Tian Jiang created IOTDB-460:
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Summary: [Distributed]Remove data of outdated slots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
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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