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Posted to notifications@iotdb.apache.org by "Tian Jiang (Jira)" <ji...@apache.org> on 2020/04/20 03:28:00 UTC

[jira] [Created] (IOTDB-604) [Distributed] More robust cluster readers

Tian Jiang created IOTDB-604:
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             Summary: [Distributed] More robust cluster readers
                 Key: IOTDB-604
                 URL: https://issues.apache.org/jira/browse/IOTDB-604
             Project: Apache IoTDB
          Issue Type: Improvement
          Components: Core/Cluster
            Reporter: Tian Jiang


The current cluster readers only read data from a fixed node so if the targeted node fails, the query is errored and must be retried.

To improve the robustness of queries, the cluster readers should know the data group to query instead of a single node and it should also remember its current position so that after switching to another node, it will not read duplicated data.



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