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1. 发明申请

US20160147618A1 RowID-Based Data Synchronization for Asynchronous Table Replication 有权
标题翻译：用于异步表复制的基于RowID的数据同步
公开(公告)号：US20160147618A1
公开(公告)日：2016-05-26
申请号：US14657938
申请日：2015-03-13
申请人： Juchang LEE , Kyu-Hwan Kim , Hyoung-Jun Ne , Chang-Gyoo Park , Hyejeong Lee
发明人： Juchang LEE , Kyu-Hwan Kim , Hyoung-Jun Ne , Chang-Gyoo Park , Hyejeong Lee
IPC分类号： G06F11/14 , G06F17/30
CPC分类号： G06F11/1469 , G06F11/1464 , G06F17/30368 , G06F17/30371 , G06F17/30377 , G06F17/30575 , G06F17/30578 , G06F17/30876 , G06F2201/80
摘要： Disclosed herein are system, method, and computer program product embodiments for synchronizing lost change between a source table and a replica table. An embodiment operates by detecting a restart at a source node or a replica node. Row-ID values of replication log entries are then compared to row-ID column values of rows at a replica table of the replica node. Replication errors at a source table or the replica table are then determined based on the row-ID comparison. The rows of the source table and the replica table are then updated based on the determination.
摘要翻译：这里公开了用于使源表和副本表之间的丢失变化同步的系统，方法和计算机程序产品实施例。实施例通过检测在源节点或副本节点处的重启来操作。然后将复制日志条目的行ID值与副本节点的副本表上的行的行ID列值进行比较。然后根据行ID比较确定源表或副本表上的复制错误。然后基于确定来更新源表和副本表的行。

2. 发明申请

US20160147813A1 DISTRIBUTED TRANSACTION COMMIT PROTOCOL 审中-公开
标题翻译：分布式交易委托协议
公开(公告)号：US20160147813A1
公开(公告)日：2016-05-26
申请号：US14656280
申请日：2015-03-12
申请人： Juchang LEE , Changgyoo PARK
发明人： Juchang LEE , Changgyoo PARK
IPC分类号： G06F17/30
CPC分类号： G06F16/2322 , G06F16/128 , G06F16/2365
摘要： Disclosed herein are system, method, and computer program product embodiments for implementing a distributed transaction commit protocol with low latency read and write transactions. An embodiment operates by first receiving a transaction, distributed across partial transactions to be processed at respective cohort nodes, from a client at a coordinator node. The coordinator node requests the cohort nodes to prepare to commit respective partial transactions. Upon receiving prepare commit results, the coordinator node generates a global commit timestamp for the transaction. Coordinator node then simultaneously sends the global commit timestamp to the cohort nodes and commit the transaction to a coordinator disk storage. Upon receiving both sending results from the cohort nodes and a committing result from the coordinator disk storage, the coordinator node provides a transaction commit result of the transaction to the client.
摘要翻译：本文公开了用于实现具有低延迟读写事务的分布式事务提交协议的系统，方法和计算机程序产品实施例。实施例通过首先从协调器节点处的客户端接收分布在要在各个队列节点处处理的部分事务的事务。协调器节点请求队列节点准备提交相应的部分事务。在收到准备提交结果后，协调器节点为事务生成一个全局提交时间戳。协调器节点然后同时将全局提交时间戳发送到队列节点，并将事务提交给协调器磁盘存储。在从队列节点接收到发送结果和协调器磁盘存储的提交结果时，协调器节点向客户端提供事务的事务提交结果。

3. 发明申请

US20140156619A1 Locking Protocol for Partitioned and Distributed Tables 有权
标题翻译：分区和分布式表的锁定协议
公开(公告)号：US20140156619A1
公开(公告)日：2014-06-05
申请号：US13750194
申请日：2013-01-25
申请人： Juchang LEE , Jin Yeon Lee , Yongjae Chuh , Jaeyun Noh
发明人： Juchang LEE , Jin Yeon Lee , Yongjae Chuh , Jaeyun Noh
IPC分类号： G06F17/30
CPC分类号： G06F17/30289 , G06F17/30008 , G06F17/30362
摘要： Systems, methods and computer program product embodiments for providing a locking protocol for partitioned and distributed database tables are disclosed herein. A locking method includes executing, by at least one processor, a first database transaction on a second node, attempting to acquire and acquiring a lock on the second node in intentional exclusive mode, executing, by the at least one processor, a second database transaction on a first node, acquiring a lock on the first node in exclusive mode and waiting to acquire a lock on the second node in exclusive mode, routing, by the at least one processor, the first database transaction to the first node and unsuccessfully trying to acquire a lock on the first node and committing, by the at least one processor, the first database transaction.
摘要翻译：本文公开了用于为分区和分布式数据库表提供锁定协议的系统，方法和计算机程序产品实施例。锁定方法包括由至少一个处理器执行第二节点上的第一数据库事务，尝试以有意的排他模式获取和获取第二节点上的锁定，由至少一个处理器执行第二数据库事务在第一节点上，以独占模式获取第一节点上的锁定，并且以排他模式等待获取第二节点上的锁定，由至少一个处理器将第一数据库事务路由到第一节点，并且不成功地尝试获得第一节点上的锁并由至少一个处理器提交第一数据库事务。

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