You are viewing a plain text version of this content. The canonical link for it is here.

Posted to notifications@iotdb.apache.org by "Wei Shao (Jira)" <ji...@apache.org> on 2020/08/26 08:32:00 UTC

[jira] [Created] (IOTDB-852) Optimize 'delete from' query when deleting multiple timeseries data

Wei Shao created IOTDB-852:
------------------------------

             Summary: Optimize 'delete from' query when deleting multiple timeseries data
                 Key: IOTDB-852
                 URL: https://issues.apache.org/jira/browse/IOTDB-852
             Project: Apache IoTDB
          Issue Type: Improvement
          Components: Core/Engine
            Reporter: Wei Shao
            Assignee: Wei Shao


When deleting data from multiple timeseries, a successful deletion will leave a record in mods file for each timeseries.  
Suppose we executing "delete from root.sg1.d1.*" and d1 contains N measurements, we would write at most N lines of records in each mods file, which may cause performance issue if N is very large.

 



--
This message was sent by Atlassian Jira
(v8.3.4#803005)