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https://issues.apache.org/jira/browse/HDDS-907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HDDS-907 stopped by Doroszlai, Attila.
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> Use WAITFOR environment variable to handle dependencies between ozone
> containers
> --------------------------------------------------------------------------------
>
> Key: HDDS-907
> URL: https://issues.apache.org/jira/browse/HDDS-907
> Project: Hadoop Distributed Data Store
> Issue Type: Improvement
> Components: docker
> Reporter: Elek, Marton
> Assignee: Doroszlai, Attila
> Priority: Major
> Labels: newbie
>
> Until HDDS-839 we had a hard-coded 15 seconds sleep before we started
> ozoneManager with the docker-compose files
> (hadoop-ozone/dist/target/ozone-0.4.0-SNAPSHOT/compose).
> For initialization of the OzoneManager we need the scm. Om will retry the
> connection if scm is not available but the dns resolution is cached: if the
> dns of scm is not available at the startup of om, it can't be initialized.
> Before HDDS-839 we handled this dependency with the 15 seconds sleep, which
> was usually slower what we need.
> Now we can use the WAITFOR environment variables from HDDS-839 to handle this
> dependency (like WAITFOR:scmL9876) which can be added to all the
> docker-compose files.
>
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