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https://issues.apache.org/jira/browse/IOTDB-3884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17572941#comment-17572941
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Quan Siyi commented on IOTDB-3884:
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The issue IOTDB-3971 aims to process data in a column-based format from TsBlock
to accelerate cross space compaction and unseq inner space compaction
> [Performance]Cross_space and unseq_space compaction are slower at aligned
> timeseries
> ------------------------------------------------------------------------------------
>
> Key: IOTDB-3884
> URL: https://issues.apache.org/jira/browse/IOTDB-3884
> Project: Apache IoTDB
> Issue Type: Bug
> Components: Core/Compaction
> Affects Versions: 0.14.0-SNAPSHOT
> Reporter: FengQingxin
> Assignee: Quan Siyi
> Priority: Major
> Attachments: image-2022-07-19-14-17-03-521.png,
> image-2022-07-19-14-29-01-699.png, image-2022-07-19-14-30-03-267.png,
> screenshot-1.png
>
>
> Please refer to below picture:
> Test scenario:Build and Start an iotdb instance of each commit id in master
> branch with one dataset, statistics the compaction time in logs.
> !image-2022-07-19-14-30-03-267.png|width=928,height=362!
> !image-2022-07-19-14-29-01-699.png|width=931,height=187!
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