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1. 发明申请

US20130166523A1 Parallel Execution In A Transaction Using Independent Queries 审中-公开
标题翻译：在使用独立查询的事务中并行执行
公开(公告)号：US20130166523A1
公开(公告)日：2013-06-27
申请号：US13332483
申请日：2011-12-21
申请人： Amit PATHAK , Sunil Sayyaparaju , Rahul Mittal
发明人： Amit PATHAK , Sunil Sayyaparaju , Rahul Mittal
IPC分类号： G06F17/30
CPC分类号： G06F9/466
摘要： Embodiments include a method, apparatus and computer program product for executing a database transaction in parallel using subtransactions. The method includes receiving a transaction at an application, the transaction having a first statement and a second statement, and determining whether operation of the first statement is independent from operation of the second statement. When it is determined that operation of the first statement is independent from operation of the second statement, assigning the first statement to a first subtransaction and the second statement to a second subtransaction, the first and second subtransactions being part of a transaction group. The method further includes executing the subtransactions using resources of the database. Finally, when execution of all of the subtransactions have successfully completed, committing all of the subtransactions.
摘要翻译：实施例包括用于使用子事务并行地执行数据库事务的方法，装置和计算机程序产品。所述方法包括在应用程序处接收事务，所述事务具有第一语句和第二语句，以及确定所述第一语句的操作是否独立于所述第二语句的操作。当确定第一语句的操作独立于第二语句的操作时，将第一语句分配给第一子事务处理，将第二语句分配给第二子事务处理，则第一和第二子事务是事务组的一部分。该方法还包括使用数据库的资源来执行子事务处理。最后，当所有子事务的执行成功完成时，提交所有子事务。

2. 发明授权

US10970305B2 Methods and systems of database cluster formation and management 有权
公开(公告)号：US10970305B2
公开(公告)日：2021-04-06
申请号：US15712124
申请日：2017-09-21
申请人： Venkatachary Srinivasan , Sunil Sayyaparaju , Ashish Shinde
发明人： Venkatachary Srinivasan , Sunil Sayyaparaju , Ashish Shinde
IPC分类号： G06F16/00 , G06F16/27 , G06F16/21
摘要： A computerized method useful for node cluster formation and management in a distributed database system includes the step of providing a set of database nodes in a database cluster. Each node of the set of database nodes comprises a cluster management module, a heartbeat module, and a globally unique node identifier. The cluster management module manages cluster membership by maintaining a succession list. The succession list comprises a list of all current members in the database cluster. The heartbeat module communicates a pulse message to every other node in the set of database nodes. The method includes the step of maintaining, with each heartbeat module of each database node, an adjacency list.

3. 发明授权

US09514168B2 Method and system of implementing a database index in shared memory 有权
标题翻译：在共享内存中实现数据库索引的方法和系统
公开(公告)号：US09514168B2
公开(公告)日：2016-12-06
申请号：US13897441
申请日：2013-05-20
申请人： Sunil Sayyaparaju , Andrew Gooding , Venkatachary Srinivasan
发明人： Sunil Sayyaparaju , Andrew Gooding , Venkatachary Srinivasan
IPC分类号： G06F17/30
CPC分类号： G06F17/30312 , G06F17/30165
摘要： In one exemplary embodiment, a method includes allocating an arena block of a shared memory of a database node server. The arena block is divided into one or more slots. The one or more slots include a discreet and constant area of memory within the arena block. Each slot is assigned a constant-memory address relative to an arena-block's shared memory address. The index is implemented as a red-black tree data structure. Each red-black tree node is mapped to a slot. Each red-black-tree node is provided a pointer to one or more neighbor nodes. The index stored in shared memory can be used during a ‘warm’ rebooting process.
摘要翻译：在一个示例性实施例中，一种方法包括分配数据库节点服务器的共享存储器的竞技场块。竞技场块被分成一个或多个槽。一个或多个插槽包括在竞技场块内的谨慎且恒定的存储区域。每个插槽都被分配一个相对于竞技场块的共享内存地址的常量存储器地址。该索引实现为红黑树数据结构。每个红黑树节点都映射到一个插槽。每个红黑树节点被提供指向一个或多个相邻节点的指针。存储在共享内存中的索引可以在“热”重新启动过程中使用。

4. 发明申请

US20140344530A1 METHOD AND SYSTEM OF IMPLEMENTING A DATABASE INDEX IN SHARED MEMORY 审中-公开
标题翻译：在共享存储器中实现数据库索引的方法和系统
公开(公告)号：US20140344530A1
公开(公告)日：2014-11-20
申请号：US13897441
申请日：2013-05-20
申请人： Sunil Sayyaparaju , Andrew Gooding , Venkatachary Srinivasan
发明人： Sunil Sayyaparaju , Andrew Gooding , Venkatachary Srinivasan
IPC分类号： G06F3/06
CPC分类号： G06F17/30312 , G06F17/30165
摘要： In one exemplary embodiment, a method includes allocating an arena block of a shared memory of a database node server. The arena block is divided into one or more slots. The one or more slots include a discreet and constant area of memory within the arena block. Each slot is assigned a constant-memory address relative to an arena-block's shared memory address. The index is implemented as a red-black tree data structure. Each red-black tree node is mapped to a slot. Each red-black-tree node is provided a pointer to one or more neighbor nodes. The index stored in shared memory can be used during a ‘warm’ rebooting process.
摘要翻译：在一个示例性实施例中，一种方法包括分配数据库节点服务器的共享存储器的竞技场块。竞技场块被分成一个或多个槽。一个或多个插槽包括在竞技场块内的谨慎且恒定的存储区域。每个插槽都被分配一个相对于竞技场块的共享内存地址的常量存储器地址。该索引实现为红黑树数据结构。每个红黑树节点都映射到一个插槽。每个红黑树节点被提供指向一个或多个相邻节点的指针。存储在共享内存中的索引可以在“热”重新启动过程中使用。

