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公开(公告)号：US10824622B2
公开(公告)日：2020-11-03
申请号：US14189433
申请日：2014-02-25
Applicant: SAP SE
Inventor： Anisoara Nica , Anil Kumar Goel
IPC: G06F16/2453
Abstract: A system, computer-implemented method, and a computer-readable storage medium for determining estimations to statistical questions. Data statistics used in evaluating estimations to statistical questions are gathered from multiple sources in a database management system. A statistical question comprising, for example, cardinality estimations is received, wherein the question is posed by different database components, such as query optimizer, or execution engine. Estimation for the statistical question is computed, where the estimation is based on multiple data statistics and without using the data referred to in the question.
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公开(公告)号：US10671572B2
公开(公告)日：2020-06-02
申请号：US15182030
申请日：2016-06-14
Applicant: SAP SE
Inventor： Nathan Auch , Scott MacLean , Peter Bumbulis , Jeffrey Pound , Anil Kumar Goel
Abstract: A system includes reception of a first write request from a client including a first key and a first one or more stream, payload pairs associated with the first key, copying of the first key and the first one or more stream, payload pairs to a first buffer of a volatile memory, storage of data of the first buffer in one or more blocks of a raw block non-volatile memory device, providing of the first buffer to a stream store server, reception of the first buffer at the stream store server, adding of the first key and the first one or more stream, payload pairs to a second buffer of the volatile memory, in key-order, storage of the data of the second buffer in a filesystem storage device, according to stream, and transmission of an indication of the durability of the key to the tail store server.
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公开(公告)号：US10346387B2
公开(公告)日：2019-07-09
申请号：US15180720
申请日：2016-06-13
Applicant: SAP SE
Inventor： Peter Bumbulis , Jeffrey Pound , Nathan Auch , Anil Kumar Goel , Matthias Ringwald , Thomas Bodner , Scott MacLean
Abstract: A method includes a primary storage unit receiving a first write request including a first key and a first value; persisting the first value in a first non-volatile memory in association with the first key; broadcasting the first write request and a first set of globally-durable keys to secondary storage units; receiving, from the secondary storage units, an acknowledgement of the first write request and a first set of locally-durable keys, each of the first sets of locally-durable keys including the first key; the primary storage unit receiving a second write request including a second key and a second value; persisting the second value in the first non-volatile memory in association with the second key; and broadcasting the second write request and a second set of globally-durable keys to the secondary storage units, the second set of locally-durable keys including the first key. A system is also disclosed.
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公开(公告)号：US20180165343A1
公开(公告)日：2018-06-14
申请号：US15373844
申请日：2016-12-09
Applicant: SAP SE
Inventor： Hua Fan , Jeffrey Pound , Peter Bumbulis , Anil Kumar Goel , Scott MacLean , Nathan Auch , Eric Garber
CPC classification number: G06F16/275 , G06F3/067 , G06F16/2358 , G06F16/2365 , G06F16/273 , H04L67/1002 , H04W4/06
Abstract: Disclosed herein are system, method, and computer program product embodiments for quorum-based replication of data records. In one embodiment, a read request for reading a record is received from a user node on a replica node of a cluster of replica nodes. The record is then determined not committed on the replica node. In response to the determination, an update message indicative of whether the number of replica nodes on which the record is durable exceeds a threshold is received on the replica node. In response to the number of replica nodes exceeds the threshold, a value of the record on the replica node is transmitted to the user node.
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5.发明申请公开(公告)号：US20160048792A1
公开(公告)日：2016-02-18
申请号：US14462522
申请日：2014-08-18
Applicant: SAP SE
Inventor： Sheldon J. Finkelstein , Anil Kumar Goel
IPC: G06Q10/06
CPC classification number: G06Q10/06375
Abstract: A system, medium, and method including receiving a request to initiate a hypothetical transaction at a first logical time including changes made to a actual table and storage of the actual table being represented by a main storage data structure and a delta storage data structure; generating a hypothetical delta storage data structure to include the changes made by the hypothetical transaction, the hypothetical delta storage data structure being separate and distinct from the delta storage data structure; and applying the changes made by the hypothetical transaction included in the hypothetical delta storage data structure to the actual table to obtain a hypothetical result data structure that includes the data of the actual table existing at the first logical time and any changes made by the hypothetical transaction.
