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71. 发明授权

US07120776B2 Method and apparatus for efficient runtime memory access in a database 有权
标题翻译：用于在数据库中高效运行时存储器访问的方法和装置
公开(公告)号：US07120776B2
公开(公告)日：2006-10-10
申请号：US10771573
申请日：2004-02-03
申请人： Kumar Rajamani , Namit Jain
发明人： Kumar Rajamani , Namit Jain
IPC分类号： G06F12/00
CPC分类号： G06F17/3048
摘要： A method and apparatus for efficient runtime memory access in a database is provided. A buffer pool is pre-allocated in cache. Buffers in the buffer pool are sized to accommodate average case queries and frequently executed queries. Buffers from the buffer pool are allocated to query working sets during runtime to reduce cache misses.
摘要翻译：提供了一种用于在数据库中高效运行时存储器访问的方法和装置。缓冲池预先分配在缓存中。缓冲池中的缓冲区的大小适合平均情况查询和经常执行的查询。缓冲池中的缓冲区被分配给运行时查询工作集以减少高速缓存未命中。

72. 发明申请

US20050192935A1 Method and apparatus for efficient runtime memory access in a database 有权
标题翻译：用于在数据库中高效运行时存储器访问的方法和装置
公开(公告)号：US20050192935A1
公开(公告)日：2005-09-01
申请号：US10771573
申请日：2004-02-03
申请人： Kumar Rajamani , Namit Jain
发明人： Kumar Rajamani , Namit Jain
IPC分类号： G06F7/00 , G06F17/30
CPC分类号： G06F17/3048
摘要： A method and apparatus for efficient runtime memory access in a database is provided. A buffer pool is pre-allocated in cache. Buffers in the buffer pool are sized to accommodate average case queries and frequently executed queries. Buffers from the buffer pool are allocated to query working sets during runtime to reduce cache misses.
摘要翻译：提供了一种用于在数据库中高效运行时存储器访问的方法和装置。缓冲池预先分配在缓存中。缓冲池中的缓冲区的大小适合平均情况查询和经常执行的查询。缓冲池中的缓冲区被分配给运行时查询工作集以减少高速缓存未命中。

73. 发明授权

US06892205B1 System and method for pre-compiling a source cursor into a target library cache 有权
标题翻译：将源光标预编译为目标库缓存的系统和方法
公开(公告)号：US06892205B1
公开(公告)日：2005-05-10
申请号：US10086842
申请日：2002-02-28
申请人： Carol L. Colrain , Namit Jain , Juan R. Loaiza
发明人： Carol L. Colrain , Namit Jain , Juan R. Loaiza
IPC分类号： G06F17/00 , G06F17/30
CPC分类号： G06F17/3048 , G06F17/30433 , Y10S707/99934 , Y10S707/99953
摘要： A system and method for enabling a second database instance to more quickly process a request to execute a database statement that has previously been executed by a first database instance is described. In one embodiment, the method involves sending the database statement from the first database instance to the second database instance, and generating by the second database instance one or more structures needed to prepare the statement for execution, such as a parse tree and an execution plan for the statement. If at some point in the future, the second database instance receives a request to execute the same statement, the above structures can be used for execution, thereby eliminating the need for one or more potentially time-consuming operations, such as generation of a parse tree or execution plan for the statement.
摘要翻译：描述了使得第二数据库实例能够更快速地处理执行先前由第一数据库实例执行的数据库语句的请求的系统和方法。在一个实施例中，该方法涉及将数据库语句从第一数据库实例发送到第二数据库实例，并且由第二数据库实例生成准备执行语句所需的一个或多个结构，诸如解析树和执行计划为声明。如果在将来的某个时刻，第二个数据库实例接收到执行相同语句的请求，上述结构可以用于执行，从而不需要一个或多个潜在的耗时的操作，比如生成解析树或执行计划。

74. 发明授权

US08935293B2 Framework for dynamically generating tuple and page classes 有权
标题翻译：动态生成元组和页面类的框架
公开(公告)号：US08935293B2
公开(公告)日：2015-01-13
申请号：US12396464
申请日：2009-03-02
申请人： Hoyong Park , Namit Jain , Anand Srinivasan , Shailendra Mishra
发明人： Hoyong Park , Namit Jain , Anand Srinivasan , Shailendra Mishra
IPC分类号： G06F7/00 , G06F17/30 , G06F9/445 , G06F9/455
CPC分类号： G06F9/44521 , G06F9/45504
摘要： Techniques for reducing the memory used for processing events received in a data stream are provided. This may be achieved by reducing the memory required for storing tuples. A method for processing a data stream includes receiving a tuple and determining a tuple specification that defines a layout of the tuple. The layout identifies one or more data types that are included in the tuple. A tuple class corresponding to the tuple specification may be determined. A tuple object based on the tuple class is instantiated, and during runtime of the processing system. The tuple object is stored in a memory.
摘要翻译：提供了用于减少用于处理在数据流中接收的事件的存储器的技术。这可以通过减少存储元组所需的内存来实现。一种用于处理数据流的方法包括接收元组并确定定义元组的布局的元组规范。布局标识包含在元组中的一个或多个数据类型。可以确定对应于元组规范的元组类。基于元组类的元组对象被实例化，并且在处理系统的运行期间。元组对象存储在内存中。

