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databases
A database is a structured set of data held in a computer, most often a server. Databases use a database management system (DBMS) that interacts with users, similar to a lookup table. Modern databases are designed to allow for creation, querying, updating, and administration of the data it holds.
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See https://github.com/prestosql/presto/runs/1497472672
- tests apparently hanged
- one test thread is here:
2020-12-04T07:53:43.1535741Z "pool-2-thread-2" prio=5 Id=16 BLOCKED on org.testng.TestClass@2a78dd6a owned by "pool-2-thread-1" Id=15
2020-12-04T07:53:43.1537790Z at app//org.testng.internal.TestMethodWorker.invokeBeforeClassMethods(TestMethodWorker.java:158)
2020-12-04T07:53
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Remove dead config
Some config like EnableConnLimit isn't used anywhere and can be removed.
What I Did
I was searching for the db connection limiting.
What I Saw
I ran into EnableConnLimit in config.go
What I Expect
I wanted to find the MaxDbConnPerSec.
- Wikipedia
- Wikipedia
2019/12/02 和Yi Wang沟通交流考虑SQLFLOW可以支持如下的特性
一、基础功能:好用的工具需要一个更加简易友好的界面,让业务开发/分析更加简单
1)设计分析类工具,提供自动联想输入、快速语法、常见语义错误,提升用户体验
应用场景:提供IDE的自动联想功能,提高开发效率;语法和基本语义提前检查,避免提交到后台,执行较长时间后报错
2)大数据量时时间较长,建议提供任务(job)管理、允许用户了解数据执行的状态、监控进度、提供动态调试、watch能力,方便用户感知和调优
应用场景:耗时任务可以快速了解整体进度,提供一些中间的过程信息、耗时等,方便用户进行调优,优化开发
3) 安全权限、用户管理、
应用场景:增加新的数据分析人员、用户权