Abstract translation: 一种系统，介质和方法，包括在第一逻辑时间接收发起假设事务的请求，包括由主存储数据结构和增量存储数据结构表示的实际表的变化和实际表的存储; 产生假设的增量存储数据结构以包括由假设事务所做的改变，假设的增量存储数据结构与增量存储数据结构是分开的，不同的; 并将假设的delta存储数据结构中包含的假设事务所做的更改应用于实际表，以获得假设结果数据结构，其包括在第一逻辑时间存在的实际表的数据以及由假设交易 。
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Patent Agency Ranking
公开(公告)号：US20170357667A1
公开(公告)日：2017-12-14
申请号：US15182030
申请日：2016-06-14
Applicant: SAP SE
Inventor： Nathan Auch , Scott MacLean , Peter Bumbulis , Jeffrey Pound , Anil Kumar Goel
IPC: G06F17/30
Abstract: A system includes reception of a first write request from a client including a first key and a first one or more stream, payload pairs associated with the first key, copying of the first key and the first one or more stream, payload pairs to a first buffer of a volatile memory, storage of data of the first buffer in one or more blocks of a raw block non-volatile memory device, providing of the first buffer to a stream store server, reception of the first buffer at the stream store server, adding of the first key and the first one or more stream, payload pairs to a second buffer of the volatile memory, in key-order, storage of the data of the second buffer in a filesystem storage device, according to stream, and transmission of an indication of the durability of the key to the tail store server.
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公开(公告)号：US11537578B2
公开(公告)日：2022-12-27
申请号：US15958663
申请日：2018-04-20
Applicant: SAP SE
Inventor： Colin Florendo , Carsten Thiel , Ivan Schreter , Mihnea Andrei , Anil Kumar Goel
IPC: G06F16/22
Abstract: A request for an entry of a dictionary having multiple dictionary blocks may be received, where the dictionary stores string values associated with corresponding value identifiers (IDs) for dictionary compression. One of the dictionary blocks may be selectively loaded into memory, and the dictionary block that has been loaded into memory may be searched. A value ID directory may be constructed in memory, where the value ID directory includes last value IDs for the dictionary blocks, and each of the last value IDs is mapped to an index of one of the dictionary blocks that includes a string value for that last value ID. A separator directory may also be constructed in memory, where the separator directory includes separators for the dictionary blocks, and each of the separators is mapped to an index of one of the dictionary blocks that includes a string value for that separator.
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公开(公告)号：US10366106B2
公开(公告)日：2019-07-30
申请号：US15373844
申请日：2016-12-09
Applicant: SAP SE
Inventor： Hua Fan , Jeffrey Pound , Peter Bumbulis , Anil Kumar Goel , Scott MacLean , Nathan Auch , Eric Garber
Abstract: Disclosed herein are system, method, and computer program product embodiments for quorum-based replication of data records. In one embodiment, a read request for reading a record is received from a user node on a replica node of a cluster of replica nodes. The record is then determined not committed on the replica node. In response to the determination, an update message indicative of whether the number of replica nodes on which the record is durable exceeds a threshold is received on the replica node. In response to the number of replica nodes exceeds the threshold, a value of the record on the replica node is transmitted to the user node.
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公开(公告)号：US10360145B2
公开(公告)日：2019-07-23
申请号：US15180816
申请日：2016-06-13
Applicant: SAP SE
Inventor： Jeffrey Pound , Nathan Auch , Peter Bumbulis , Anil Kumar Goel , Scott MacLean , Eric Garber
Abstract: A system includes writing of log data in chunks over a first range of heap log sequence positions of a heap log stored in the non-volatile memory system, and writing of a heap anchor marker in a first anchor stream of a transaction log stored in the non-volatile memory system, at a first transaction log sequence position of the transaction log, wherein the first anchor stream is associated with a first stream of the transaction log, and the heap anchor marker identifies the first range of heap log sequence positions of the heap log.
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10.发明授权公开(公告)号：US10042886B2
公开(公告)日：2018-08-07
申请号：US14816681
申请日：2015-08-03
Applicant: SAP SE
Inventor： Pooya Saadat-Panah , Anisoara Nica , Nathan Auch , Peter Bumbulis , Anil Kumar Goel , Jeffrey Pound
Abstract: A method and system, the system including a plurality of machines each having a processor and a main memory component; a shared distributed storage facility storing a set of data and accessible by the plurality of machines over a communication network; a controller to select, in response to a state of a query execution plan comprising a plurality of executable jobs for the set of data, which one of a set of scheduling algorithms to execute; an execution engine to execute the selected scheduling algorithm to determine, for each job in the plurality of jobs, which server to schedule to execute the respective job; and providing an indication of the scheduling of the servers determined to be schedules for the execution of the jobs.
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