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Questions tagged [tdengine]

TDengine is an open-sourced big data platform under GNU AGPL v3.0, designed and optimized for the Internet of Things (IoT), Connected Cars, Industrial IoT, and IT Infrastructure and Application Monitoring.

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How to migrate data from OpenTSDB to TDengine?

I'm trying to migrate history data used to be stored in OpenTSDB to TDengine as I'm struggling with setting up multiple components like TSD, zookeeper etc. Does TDengine provide any ways to serve this purpose?
GeorgeWill93
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Does TDengine support inserting data with much older timestamp value?

I was trying to insert data with much older timestamp than now. For example given a value of 1 which indicates 1 second after unix epoch(Thursday, January 1, 1970 12:00:01 AM). However when I do this TDengine reports timestamp data out of range…
GeorgeWill93
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TDengine DB error: Timestamp data out of range

Recent I meet a problem while using tdengine, "timestamp out of range " error.I was not very understand about this. I had double check my timestamp, and i'm sure that is correct. The follows are my SQL: create table test (ts timestamp,k int,val…
Ray Shown
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JNI connection is NULL when I use TDengine JDBC-JNI on Windows

I'm using TDengine-server-2.1.2.0 on Linux. There is a TDengine client on Windows:TDengine-client-2.1.2.0-Windows-x64. com.taosdata.jdbc taos-jdbcdriver 2.0.30 I'm using JDBC-JNI to connect TDengine. private static void init() throws Exception { …
cpvmrd
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update not working during batch insert in TDengine database

I created a database with update=1, so that I can update some records based on the timestamp. but I found the update is not working when I use batch insert. I also tried normal insert, updating record is working. Welcome to the TDengine shell from…
Alex
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TDengine windows python connector run examples

I'm a freshman from python, and I want to use TDengine's python connector to connect with the TDengine cluster. I followed the instruction from the website taos connector of to install prepare the dev-environment. The follow process are the steps…
Ray Shown
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TDengine running on Arm32 got java.sql.SQLException

When I run the TDengine time-series database on the ARM32 platform, I got the exception “java.sql.SQLException: ERROR (2308): Can not issue SELECT via executeUpdate()". Environment: OS: Raspbian GNU/Linux 10 ARM Cortext A72 TDengine…
hook capt
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Free up memory in TDengine database?

the taosd memory increased from 8% to 25% after I executed several queries in taos client, why the memory did't go down after the I get query results? Is there any way to free up memory in TDengine database?
Alex
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What are the correct steps to set up the TDengine cluster?

I need to build a cluster with one master node and three worker nodes using TDengine. I followed all the step from the official website (https://www.taosdata.com/en/documentation/cluster), but I still suffered by the offlines from the "show dnodes"…
Jackson
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When using tdengine , parts of the monitoring indicators missed?

After configuring taosadapter and taoskeeper, the monitoring indicators are missing a lot. I'm using Linux ，vision3.1.0.0. Here is a screenshot： I followed the docs, but the grafana panel is full of nodata. i want to know why and fix this. Here is…
Eric
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TDEngine starts fail on Windows Docker after mount /var/lib/taos and /var/log/taos to Windows disks

I'm using Windows Docker to start TDEngine database. After set volume -v /d/DB/Taos/data:/var/lib/taos -v /d/DB/Taos/log:/var/log/taos, the container show the following error message repeatedly, which seems that the udfd process fails to start.…
Hou Lu
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The TDengine interval(1n) query returned one more result than expected

The TDengine interval(1n) query returned one more result than expected. TDengine version 3.0 Executed SQL SELECT _wstart, _wend, LAST ( point_value ) - FIRST ( point_value ) AS point_value FROM …
MrZao
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Conflict transaction not completed

taos> CREATE DATABASE IF NOT EXISTS teste replica 1 keep 3650 minRows 100 maxRows 4096 comp 2 PRECISION 'ms' DB error: Conflict transaciton not completed What is the reason?
Brusarh
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After the root password is changed, the login exits directly

Environment： tdengine:3.0.4. After changing the root password, the login directly exits, and no error is reported. Have you encountered this situation? Command: taos -p "new password" Server installation package：TDengine-server-3.0.4.1
Brusarh
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failed to get fqdn,temporary failure in name resolution

enter image description here failed to get fqdn, code:-3,reason: Temporary failure in name resolution What is the problem with linux always reporting this error? The server uses commands internally to query the database Environment： OS: docker…
Brusarh
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