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Questions tagged [apache-iotdb]

Questions related to the Apache IoTDB Project (https://iotdb.apache.org/). Apache IoTDB (Database for Internet of Things) is an IoT native database with high performance for data management and analysis, deployable on the edge and the cloud.

The Project itself states (see https://iotdb.apache.org/)

Apache IoTDB (Database for Internet of Things) is an IoT native database with high performance for data management and analysis, deployable on the edge and the cloud. Due to its light-weight architecture, high performance and rich feature set together with its deep integration with Apache Hadoop, Spark and Flink, Apache IoTDB can meet the requirements of massive data storage, high-speed data ingestion and complex data analysis in the IoT industrial fields.

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How to change the password of user of root in Apache IoTDB?

I am new to Apache IoTDB and am trying to learn about administration management. I have a question about user settings: can the password of the "root" user be changed? If it can be changed, how should I change it in Apache IoTDB?
user22177617
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Why the original data sets cannot be query out when updating to Version 1.0.1 of Apache IoTDB?

I am now upgrading Apache IoTDB Version 1.0 to 1.0.1, and when I migrate the original data files, I directly replaced the data directory into the new version, but when I tried to query data, it seems like there is no data can be viewed. Anyone know…
Jackie Du
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How to establish connection to cli when updating to Version 1.0.1 of Apache IoTDB?

When I installed Apache IoTDB Version 0.13.4, I can connect through cli, but when I tried to update to Version 1.0.1, an error prompted: Can not establish connection with jdbc:iotdb://172.16.32.228:6667/ : Socket is closed by peer.. Host is…
Sihan Liu
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How should I copy data between different storage groups in Apache IoTDB?

is it possible to migrate or copy the data of one storage group to another storage group, or to update storage group in Apache IoTDB? Is there any way, or any function in IoTDB that I can do this in an easy way? I haven't found a suitable way to…
zlyf
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Why Apache IoTDB reported if certain time series exists" after upgraded to Version 1.0.1?

I would like to ask you guys a question. I am developing an Apache IoTDB client based on c#, and I called "CheckTimeSeriesExistsAsync" in 1.0.1 version. However, IoTDB reports an error: "could not check if certain time series exists". The code has…
Thoreau I
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How to reset the timeout period of Apache IoTDB to longer time?

Can the timeout period of Apache IoTDB be reset? I wonder if it can ibe set longer, for example, set to1 hour? I am trying to use IoTDB after updating to Version 1.0.1, and there is no such problem with the older version, V 0.13.3. Does anyone know…
Pan Weicheng
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Why the log reported ID inconsistent when started a new instance with docker of Apache IoTDB?

I directly copied the complete data directory from one instance, and then started a new instance with docker on another server of Apache IoTDB. The data directory is the one just copied, but the log prompts that the IDs are inconsistent. The startup…
shuww
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How to deal with "transport not open" time zone error when creating storage group in Apache IoTDB?

I would like to ask if anyone encountered RuntimeError:('Could not set time zone because: ', TTTransportException('Transport not open')) error when creating storage group in Apache IoTDB? How to solve it?
Hester Tso
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How to change the time in Apache IoTDB to timestamp format?

Currently, the "time" column of Apache IoTDB looks like "2023-02-08T11: 25:15.953+08:00". Is there any way to make the time here displayed as a timestamp? I checked the official document, and it only says that the time can be displayed as Long type,…
user22177617
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Why "last *" command of Apache IoTDB cannot query out all the points and values?

There is a strange problem I found here in Apache IoTDB. I used "select last * from [path_name]", and the query result does not display some points and the values of these points. However, if I use "select last point from [path_name]", I can still…
NKZ
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How to stop insertTablet writing data from automatically filling null value with 0 in Apache IoTDB?

For Version 0.12, I use java to call for IoTDB client to write data, and I execute “session.insertTablet” to do the writing operation. In a certain period of time, some fields have no data, and these data will be automatically filled with 0 values.…
zx shen
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How to deal with "compaction overlapped" error after constructing Apache IoTDB cluster in V1.0.0?

I use Apache IoTDB V1.0.0 to create a new IoTDB cluster. When the project is running, I inserted data into IoTDB and check the log of IoTDB, and find the following error: [pool-46-IoTDB-Compaction-6] ERROR o.a.i.d.e.c.CompactionUtils:281 - root.test…
王楚璇
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Why the previous data cannot be queried when data directory did not change in Apache IoTDB?

After Apache IoTDB Version 0.12 restarts, the previous data cannot be queried, but the data in the current time series sequence can be found. However, new data can be written and the latest data can be found. I can still view the previous data in…
Sihan Liu
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How to change the original root name to "legal path" when upgrading to Apache IoTDB V1.0?

I recently updated Apache IoTDB from Version 0.13 to Version 1.0. I use the same root name from the same data, but there was this error: "root.093fb3f0-1ebf-11ed-a398-779d162994d2.04b70ba0-1ecc-11ed-95ac-a371ce2bfa37 is not a legal path". Is this…
user22177617
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Why reported "parsing error to physical plan" when dumping csv results in Apache IoTDB?

Why reported "parsing error to physical plan" when dumping csv results in Apache IoTDB? When I tried to dump results of csv data files in Apache IoTDB, an error reported: "Cannot dump result because: 401: Error occurred while parsing SQL to physical…
Weicheng Pan
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