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    DYNAMIC HIERARCHY BASED MESSAGE DISTRIBUTION
    1.
    发明申请
    DYNAMIC HIERARCHY BASED MESSAGE DISTRIBUTION 审中-公开

    公开(公告)号：US20180020046A1

    公开(公告)日：2018-01-18

    申请号：US15211675

    申请日：2016-07-15

    Applicant: SAP SE

    Inventor： Florian Foebel ,  Bjoern Friedmann ,  Boris Gruschko ,  Martin Strenge ,  Christian Mohr

    IPC: H04L29/08 ,  H04L12/879

    CPC classification number: H04L49/901 ,  G06F17/30575 ,  H04L67/327

    Abstract: In one respect, there is provided a distributed database system. The distributed database system can include a plurality of nodes. A first node of the plurality of nodes can be configured to: group the plurality of nodes into at least a first cluster; select a second node to act as a gateway node for the first cluster; determine that at least one recipient node of a message is included in the first cluster; and route the message to the recipient node by at least sending the message to the second node. Related methods and articles of manufacture are also disclosed.

    Dynamic hierarchy based message distribution
    6.
    发明授权
    Dynamic hierarchy based message distribution 有权

    公开(公告)号：US10305824B2

    公开(公告)日：2019-05-28

    申请号：US15211675

    申请日：2016-07-15

    Applicant: SAP SE

    Inventor： Florian Foebel ,  Bjoern Friedmann ,  Boris Gruschko ,  Martin Strenge ,  Christian Mohr

    IPC: H04L12/879 ,  H04L29/08 ,  G06F16/27

    Abstract: A distributed database system can include a plurality of nodes. In order to execute a query at the distributed database system, one or more of the plurality of nodes can perform operations included in an execution plan for the query. A first node of the plurality of nodes can group the plurality of nodes into at least a first cluster. The first node can further select a second node to act as a gateway node for the first cluster. The first node can determine that at least one recipient node of a message is included in the first cluster and route the message to the recipient node by at least sending the message to the second node. Related methods and articles of manufacture are also disclosed.

    Write order preserving data stream consumption
    7.
    发明授权
    Write order preserving data stream consumption 有权

    公开(公告)号：US10089034B2

    公开(公告)日：2018-10-02

    申请号：US15203410

    申请日：2016-07-06

    Applicant: SAP SE

    Inventor： Boris Gruschko ,  Christian Mohr ,  Martin Strenge ,  Florian Foebel ,  Bjoern Friedmann

    IPC: G06F3/06 ,  H04L29/06 ,  H04L29/08

    Abstract: A system, a method, and a computer program product for scalable processes for write-order preserving data stream consumption. A data partition in a plurality of data partitions of data stream is selected based on a request received from a client processing node. The plurality of data partitions are distributed among a plurality of broker nodes in a distributed messaging system. A broker node in the plurality of broker nodes hosting the selected data partition is identified. The identified broker node provides the selected data partition to the client processing node for performing at least one function.

    METADATA VERSIONING IN A DISTRIBUTED DATABASE
    8.
    发明申请
    METADATA VERSIONING IN A DISTRIBUTED DATABASE 审中-公开

    公开(公告)号：US20180060373A1

    公开(公告)日：2018-03-01

    申请号：US15253750

    申请日：2016-08-31

    Applicant: SAP SE

    Inventor： Florian Foebel ,  Bjoern Friedmann ,  Boris Gruschko ,  Martin Strenge ,  Christian Mohr

    IPC: G06F17/30

    CPC classification number: G06F16/213 ,  G06F16/275

    Abstract: In one respect, there is provided a distributed database system. The distributed database system can include a plurality of nodes and a plurality of optimizers. A first optimizer of the plurality of optimizers can be configured to: receive, from a client, a command; generate, based at least in part on global metadata cached by the first optimizer, an execution plan for fulfilling the command that includes one or more tasks to be performed by at least a first node of the plurality of nodes; determine that at least one task of the one or more tasks are not successfully performed by the first node; and in response to determining that at least one task of the one or more tasks are not successfully performed by the first node, updating the cached global metadata at the first optimizer.

    Handling failovers at one or more nodes in a distributed database system
    10.
    发明授权
    Handling failovers at one or more nodes in a distributed database system 有权

    公开(公告)号：US10719353B2

    公开(公告)日：2020-07-21

    申请号：US15274848

    申请日：2016-09-23

    Applicant: SAP SE

    Inventor： Florian Foebel ,  Bjoern Friedmann ,  Boris Gruschko ,  Martin Strenge ,  Christian Mohr

    IPC: G06F9/46 ,  G06F9/48 ,  G06F11/14 ,  G06F16/2455 ,  G06F11/20

    Abstract: In one respect, there is provided a distributed database system that includes a first local scheduler node and a second local scheduler node. The first local scheduler node can be configured to coordinate a performance of a first task and a second task by a first worker node associated with the first local scheduler node. The second local scheduler node can be configured to respond to a defect at the first local scheduler node by at least: collecting, from the first worker node, a log indicating one or more tasks completed by the first worker node prior to the defect at the first local scheduler node; determining, based at least on the log, that the first worker node has completed the first task but not the second task; and coordinating a performance of the second task by the first worker node. Related methods and articles of manufacture are also provided.

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