taosdata/TDengine

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High-performance, scalable time-series database designed for Industrial IoT (IIoT) scenarios

Stars: 25.1k
Forks: 5k
Open beginner issues: 0
Indexed issues: 415
Avg merge: 4d 59m
Merged PRs (30d): 7

Dominant language: C
License: AGPL-3.0
Last GitHub push: Sep 2, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted

Beginner friendly Everything

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415 open issues indexed

GROUP BY on a VARCHAR column is priced by the declared width, not the data: 10s at VARCHAR(32) vs not completing at VARCHAR(4096) for identical values (3.4.2.5) Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

taosdata/TDengine#35453 · 1 comment · 1 reaction · Opened Aug 31, 2026
GROUP BY is capped at 10,000,000 groups: undocumented, no configuration parameter, enforced only after a full scan (3.4.2.5) Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

taosdata/TDengine#35452 · 1 comment · 1 reaction · Opened Aug 31, 2026
AGG(DISTINCT x) beside an aggregate over an expression fails with Out of range [0x80000112] (3.4.2.5) Open

Difficulty 4/5 3-5 days Newbie friendliness 62/100

taosdata/TDengine#35451 · 1 comment · 1 reaction · Opened Aug 31, 2026
GROUP BY ... LIMIT n returns all groups when the query has no ORDER BY (3.4.2.5) Open

Difficulty 4/5 3-5 days Newbie friendliness 64/100

taosdata/TDengine#35450 · 1 comment · 1 reaction · Opened Aug 31, 2026
taosd segfaults on COUNT(DISTINCT col) when the deduplicated set spills to disk (3.4.2.5) Open

Difficulty 4/5 3-5 days Newbie friendliness 65/100

taosdata/TDengine#35449 · 1 comment · 1 reaction · Opened Aug 31, 2026
taos2.2.2.10 报错Database memory is full ，建不了新表，以及两个vnode同步有问题 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

taosdata/TDengine#35443 · 1 comment · 1 reaction · Opened Aug 27, 2026
taosdump 3.3.4.3 导出数据时吐核 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

taosdata/TDengine#35437 · 2 comments · 1 reaction · Opened Aug 18, 2026
创建流后，刚开始可以执行，跑一段时间后出现错误 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

taosdata/TDengine#35420 · 3 comments · 1 reaction · Opened Aug 4, 2026
insert时0X530错误 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

taosdata/TDengine#35419 · 2 comments · 1 reaction · Opened Jul 31, 2026
[taosdump] aborts DB dump with rc 255 on tables written during the dump Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 72/100

taosdata/TDengine#35415 · 1 comment · 1 reaction · Opened Jul 22, 2026
Feature: symmetric first-row-per-partition query for super tables, e.g. FIRST_ROW(*) Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

taosdata/TDengine#35407 · 2 comments · 1 reaction · Opened Jul 17, 2026
s3toss can panic on malformed configuration entries Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

taosdata/TDengine#35403 · 1 reaction · Opened Jul 16, 2026
dnode 出现dropping状态 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

taosdata/TDengine#35400 · 1 comment · 1 reaction · Opened Jul 11, 2026
版本3.3.6 控制台风控输出日志 udfd process exited with status 249, signal 0 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

taosdata/TDengine#35397 · 1 comment · 1 reaction · Opened Jul 9, 2026
在Dbeaver中，不能下载、使用最新驱动 Open

help wanted question

Difficulty 3/5 1-2 days Newbie friendliness 42/100

taosdata/TDengine#35396 · 2 comments · 1 reaction · Opened Jul 7, 2026
td夸多个版本搬迁，导致 vnode12 损坏，然后整个taosd 挂掉 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

taosdata/TDengine#35387 · 2 comments · 2 reactions · Opened Jun 12, 2026
jdbc:taos-ws 使用最新版本，最新客户端出现频繁OOM问题 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

taosdata/TDengine#35386 · 1 comment · 1 reaction · Opened Jun 11, 2026
jdbc:TAOS-WS通过mybatisplus批量插入报错,换RS包正常 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

taosdata/TDengine#35384 · 1 comment · 1 reaction · Opened Jun 10, 2026
vgroup leader负载不均 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

taosdata/TDengine#35378 · 3 comments · 1 reaction · Opened Jun 4, 2026
咨询是否存在文件句柄超限问题 Open

help wanted question

Difficulty 5/5 Over a week Newbie friendliness 25/100

taosdata/TDengine#35377 · 1 comment · 1 reaction · Opened Jun 3, 2026
[aw] Weekly Repository Report failed (pre-agent) Open

agentic-workflows

Difficulty 3/5 1-2 days Newbie friendliness 45/100

taosdata/TDengine#35375 · 15 comments · Opened May 31, 2026
taos 驱动 [B cannot be cast to java.lang.Float Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

taosdata/TDengine#35369 · 1 comment · 1 reaction · Opened May 28, 2026
Java WebSocket JDBC 的 schemaless 写入性能明显低于原生 JDBC，慢一个数量级 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

taosdata/TDengine#35361 · 2 comments · Opened May 25, 2026
, code: 1000, reason: unknown, remote: true 什么原因 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

