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Posted to notifications@iotdb.apache.org by "Jialin Qiao (Jira)" <ji...@apache.org> on 2022/03/06 10:00:17 UTC

[jira] [Created] (IOTDB-2675) Add SchemaEngine above the MManager

Jialin Qiao created IOTDB-2675:
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             Summary: Add SchemaEngine above the MManager
                 Key: IOTDB-2675
                 URL: https://issues.apache.org/jira/browse/IOTDB-2675
             Project: Apache IoTDB
          Issue Type: Improvement
            Reporter: Jialin Qiao
            Assignee: Yukun Zhou


In 0.13, we have a global singleton MManager for all schemas in IoTDB.

 

Since 0.14, we need to degradation the MManager for each storage group. And they are managed by a global SchemaEngine, which holds a field of Map<storage_group(String), MManager>.

This field will be leveraged in the new cluster, each MManager holds a partition of schema in one storage group.

The field will be Map<schema_partition_Id(String), MManager> in each DataNode.



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