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https://issues.apache.org/jira/browse/IOTDB-4037?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17575594#comment-17575594
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Jialin Qiao commented on IOTDB-4037:
------------------------------------
NewStandalone 多以下线程，都是 MPP 框架使用的，其他多余线程已经处理完：
1 个 pool-21-IoTDB-instance-management-1：MPP查询引擎的调度线程
1 个 pool-12-IoTDB-MPPCoordinator-1：MPP 中用于维护读写请求状态的线程
1 个 Sentinel-Thread：查询超时的监控线程
8 个 Worker-Thread：查询执行线程，默认会启动核数个（如果老单机执行查询，也会有类似线程叫 subQuery）
> [ThreadNum] Compare thread number between start-server.sh and
> start-new-server.sh
> ---------------------------------------------------------------------------------
>
> Key: IOTDB-4037
> URL: https://issues.apache.org/jira/browse/IOTDB-4037
> Project: Apache IoTDB
> Issue Type: Improvement
> Components: Core/Server
> Affects Versions: 0.14.0-SNAPSHOT
> Reporter: FengQingxin
> Assignee: Haonan Hou
> Priority: Critical
> Labels: pull-request-available
> Attachments: IoTDB.out, IoTDB1bdf3f9.out, NewIoTDB.out, diff.out,
> image-2022-08-03-16-45-03-901.png, image-2022-08-03-16-45-13-102.png,
> image-2022-08-04-09-05-41-093.png, newIoTDB1bdf3f9.out
>
>
> Produce Steps：
> 1.git clone and build iotdb-master
> 2.using start-server.sh to start iotd instance
> 3.using iotdb-benchmark to test sequence insert(get a
> result:{color:#00875a}thread num 166{color})
> 4.clean the test env and using start-new-server.sh to start a NewIoTDB
> instance
> 5.using iotdb-benchmark to test sequence insert(get a
> result:{color:#ff8b00}thread num 236{color})
>
> *The number of thread of NewIoTDB instance is more than IoTDB instance.*
>
> !image-2022-08-03-16-45-13-102.png!
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