Realtime Compute for Apache Flink provides the version management feature for you to manage Blink versions of a Realtime Compute for Apache Flink cluster in exclusive mode.
Install a version
Switch a version
Blink features vary based on Blink versions. You can configure a Blink version based on your business requirements. You can switch the Blink version for a job.
- Log on to the Realtime Compute development platform.
- In the top navigation bar, click Development.
- On the Development page, double-click the job in a folder that stores the job to go to the job editing page.
- In the right side of the job editing page, click Version Information.
- From the version list, select the Blink version you want to switch to.
Uninstall a Blink version
Realtime Compute for Apache Flink allows you to install only three Blink versions. If you already install three Blink versions and need to install a new version, you must uninstall an existing version.
Specify the current version
You can select an installed Blink version and set the version to the current version of a job in the current cluster. Blink features vary based on Blink versions. You can set a Blink version to the current version of a Realtime Compute for Apache Flink cluster based on your business requirements.
- Go to the Version Management page
- Log on to the Realtime Compute development platform.
- Move the pointer over the username in the top navigation bar and click Project Management.
- In the left-side navigation pane, choose .
- On the Clusters page, find the cluster for which you want to set a version to the current version. In the Actions column, and choose .
- On the Installed Version page, find the version that you want to set to the current version, and click Set to current in the Actions column.
FAQ
- What can I do if the
blink-<version> already installed
error message appears during installation?The error message is returned because the Blink version has been installed. You do not need to install the version again.
- What can I do if the
Flink versions exceeded max limitation:3
error message appears during installation?The error message is returned because the number of versions exceeds the upper limit. To install a new version, you must delete existing versions until the number of installed versions is less than three.
- What can I do if the
Node:<nodeName> in project:<projectName> still ref the version:<blinkVersion>
error message appears during uninstallation?The error message is returned because the Blink version is referenced by an online job. You must bring the job offline based on the job name and project name provided in the error message.
- What can I do if the following message appears when I click Syntax Check or Publish?
code:[30006], brief info:[blink script not exist, please check blink version], context info:[blink script:[/home/admin/blink/blink-2.2.6-hotfix0/bin/flink], blink version:[/home/admin/blink/blink-2.2.6-hotfix0/bin/flink]]
The error message is returned because the Blink version used by the job does not exist. In the Realtime Compute for Apache Flink console, chooseto check whether the version exists.- If the version does not exist, switch to another version or install the version.
- If the version exists, submit a ticket.