75. 发明申请

US20140229422A1 HIVE TABLE LINKS 审中-公开
标题翻译： HIVE表链接
公开(公告)号：US20140229422A1
公开(公告)日：2014-08-14
申请号：US13766512
申请日：2013-02-13
申请人： Namit Jain , Raghotham Sathyanarayana Murthy , Sambavi Muthukrishnan , Bhushan Mandhani
发明人： Namit Jain , Raghotham Sathyanarayana Murthy , Sambavi Muthukrishnan , Bhushan Mandhani
IPC分类号： G06F17/30
CPC分类号： G06F16/283 , G06F16/21 , G06F16/25 , G06F16/256 , G06F16/972
摘要： System and method for virtual data warehouses having table link capabilities are provided. In particular, some embodiments include a plurality of virtual data warehouses built on top of a data center running Apache Hive. Each virtual data warehouse can be modeled as a database and manage data in forms of database tables. The virtual data warehouse can include links which import tables from other virtual data warehouses by reference. Each link may contain partition metadata for the table partitions by dates of the source table and retention metadata to declare the needed retention time period for the partitions of the source table. The links can be dynamic and update when the corresponding source table receives new partitions or drops partitions. When a virtual data warehouse is migrated to another data center, the system can retain necessary table partitions to remain on the current data center based on the partition metadata and retention metadata of the links.
摘要翻译：提供了具有表链接功能的虚拟数据仓库的系统和方法。特别地，一些实施例包括建立在运行Apache Hive的数据中心之上的多个虚拟数据仓库。每个虚拟数据仓库都可以建模为数据库，并以数据库表的形式管理数据。虚拟数据仓库可以包括通过引用从其他虚拟数据仓库导入表的链接。根据源表和保留元数据的日期，每个链接可能包含表分区的分区元数据，以声明源表的分区所需的保留时间段。当相应的源表接收到新的分区或删除分区时，链接可以是动态的并进行更新。当虚拟数据仓库迁移到另一个数据中心时，系统可以根据链路的分区元数据和保留元数据，保留必要的表分区以保留在当前数据中心上。

76. 发明授权

US08589436B2 Techniques for performing regular expression-based pattern matching in data streams 有权
标题翻译：在数据流中执行基于正则表达式的模式匹配的技术
公开(公告)号：US08589436B2
公开(公告)日：2013-11-19
申请号：US12548222
申请日：2009-08-26
申请人： Anand Srinivasan , Rakesh Komuravelli , Namit Jain , Shailendra Mishra
发明人： Anand Srinivasan , Rakesh Komuravelli , Namit Jain , Shailendra Mishra
IPC分类号： G06F17/30
CPC分类号： G06K9/62
摘要： Techniques for detecting patterns in one or more data streams. A pattern to be detected may be specified using a regular expression. Events received in a data stream are processed during runtime to detect occurrences of the specified pattern in the data stream.
摘要翻译：用于检测一个或多个数据流中的模式的技术。可以使用正则表达式来指定要检测的模式。在运行期间处理在数据流中接收的事件，以检测数据流中指定模式的出现。

77. 发明授权

US08543558B2 Support for user defined functions in a data stream management system 有权
标题翻译：支持数据流管理系统中用户定义的功能
公开(公告)号：US08543558B2
公开(公告)日：2013-09-24
申请号：US13244272
申请日：2011-09-23
申请人： Anand Srinivasan , Namit Jain , Shailendra Kumar Mishra
发明人： Anand Srinivasan , Namit Jain , Shailendra Kumar Mishra
IPC分类号： G06F17/00 , G06F17/30
CPC分类号： G06F8/20
摘要： A data stream management system (DSMS) is designed to support a new user-defined function, by creating and using at least two structures as follows. A first structure (“metadata entry”) is created in response to a command for creation of the new function, and maps a single instance of a class to the function's name. A second structure is created with creation of an operator on receipt of each new continuous query that uses the new function. The second structure (“operator specific data structure”) contains a path to the newly-created instance, which path is obtained by looking up the first structure. Additional second structures are created on receipt of additional continuous queries which use the new function, but all second structures contain the same path. All continuous queries use the same instance. Repeated use of a single instance to compile and execute multiple queries eliminates repeated instantiation of the same function.
摘要翻译：数据流管理系统（DSMS）旨在通过如下创建和使用至少两个结构来支持新的用户定义的功能。响应于用于创建新功能的命令创建第一个结构（“元数据条目”），并将类的单个实例映射到函数的名称。在接收到使用新功能的每个新的连续查询时，创建第二个结构。第二个结构（“运算符特定数据结构”）包含新创建的实例的路径，通过查找第一个结构获取哪个路径。附加的第二个结构是在接收到使用新功能的附加连续查询时创建的，但所有第二个结构都包含相同的路径。所有连续查询使用相同的实例。重复使用单个实例来编译和执行多个查询消除了相同功能的重复实例化。

