周沛辰 created IOTDB-3745:
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             Summary: Deduplicate mods of target files in compaction
                 Key: IOTDB-3745
                 URL: https://issues.apache.org/jira/browse/IOTDB-3745
             Project: Apache IoTDB
          Issue Type: Improvement
            Reporter: 周沛辰
            Assignee: 周沛辰


In a compaction task, compaction modifications from all source files are added 
to the target mods file. This included duplicate modifications, resulting in a 
large target mods file.

The solution is to deduplicate the modifications and then write to the target 
mods file.



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