5. 发明授权

US09514208B2 Method and system of stateless data replication in a distributed database system 有权
标题翻译：分布式数据库系统中无状态数据复制的方法和系统
公开(公告)号：US09514208B2
公开(公告)日：2016-12-06
申请号：US14024181
申请日：2013-09-11
申请人： Vekatachary Srinivasan , Sunil Sayyaparaju , Rajkumar Iyer
发明人： Vekatachary Srinivasan , Sunil Sayyaparaju , Rajkumar Iyer
IPC分类号： G06F17/30
CPC分类号： G06F17/30575
摘要： In one exemplary embodiment, a method includes the step of executing, with at least one processor, a main database node server in a source-database node of a source-database cluster. The main database node server manages database server operations. The main database node server communicates a source-database cluster state and a specified server operation metadata to a data-shipping daemon. The specified server operation metadata, includes an information about server operation occurring on the source-database node. Another step includes executing a data-shipping daemon in the source-database node. The data-shipping daemon receives the specified server operation metadata and stores the specified server operation metadata in a digest log. The data log includes a file of the specified server operation metadata. The data-shipping daemon reads the digest log and communicate data referred to in the specified server operation metadata in the digest log to a destination database node in a destination database cluster.
摘要翻译：在一个示例性实施例中，一种方法包括以下步骤：利用至少一个处理器，在源数据库集群的源 - 数据库节点中执行主数据库节点服务器。主数据库节点服务器管理数据库服务器操作。主数据库节点服务器将源数据库集群状态和指定的服务器操作元数据传送到数据传送守护程序。指定的服务器操作元数据包括有关源数据库节点上发生的服务器操作的信息。另一步包括在源数据库节点中执行数据传送守护程序。数据传送守护程序接收指定的服务器操作元数据，并将指定的服务器操作元数据存储在摘要日志中。数据日志包括指定的服务器操作元数据的文件。数据传送守护程序读取摘要日志并将摘要日志中指定的服务器操作元数据中引用的数据传送到目标数据库集群中的目标数据库节点。

6. 发明申请

US20110161281A1 Distributed Transaction Management in a Distributed Shared Disk Cluster Environment 审中-公开
标题翻译：分布式共享磁盘集群环境中的分布式事务管理
公开(公告)号：US20110161281A1
公开(公告)日：2011-06-30
申请号：US12650451
申请日：2009-12-30
申请人： Sunil Sayyaparaju , Amit Anantrao Pathak
发明人： Sunil Sayyaparaju , Amit Anantrao Pathak
IPC分类号： G06F17/00 , G06F12/00
CPC分类号： G06F16/2379
摘要： Systems, methods, computer program product embodiments are provided for maintaining transaction consistency for distributed transactions in a distributed shared disk cluster environment. An embodiment includes utilizing broadcast messaging among the plurality of instances to identify at least one of a transaction and a transaction owner instance for a transaction request. Execution of the transaction occurs on an owner instance as found based on a response to the broadcast messaging.
摘要翻译：提供了系统，方法，计算机程序产品实施例，用于维护分布式共享磁盘集群环境中分布式事务的事务一致性。一个实施例包括利用多个实例之间的广播消息传送来识别事务请求的事务和事务所有者实例中的至少一个。基于对广播消息传递的响应，在所有者实例上执行事务。

7. 发明授权

US10445433B2 Methods and systems of query engines and secondary indexes implemented in a distributed database 有权
公开(公告)号：US10445433B2
公开(公告)日：2019-10-15
申请号：US14697617
申请日：2015-04-27
申请人： Venkatachary Srinivasan , Rajkumar Iyer , Sunil Sayyaparaju
发明人： Venkatachary Srinivasan , Rajkumar Iyer , Sunil Sayyaparaju
IPC分类号： G06F17/30
摘要： In one embodiment, a computer-implemented method of a distributed database system included the step of providing a query processor to receive a query request and to chart out a query execution plan based on the query request. The method includes the step of providing a data generator to generate a digest list based on the query request, wherein the list of digests comprises each stream or filter applied in servicing the query request. The method includes the step of providing a query engine to obtain a digest list from a multiple-data source as a result of the query request and to filter the digest list. The method includes the step of providing a query worker to obtain the query request and process the query request based on a type of the query request. The method includes the step of providing one or more query worker threads to perform an asynchronous I/O operation for the query request.

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