78. 发明授权

US08521867B2 Support for incrementally processing user defined aggregations in a data stream management system 有权
公开(公告)号：US08521867B2
公开(公告)日：2013-08-27
申请号：US11977437
申请日：2007-10-20
申请人： Anand Srinivasan , Namit Jain , Shailendra Kumar Mishra
发明人： Anand Srinivasan , Namit Jain , Shailendra Kumar Mishra
IPC分类号： G06F15/173 , G06F17/30 , G06F3/00
CPC分类号： G06F17/30412 , G06F17/30516
摘要： A computer is programmed to accept a command for creation of a new aggregation defined by a user to process data incrementally, one tuple at a time. One or more incremental function(s) in a set of instructions written by the user to implement the new aggregation maintain(s) locally any information that is to be passed between successive invocations, to support computing the aggregation for a given set of tuples as a whole. The user writes a set of instructions to perform the aggregation incrementally, including a plus function which is repeatedly invoked, only once, for each addition to a window of a message. The user also writes a minus function to be invoked with the message, to return the value of incremental aggregation over the window after removal of the message. In such embodiments, the computer does not maintain copies of messages in the window for use by aggregation function(s).

79. 发明授权

US08386466B2 Log visualization tool for a data stream processing server 有权
标题翻译：用于数据流处理服务器的日志可视化工具
公开(公告)号：US08386466B2
公开(公告)日：2013-02-26
申请号：US12534398
申请日：2009-08-03
申请人： Hoyong Park , Rakesh Komuravelli , Namit Jain , Anand Srinivasan , Shailendra Mishra
发明人： Hoyong Park , Rakesh Komuravelli , Namit Jain , Anand Srinivasan , Shailendra Mishra
IPC分类号： G06F7/00 , G06F17/00 , G06F17/30
CPC分类号： G06F17/30368
摘要： Techniques for logging data pertaining to the operation of a data stream processing server. In one set of embodiments, logging configuration information can be received specifying a functional area of a data stream processing server to be logged. Based on the logging configuration information, logging can be dynamically enabled for objects associated with the functional area that are instantiated by the data stream processing server, and logging can be dynamically disabled for objects associated with the functional area that are discarded (or no longer used) by the data stream processing server. In another set of embodiments, a tool can be provided for visualizing the data logged by the data stream processing server.
摘要翻译：用于记录与数据流处理服务器的操作有关的数据的技术。在一组实施例中，可以接收指定要记录的数据流处理服务器的功能区域的记录配置信息。基于记录配置信息，可以对与数据流处理服务器实例化的功能区域相关联的对象动态启用日志记录，并且可以对与丢弃（或不再使用的功能区域）相关联的对象动态禁用日志记录）由数据流处理服务器。在另一组实施例中，可以提供用于可视化由数据流处理服务器记录的数据的工具。

80. 发明授权

US08200658B2 System and method for providing highly available database performance 有权
标题翻译：提供高可用数据库性能的系统和方法
公开(公告)号：US08200658B2
公开(公告)日：2012-06-12
申请号：US13158808
申请日：2011-06-13
申请人： Carol L. Colrain , Namit Jain , Juan R. Loaiza
发明人： Carol L. Colrain , Namit Jain , Juan R. Loaiza
IPC分类号： G06F17/30
CPC分类号： G06F17/3048 , G06F17/30433 , Y10S707/99934 , Y10S707/99953
摘要： A system and method for enabling a second database instance to more quickly process a request to execute a database statement that has previously been executed by a first database instance is described. In one embodiment, the method involves sending the database statement from the first database instance to the second database instance, and generating by the second database instance one or more structures needed to prepare the statement for execution, such as a parse tree and an execution plan for the statement. If at some point in the future, the second database instance receives a request to execute the same statement, the above structures can be used for execution, thereby eliminating the need for one or more potentially time-consuming operations, such as generation of a parse tree or execution plan for the statement.
摘要翻译：描述了使得第二数据库实例能够更快速地处理执行先前由第一数据库实例执行的数据库语句的请求的系统和方法。在一个实施例中，该方法涉及将数据库语句从第一数据库实例发送到第二数据库实例，并且由第二数据库实例生成准备执行语句所需的一个或多个结构，诸如解析树和执行计划为声明。如果在将来的某个时刻，第二个数据库实例接收到执行相同语句的请求，上述结构可以用于执行，从而不需要一个或多个潜在的耗时的操作，比如生成解析树或执行计划。

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