api pod doesn't restart successfully, or other functionality is missing, check the logs of the init-cluster and init-turbine-api jobs for details about failures. This can be done using the k9s utility or with the kubectl command:

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% kubectl logs -l app=init-cluster
% kubectl logs -l app=init-turbine-api

If you still need help, contact Hydrolix support.

Post-upgrade instructions⚓︎

This one-time post-upgrade step removes the orphaned objects, if they still exist.

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kubectl delete clusterrolebinding "reloader-${HDX_KUBERNETES_NAMESPACE}"
kubectl delete clusterrole "reloader-${HDX_KUBERNETES_NAMESPACE}"

The operator reconciliation logic can't delete the role and binding which become unnecessary after upgrade to v6.1.12 or later.

Downgrade instructions⚓︎

Use these instructions when downgrading from v6.1 to v6.0.

  1. Connect to the Kubernetes cluster using k9s and select the namespace holding the Hydrolix cluster.
  2. Select the turbine-api pod and turbine-api container.
  3. Invoke a shell by pressing s

  4. Execute each of the following commands, which will produce STDERR to terminal. Each must exit cleanly.

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    ./manage.py release_6_0

  5. Exit the k9s utility by pressing Ctrl+c.

  6. Follow the upgrade instructions for the latest Hydrolix v6.0 release.

Changelog⚓︎

Bug fixes⚓︎

Core fixes⚓︎

  • Fixed an INSERT INTO that could hang without bound and lose data. Catalog writes now have a default statement timeout, and the catalog connection has a default TCP user timeout that detects a dead pooled connection. These tunables change those bounds and the thresholds for slow-write warnings:

    • catalog_write_timeout_ms (default 30000)
    • catalog_tcp_user_timeout_ms (default 60000)
    • catalog_slow_write_warn_ms (default 5000)
    • storage_slow_finalize_warn_ms (default 5000)

    A slow write logs slow catalog insert or slow partition finalize to hydro.logs at WARN level.