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https://issues.apache.org/jira/browse/IOTDB-852?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17186363#comment-17186363
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Wei Shao commented on IOTDB-852:
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This issue is identical to
[[IOTDB-829]|https://issues.apache.org/jira/projects/IOTDB/issues/IOTDB-829?].
Closed.
> 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
> Priority: Major
> Labels: performance
>
> 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.
>
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