taosdata/TDengine#35354 · 1 comment · Opened May 21, 2026
Logic Flaw: SM4_ENCRYPT/DECRYPT functions return plaintext without warning in Community Edition Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 58/100

taosdata/TDengine#35349 · Opened May 18, 2026
tsd3.3.6使用websoket链接报错 Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 45/100

taosdata/TDengine#35333 · 1 comment · Opened May 14, 2026
dbeaver连接正常查看表报错，但是执行sql正常，目前空数据库没数据 Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 30/100

taosdata/TDengine#35295 · 3 comments · Opened May 8, 2026
[Bug]: SEGV null pointer dereference in qWorkerInit (qworker.c:1481) during vnode startup on 3.4.0.9 Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

taosdata/TDengine#35280 · 1 comment · Opened May 5, 2026
DataLab Analysis Tool support Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

taosdata/TDengine#35225 · 1 comment · Opened Apr 24, 2026
删除超级表，未删除子表，再次创建超级表，插入数据能成功，但是分表用的tag为NULL Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

taosdata/TDengine#35182 · 2 comments · Opened Apr 20, 2026
集群社区版，关闭一个节点后整个服务不可用 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

taosdata/TDengine#35135 · 4 comments · Opened Apr 14, 2026
tdengien查询同一个ts时间，oder by desc 和asc的时候结果不同 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

taosdata/TDengine#35127 · 2 comments · Opened Apr 14, 2026
如何为TDengine的二级压缩引入经过修改的压缩库 Open

help wanted question

Difficulty 4/5 3-5 days Newbie friendliness 40/100

taosdata/TDengine#35077 · 1 comment · Opened Apr 7, 2026
Occasionally reports 0x2318 error codes for long runs Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

taosdata/TDengine#35074 · Opened Apr 7, 2026
[aw] Weekly Repository Report failed (pre-agent) Open

agentic-workflows

Difficulty 4/5 3-5 days Newbie friendliness 25/100

taosdata/TDengine#34983 · 7 comments · Opened Mar 29, 2026
导入数据集时遇到了性能问题 Open

help wanted question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

taosdata/TDengine#34980 · 2 comments · Opened Mar 29, 2026
Tdengine 3.2.0.0.0 集群环境下同步数据慢慢慢慢 Open

help wanted question

Difficulty 5/5 Over a week Newbie friendliness 25/100

taosdata/TDengine#34802 · 3 comments · 1 reaction · Opened Mar 17, 2026
查询响应时间波动很大，导致并发性能较低以及在高并发下查询响应变得更长导致响应超时 Open

help wanted question

Difficulty 4/5 3-5 days Newbie friendliness 25/100

taosdata/TDengine#34554 · 3 comments · Opened Feb 11, 2026
taosd SEGV in addTagPseudoColumnData when TMQ polls while streams write to same vgroup (macOS ARM64) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

taosdata/TDengine#34544 · 9 comments · Opened Feb 9, 2026
安装3.4.0登录taos-explorer报错Invalid password Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 20/100

taosdata/TDengine#34535 · 2 comments · Opened Feb 7, 2026
查询超级表时TIMESTAMP字段作为条件和GEOMETRY作为条件都可以正常查询，两个字段同时作为条件查询报错！！！ Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

taosdata/TDengine#34534 · 1 comment · Opened Feb 7, 2026
扩容新节点的vnodes数量为0 Open

help wanted question

Difficulty 4/5 3-5 days Newbie friendliness 25/100

taosdata/TDengine#34512 · 1 comment · Opened Feb 5, 2026
3.4.0.2版本中在计数窗口流计算中使用group_concat聚合函数会引发宕机和报错 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

taosdata/TDengine#34504 · 2 comments · Opened Feb 5, 2026
TDengine oss 3.3.6 订阅超级表时如何获取标签中内容或者获取子表名 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 30/100

taosdata/TDengine#34452 · 1 comment · Opened Jan 29, 2026
TDengine oss 3.3.6 taos-jdbcdriver 3.7.8 订阅select 查询时一段时间后收不到消息（出现了hash键冲突） Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 28/100

taosdata/TDengine#34451 · Opened Jan 29, 2026
主题订阅突然不好使了 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 20/100

taosdata/TDengine#34416 · 3 comments · Opened Jan 27, 2026
PERIOD trigger with multi-table JOINs crashes taosd with Sigfault 11 Open

bug

Difficulty 5/5 Over a week Newbie friendliness 35/100

taosdata/TDengine#34393 · 4 comments · Opened Jan 23, 2026
TDengine ERROR (0x2603)，3.4.0版本TDengine Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

taosdata/TDengine#34313 · 1 comment · Opened Jan 15, 2026
误升级到企业版后怎么回退，或者切换到社区版 Open

Difficulty 3/5 1-2 days Newbie friendliness 20/100

taosdata/TDengine#34305 · 1 comment · Opened Jan 15, 2026
last() aggregation changes sum() result Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

taosdata/TDengine#34258 · 1 comment · Opened Jan 12, 2026

taosdata/TDengine

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