HikariPool-1 - 连接获取期间中断

Question

所以我试图建立连接，但它不起作用，并给了我这个很好的异常（我似乎不明白）：

11:17:07 [SEVERE] java.sql.SQLException: HikariPool-1 - Interrupted during connection acquisition
> 11:17:07 [SEVERE] at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:200)
> 11:17:07 [SEVERE] at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:161)
> 11:17:07 [SEVERE] at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:100)
> 11:17:07 [SEVERE] at net.bungeencoin.mcn.sql.DatabaseConnecter.getConnection(DatabaseConnecter.java:48)
> 11:17:07 [SEVERE] at net.bungeencoin.mcn.sql.Database.getCoins(Database.java:31)
> 11:17:07 [SEVERE] at net.bungeencoin.mcn.listeners.CacheListener.lambda$onJoin$0(CacheListener.java:27)
> 11:17:07 [SEVERE] at net.md_5.bungee.scheduler.BungeeTask.run(BungeeTask.java:63)
> 11:17:07 [SEVERE] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> 11:17:07 [SEVERE] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> 11:17:07 [SEVERE] at java.lang.Thread.run(Thread.java:748)
> 11:17:07 [SEVERE] Caused by: java.lang.InterruptedException
> 11:17:07 [SEVERE] at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:944)
> 11:17:07 [SEVERE] at com.zaxxer.hikari.util.ConcurrentBag.borrow(ConcurrentBag.java:157)
> 11:17:07 [SEVERE] at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:179)
> 11:17:07 [SEVERE] ... 9 more

知道为什么吗？

Answer 1

此错误意味着您有一个或多个长时间运行的 SQL 语句占用了 Hikari 连接池中的所有连接，并且在此期间您的应用程序上出现了其他称为“中断”的东西，调用所有阻塞线程来引发中断异常在他们阻挡的地方。

Hikari CP 使用阻塞结构来保证线程安全，因此出现了这个堆栈跟踪。

相关 GitHub 问题 https://github.com/brettwooldridge/HikariCP/issues/976

这是关于 InterruptedException 主题的经典博客文章： https://www.ibm.com/developerworks/library/j-jtp05236/index.html