Java同步队列的相关内容

Java Review - 并发编程_抽象同步队列AQS

概述 AQS——锁的底层支持AbstractQueuedSynchronizer抽象同步队列简称AQS，它是实现同步器的基础组件，并发包中锁的底层就是使用AQS实现的。另外，我们基本上直接使用AQS框架开发的机会很少，但是知道其原理对于架构设计还是很有帮助的。AQS是一个FIFO的双向队列，其内部通...

Java Review - 并发编程_抽象同步队列AQS（下）

维护AQS提供的队列 - 入队操作最后，我们来看看如何维护AQS提供的队列，主要看入队操作。入队操作：当一个线程获取锁失败后该线程会被转换为Node节点，然后就会使用enq(final Node node)方法将该节点插入到AQS的阻塞队列. /** * Inserts node into que...

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Java Review - 并发编程_抽象同步队列AQS（上）

[帮助文档] Dataphin管道任务同步数据报错java.lang.OutOfMemoryError:Compressedclassspace

问题描述用户使用管道任务同步数据时报错“java.lang.OutOfMemoryError: Compressed class space”。问题原因管道任务运行过程中压缩类空间溢出，默认大小1GB。解决方案创建一个shell任务，内容如下：@required_resource{required_...

[帮助文档] 同步报错解密数据异常,请检查配置java.lang.ExceptionAESdecrypterror

问题描述Dataphin输入组件中来源表的数据在上游通过UDF函数进行了加密，管道任务通过解密组件对数据进行解密之后再同步到目标表。管道任务运行报错“解密数据异常, 请检查配置！java.lang.Exception: AES decrypt error”。完整的异常如下：2023-01-12 07...

[帮助文档] Java应用接入账户同步的示例

本篇文档以 Java 为例，讲解作为应用与 IDaaS 的对接。若您希望了解对接原理和调用流程，请参考账户同步接入概述。账户同步接入概述接入账户同步可能需要处理两点：验签解密（可选）解密进行完上述过程后，即可获取到该次事件的请求内容，应用自行处理即可。1. 验签参考账户同步 - IDaaS 同步...

[帮助文档] 同步任务报错java.sql.SQLException:Incorrectstringvalue:'\xF4\x80\x80\x8E\xF4\x80...'forcolumn'XXX'atrow1

问题描述用户在使用集成任务同步数据到MySQL过程中，同步任务报错“java.sql.SQLException: Incorrect string value: '\xF4\x80\x80\x8E\xF4\x80...' for column 'XXX' at row 1”。问题原因报错字段可能存储...

[帮助文档] 管道任务同步读取源表时报错java.sql.SQLExceptionORA-08103

问题描述Dataphin管道任务同步读取源表时，报错“java.sql.SQLException: ORA-08103: 对象不再存在”;源表是存在的。问题原因管道任务同步读取源表时，另一个用户在全量更新该源表，即有一个进程truncate，insert动作，而同时有另一进程对同一表做select动...

Java JUC 抽象同步队列 AQS 解析

抽象同步队列 AQS 解析AQS——锁的底层支持AbstractQueuedSynchronizer 抽象同步队列简称 AQS，它是实现同步器的基础组件，并发包中的锁底层都是使用 AQS 来实现的，下面看下 AQS 的类图结构。该图可知，AQS 是一个FIFO的双向队列，其内部通过节点 head 和...

Java并发包中的同步队列SynchronousQueue实现原理

介绍 Java 6的并发编程包中的SynchronousQueue是一个没有数据缓冲的BlockingQueue，生产者线程对其的插入操作put必须等待消费者的移除操作take，反过来也一样。不像ArrayBlockingQueue或LinkedListBlockingQueue，Synchron...

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