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Posted to dev@iotdb.apache.org by Jialin Qiao <qi...@apache.org> on 2022/06/14 09:31:08 UTC

New function: show region

Hi,

I created an issue to query the region distribution [1].

This could be used in some scenarios:
(1) To see if the region migration is successful after removing a datanode
(2) To see if the region is well-distributed in datanodes

The query result could contain 5 columns:

RegionID, RegionType, DataNodeID, RPCAddress, RPCPort

Any suggestions?

[1] https://issues.apache.org/jira/browse/IOTDB-3488

Thanks,
—————————————————
Jialin Qiao
Apache IoTDB PMC

Re: New function: show region

Posted by Jialin Qiao <qi...@apache.org>.
Hi,

Good point!
We could add a status column, which may contain the following enums:

Up,
Moving to {DataNodeId}
Deleting

Besides, how many slots a region contains may also be helpful:

Status, RegionID, RegionType, Slots, DataNodeID, RPCAddress, RPCPort

There may need to reconsider some concepts about partition:
Schema: series partition  -> schema slot
Data: series partition + time partition -> data slot

Thanks,
—————————————————
Jialin Qiao
Apache IoTDB PMC


Eric Pai <er...@hotmail.com> 于2022年6月14日周二 17:41写道：

> If one region is under migration, what the output will be? Do we need a
> state/status field?
>
> 在 2022/6/14 17:31，“Jialin Qiao”<qi...@apache.org> 写入:
>
>     Hi,
>
>     I created an issue to query the region distribution [1].
>
>     This could be used in some scenarios:
>     (1) To see if the region migration is successful after removing a
> datanode
>     (2) To see if the region is well-distributed in datanodes
>
>     The query result could contain 5 columns:
>
>     RegionID, RegionType, DataNodeID, RPCAddress, RPCPort
>
>     Any suggestions?
>
>     [1]
> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fissues.apache.org%2Fjira%2Fbrowse%2FIOTDB-3488&amp;data=05%7C01%7C%7Cf33dbe8611d346568c6108da4de8b3fe%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637907959094748610%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&amp;sdata=0ah6sTa1PKadQosZ4RnJA6FkInEb08yTW7AGnA9t35M%3D&amp;reserved=0
>
>     Thanks,
>     —————————————————
>     Jialin Qiao
>     Apache IoTDB PMC
>
>

Re: New function: show region

Posted by Eric Pai <er...@hotmail.com>.
If one region is under migration, what the output will be? Do we need a state/status field?

在 2022/6/14 17:31，“Jialin Qiao”<qi...@apache.org> 写入:

    Hi,

    I created an issue to query the region distribution [1].

    This could be used in some scenarios:
    (1) To see if the region migration is successful after removing a datanode
    (2) To see if the region is well-distributed in datanodes

    The query result could contain 5 columns:

    RegionID, RegionType, DataNodeID, RPCAddress, RPCPort

    Any suggestions?

    [1] https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fissues.apache.org%2Fjira%2Fbrowse%2FIOTDB-3488&amp;data=05%7C01%7C%7Cf33dbe8611d346568c6108da4de8b3fe%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637907959094748610%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&amp;sdata=0ah6sTa1PKadQosZ4RnJA6FkInEb08yTW7AGnA9t35M%3D&amp;reserved=0

    Thanks,
    —————————————————
    Jialin Qiao
    Apache IoTDB PMC

回复：New function: show region

Posted by Yuhua Ren <24...@qq.com.INVALID>.
Maybe we can add one more column to the query result:
StorageGroup




------------------&nbsp;原始邮件&nbsp;------------------
发件人:                                                                                                                        "dev"                                                                                    <qiaojialin@apache.org&gt;;
发送时间:&nbsp;2022年6月14日(星期二) 下午5:31
收件人:&nbsp;"dev"<dev@iotdb.apache.org&gt;;

主题:&nbsp;New function: show region



Hi,

I created an issue to query the region distribution [1].

This could be used in some scenarios:
(1) To see if the region migration is successful after removing a datanode
(2) To see if the region is well-distributed in datanodes

The query result could contain 5 columns:

RegionID, RegionType, DataNodeID, RPCAddress, RPCPort

Any suggestions?

[1] https://issues.apache.org/jira/browse/IOTDB-3488

Thanks,
—————————————————
Jialin Qiao
Apache IoTDB PMC