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https://issues.apache.org/jira/browse/IOTDB-460?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tian Jiang reassigned IOTDB-460:
--------------------------------
Assignee: Tian Jiang
Resolution: Fixed
> [Distributed] Remove data of outdated slots
> -------------------------------------------
>
> Key: IOTDB-460
> URL: https://issues.apache.org/jira/browse/IOTDB-460
> Project: Apache IoTDB
> Issue Type: Improvement
> Reporter: Tian Jiang
> Assignee: Tian Jiang
> Priority: Major
> Labels: data-transfer, distributed
>
> In node addition/removal, the slots managed by a node will change. However,
> the data of corresponding slots cannot be removed yet because the new holders
> of the slots will pull such data to themselves. As the data pulling is issued
> by the new holders randomly, it is hard for the previous holders to find out
> when will the data be needless. As a result, the previous holder cannot
> delete the local data with confidence.
> It will be necessary to find a way for the previous holders to know when the
> data has been replicated to the new holders so that they will be able to
> remove the local data.
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