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Posted to hdfs-issues@hadoop.apache.org by "Elek, Marton (JIRA)" <ji...@apache.org> on 2019/01/16 03:35:00 UTC
[jira] [Assigned] (HDDS-907) Use WAITFOR environment variable to
handle dependencies between ozone containers
[ https://issues.apache.org/jira/browse/HDDS-907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Elek, Marton reassigned HDDS-907:
---------------------------------
Assignee: Elek, Marton
> 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: Elek, Marton
> 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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