Stack Overflow
Stack Overflow

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.

187 questions
0
votes
0 answers

How can Apache IoTDB replicate batch of data and change timestamps?

Now I need a set of historical data in Apache IoTDB to train data models, so I decide to replicate the current stored data and modify the timestamps. I wonder how can IoTDB efficiently replicate large amount of data? Anyone know that? Help please
harden
  • 3
  • 1
0
votes
1 answer

How should the error in the root directory cluster settings of Apache IoTDB Version 0.13 be solved?

mvn clean package -pl cluster -am -DskipTests [Error] Could not find the selected project in the reactor: cluster @ I was following the tutorial user guide on cluster settings of Apache IoTDB Version 0.13. When I entered "mvn clean package -pl…
Iustar
  • 3
  • 2
0
votes
1 answer

How to simply package the source code of Apache IoTDB into jar package?

Does anyone have experience on how to package the source code of Apache IoTDB into a jar package? I know that direct compilation will be capable, but I cannot find which is the executable jar package in the given document since many are…
user21750676
  • 11
  • 1
0
votes
1 answer

Why do the queried data result of client side and program side of Apache IoTDB are not the same?

I would like to ask why the data result queried from the Apache IoTDB client side is different from the data queried from the program? In the end of the result queried from the program, there is a [Time] at the end. What does this [Time] at the end…
Iustar
  • 3
  • 2
0
votes
1 answer

What is the reason for the sudden IoTConsensus startup error of Apache IoTDB?

ERROR·o.a.i.db.service.DataNode:181-·Failto:start·server org.apache.iotdb.commons.exception.StartupException: org.apache. iotdb.commons .exception.StartupException:Failed·to:start，IoTConsensus Servicel,because:IoTDB: failed to start IoTConsensus…
Iustar
  • 3
  • 2
0
votes
1 answer

How to deal with dispatch write failed error of Apache IoTDB Version 0.14?

I would like to ask that Apache IoTDB Version 0.14.0 preview 3 occasionally reported the "dispatch write failed" error. The code of the error are 506 and 338. Has anyone encountered this problem and what is the reason for this? I worried that this…
李袖旗
  • 1
0
votes
1 answer

How to both execute group level and fill when querying data in Apache IoTDB?

I currently use Version 0.13.3 of Apache IoTDB. When I query data, I want to use group level to show the query data results, and also I want to fill the empty data points. How to write the query command to achieve the data display that I need? how…
张满月
  • 3
  • 2
0
votes
1 answer

How to change the default time range of storage group data directory in Apache IoTDB?

I noticed that in order to avoid data expiration in Apache IoTDB, the data of each stroage group will be segmented and stored by time range. By default, the data will be stored in a different directory in units of weeks. I want to know if I can…
张满月
  • 3
  • 2
0
votes
1 answer

How to close the automatic creation of time series with FLOAT data type in Apache IoTDB?

If the time series has already been created and deleted in Apache IoTDB, and when I tried to create it again, the time series with FLOAT data type will be automatically created. Is this a bug or a setting that can be changed? If it is a setting, how…
kagu
  • 5
  • 1
0
votes
1 answer

Why did Apache IoTDB automatically switched the data type back to the previous setting?

I am now using Apache IoTDB Version 1.0. The data type written is reset to be INT type in the code (the previous type is in FLOAT), but when the data was written, the data type still becomes FLOAT. I want to know why the data type is automatically…
kagu
  • 5
  • 1
0
votes
1 answer

Why Apache IoTDB shows different timestamps reading data compared to settings when inserting data records?

I want to ask about the timestamp problem encountered in Apache IoTDB client. I try to execute insert_record using the current_unix_timestamp value, which is 1670249372 (corresponding to Mon Dec 05 2022 14:09:32 GMT+0000), but when IoTDB read the…
wing z
  • 1
0
votes
0 answers

How to add tags to time series created by metadata template in Apache IoTDB?

Msg: 508: Path [root.test.s77.xxxxx.x1] does not exist I would like to ask a question about Apache IoTDB. Can tags be added to the time series created through the metadata template? When I tried to add a tag to one of the time series, the error…
Messi10LHC
  • 1
  • 1
0
votes
1 answer

How to execute moving average method in Apache IoTDB?

My application scenario of using Apache IoTDB involves keeping track of price trends for specific securities. Therefore, if the database can generate moving average method to capture the average change in a data series over time, that will be very…
guhdgrtyh
  • 11
  • 1
0
votes
0 answers

How to solve register udf error in Apache IoTDB Version 0.14?

When I tried to load UDF in Apache IoTDB Version 0.14, I executed register-UDF.sh command And an error is reported: Ms: 400: Failed to register UDF distinct(class name: cn.eduthu.iotdb.quality.dprofile.uDFDistinct,uris: 11), because of exception:…
harden
  • 3
  • 1
0
votes
1 answer

How to complete data migration without "invalid method name" error from Apache IoTDB Version 0.13.2 to Version 1.0.0?

I want to migrate data from Apache IoTDB Version 0.13.2 to Version 1.0.0. I checked the official user guide and use the DataMigrationExample to implement data replication, but the execution fails. The error reported "Invalid method name:…
Messi10LHC
  • 1
  • 1
1 2 3
…
12 13