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https://issues.apache.org/jira/browse/HDDS-12378?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HDDS-12378:
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Labels: pull-request-available (was: )
> Changing the default value of hdds.scm.safemode.min.datanode to 3
> ------------------------------------------------------------------
>
> Key: HDDS-12378
> URL: https://issues.apache.org/jira/browse/HDDS-12378
> Project: Apache Ozone
> Issue Type: Improvement
> Reporter: Nandakumar
> Assignee: Anastasia Kostryukova
> Priority: Major
> Labels: pull-request-available
>
> Currently, the default value of {{hdds.scm.safemode.min.datanode}} is set to
> {{{}1{}}}.
> This means that an user can deploy an Ozone cluster (with default
> configuration) with just one datanode and the cluster will come out of
> {{{}safemode{}}}. After coming out of {{safemode}} the writes with three way
> replication will fail.
> By changing the default value of {{hdds.scm.safemode.min.datanode}} from
> {{1}} to {{{}3{}}}, we will make sure that the cluster deployed with default
> configuration will not fail during write once it's out of {{{}safemode{}}}.
> The users who wants to run Ozone with just one datanode can manually update
> the config.
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