[
https://issues.apache.org/jira/browse/IOTDB-3010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17533589#comment-17533589
]
Yukun Zhou commented on IOTDB-3010:
-----------------------------------
https://github.com/apache/iotdb/pull/5695
> [ schema recovery ] Performance needs to be optimized
> -----------------------------------------------------
>
> Key: IOTDB-3010
> URL: https://issues.apache.org/jira/browse/IOTDB-3010
> Project: Apache IoTDB
> Issue Type: Bug
> Components: Core/Schema Manager
> Reporter: 刘珍
> Assignee: Yukun Zhou
> Priority: Major
> Attachments: screenshot-1.png
>
>
> master_0425_907c06e
> 100 million sequences,10sg, 500dev :
> 2022-04-26 11:42:48,325 [main] INFO o.a.i.db.service.IoTDB:239 -
> {color:#DE350B}*spend 2643689ms to recover schema.*{color}
> 100 million sequences,50sg, 500dev :
> {color:#DE350B}*18小时没完成*{color}，{color:#DE350B}最终34.5个小时恢复完成{color}
> 2022-04-29 01:13:02,006 [main] INFO o.a.i.db.service.IoTDB:240 -
> {color:#DE350B}*spend 124104562ms *{color}to recover schema.
> 从日志中分析：
> 只有1个main线程在恢复，DataRegion【0-41】恢复的快，之后开始非常非常慢。
> !screenshot-1.png!
> 10 million sequences，10sg，100dev :
> 2022-04-26 14:24:01,430 [main] INFO o.a.i.db.service.IoTDB:239 -
> {color:#DE350B}*spend 830476ms to recover schema.*{color}
> Schema recovery performance needs to be optimized
--
This message was sent by Atlassian Jira
(v8.20.7#820007)
