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https://issues.apache.org/jira/browse/HDDS-5526?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jackson Yao reassigned HDDS-5526:
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Assignee: (was: Jackson Yao)
> ContainerBalancer#checkConditionsForBalancing can use container size for
> checking iteration limits.
> ---------------------------------------------------------------------------------------------------
>
> Key: HDDS-5526
> URL: https://issues.apache.org/jira/browse/HDDS-5526
> Project: Apache Ozone
> Issue Type: Sub-task
> Components: SCM
> Reporter: Siddhant Sangwan
> Priority: Minor
>
> ContainerBalancer#checkConditionsForBalancing is used to check whether the
> max size to move or max datanodes to involve limits have been reached.
> Currently, ContainerBalancer#doIteration uses this method before finding a
> ContainerMoveSelection for a source datanode. Since the check is performed
> before selecting the next container to move, the configuration
> {color:#172b4d}OZONE_SCM_CONTAINER_SIZE {color}(default is 5GB) is used to
> predetermine if:
> sizeMovedPerIteration + configured container size >=
> maxSizeToMovePerIteration.
> This check will cause the current iteration to stop in cases like:
> maxSizeToMovePerIteration = 100GB, sizeMovedPerIteration = 96GB, and
> {color:#172b4d}OZONE_SCM_CONTAINER_SIZE{color} {color:#172b4d}= 5GB. {color}
> {color:#172b4d}On one hand the current implementation can avoid extra work by
> not letting balancer continue when we are very close to the limit. On the
> other hand, because of this implementation, we will never reach the limit.
> This Jira tracks if it's better to check conditions using container size in
> ContainerBalancer#checkConditionsForBalancing after having found a
> ContainerMoveSelection in ContainerBalancer#doIteration.{color}
>
>
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