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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 many client SDK or protocol that Apache IoTDB supports?

I'm trying to test IoTDB 0.11.4 on my local PC. Besides the java and python client, is there any other languages SDK supported? Like c#, erlang or golang...
Hunter King
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Too big tsfile / datastore in Apache IoTDB database (version 0.11.2)

We are using Apache IoTDB Server in Version 0.11.2 in a scenario and observe a data directory / tsfiles that are way bigger than they should be (about 130 sensors with 4 Million double values for each sensor but the files are about 200gb). Are there…
Julian
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How to preserve data when replacing data and wal directories when upgrading to active-active mode of Apache IoTDB?

Can I directly replace the data and wal directories and still obtain my original datasets when I upgraded my standalone version of Apache IoTDB to active-active mode? If not, how can I retain my data when updated to active-active mode? I originally…
user22177617
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How to get query result when using "floating-point type parameter equals to certain number" in Apache IoTDB?

How to get query result when using "floating-point type parameter equals to certain number" in Apache IoTDB? When I query data in Apache IoTDB, I realized that if the parameter is a floating-point type, when using "where parameter = XX" statement,…
Pan Weicheng
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How to change the password of one datanode in cluster version of Apache IoTDB?

Is it not possible to change the password in the Cluster Version 1.0 of Apache IoTDB? I checked the official guide and other information, and it seems like I cannot only change password of one DataNode. Wonder if I can, and how I can change the…
CC Deng
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Why the .mods files cannot be loaded when updating to Apache IoTDB Version 1.0?

Having problem synchronizing some ".mods" files. I have updated to Apache IoTDB Version 1.0, and other files in previous IoTDB version can be loaded into Version 1.0, but the three ".mods" files cannot be synchronized. However, some other ".mods"…
Jackie Du
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How to settle "aligned in tsfile but not aligned in IoTDB" error in Apache IoTDB?

ERROR o.a.i.d.q.e.PlanExecutor:1329 · fail to load file 1658465460360-0-0-0.tsfile exception.query.QueryProcessException: root.ads_joOJKIUBLUNro3Wl2Ue signal is aligned in the loading TsFile but is not aligned in IoTDB. I found the error…
李袖旗
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Where and how should I write or set the class of trigger processing of Apache IoTDB?

I tried to create trigger using the following command of Apache IoTDB: CREATE TRIGGER `alert-listener-sgld1s1` AFTER INSERT ON root.sgl.d1.s1 AS 'org.apache.iotdb.db.engine.trigger.example.AlertListener' WITH ( 'lo' = '0', 'hi'= '100.0'). However I…
user21750676
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How to configure ip in session setting of connectable node in Apache IoTDB?

I am currently trying to specify connectable node by setting session in Apache IoTDB. I checked the official guide and seems like users can configure one ip and multiple ip in session. May I ask, is there a difference between the two choices here if…
Messi10LHC
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How should I change the path name of time series to avoid reporting error in Apache IoTDB?

IoTDB> create timeseries root.xt.dcsfw.other.21D.21DPU36COMA130 Msg: 700: Error occurred while parsing SQL to physical plan: line 1:58 mismatched input '' expecting {ID, QUOTED_ID} Is there any problem with the grammar of this time series in…
Iustar
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How can Apache IoTDB monitor new data and transport through different platforms?

I am still getting to know Apache IoTDB, and I learned that IoTDB can generate real-time monitoring of new data and then transport them to other systems or platforms. However, I am not sure how IoTDB achieve this, can anyone tell me is this be…
李袖旗
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How to set sgLevel parameter when loading tsfile after exporting tsfile in Apache IoTDB?

I exported the tsfile, and tried to load this tsfile again in Apache IoTDB. Seems like I got an error message that prompted my sgLevel setting. I set sgLevel to be true, and the error message is: mismatched input 'true' expecting INTEGER_LITERAL.…
wing z
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Apache IoTDB cannot delete a time series automatically created by Session

Session's write interfaces such as insertTablet and insertRecords interface do not do format checking for sequences, and sequences that do not conform to naming conventions are still created automatically. These sequences cannot be deleted through…
BensonChou
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How to modify the datatype of time series in Apache IoTDB?

The datatype in my original time series of Apache IoTDB is in "INT". Since there may be more information stored and updated to IoTDB in the future, I want to know if I want to change the datatype of this time series (for example, to "DOUBLE"), can…
brook
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Why data query speed after data synchronization of single node to cluster nodes is much slower than to single node of Apache IoTDB?

I would like to ask about the latest 1.0 cluster version of Apache IoTDB. When I use tsfile to synchronize the data in the single node to the cluster nodes of this version, the query speed of the cluster version is far slower than that of a single…
user21750676
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