Patents by Inventor Lakshmi N. Pallikila
Lakshmi N. Pallikila has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11640410Abstract: Data replication groups may be used to store data in a distributed computing environment. The data replication groups may include a set of nodes executing a consensus protocol to maintain data durably. The nodes of the data replication groups may generate logs containing information corresponding committed operations performed by the nodes. These logs may be collected and processed to obtain useful information corresponding to the operation of the data replication group. Furthermore, this processed information may be provided in the form of a stream to enable event driven operations corresponding to the logs.Type: GrantFiled: December 2, 2015Date of Patent: May 2, 2023Assignee: Amazon Technologies, Inc.Inventors: Matthew Joseph Zulak, Tao Chen, Fan Ping, Lakshmi N. Pallikila, Shobha Agrawal, Marc John Brooker
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Patent number: 10924543Abstract: Data replication groups may be used to store data in a distributed computing environment. The data replication groups may include a set of nodes executing a consensus protocol to maintain data durably. The nodes may be executed by one or more host computer systems. In order to avoid failure of the data replication groups as safe deployment strategy is provided. The one or more host computer systems may be assigned to deployment groups where the number of hosts assigned to the deployment groups host less than a quorum of the nodes of a particular data replication group.Type: GrantFiled: December 18, 2015Date of Patent: February 16, 2021Assignee: Amazon Technologies, Inc.Inventors: Tao Chen, Marc John Brooker, Divya Ashok Kumar Jain, Lakshmi N. Pallikila, Shobha Agrawal
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Patent number: 10733201Abstract: Data replication groups may be used to store data in a distributed computing environment. The data replication groups may include a set of nodes executing a consensus protocol to maintain data durably. In order to increase the speed of provisioning, a data replication may be provision with less than the total number of nodes to be included in the group. Once an initial set of nodes have been provisioned and are implementing a consensus protocol, the data replication group may begin to receive traffic. Furthermore, new nodes may be added to the group until the total number of nodes for the group has been reached.Type: GrantFiled: November 30, 2015Date of Patent: August 4, 2020Assignee: Amazon Technologies, Inc.Inventors: Tao Chen, Madhuvanesh Parthasarathy, Shobha Agrawal, Fan Ping, Divya Ashok Kumar Jain, Marc John Brooker, Matthew Joseph Zulak, Lakshmi N. Pallikila
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Patent number: 10565227Abstract: Data replication groups may be used to store data in a distributed computing environment. A data replication group may include a set of nodes executing a consensus protocol to maintain data durably. In order to increase efficiency and performance of the data replication, a particular node of the data replication group may be assigned the role of master node. The role of master node may be lease in accordance with a consensus protocol. If the lease is not renewed within an interval of time election/selection of a new master node may be commenced.Type: GrantFiled: August 31, 2016Date of Patent: February 18, 2020Assignee: Amazon Technologies, Inc.Inventors: Tao Chen, Marc John Brooker, Divya Ashok Kumar Jain, Norbert Paul Kusters, Fan Ping, Lakshmi N. Pallikila
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Patent number: 10567499Abstract: Data replication groups may be used to store data in a distributed computing environment. The data replication groups may include a set of nodes executing a consensus protocol to maintain data durably. During the execution of the set of nodes various nodes may become stale or otherwise obtain a state that is inconsistent with at least one other node of the data replication group. A catch up algorithm may be employed in which a set of teachers is initialized, the various node which may be stale may select a teacher from the set of teachers and perform learning operations. This process may be repeated until the state of the various nodes is current with at least one other node of the data replication group.Type: GrantFiled: December 2, 2015Date of Patent: February 18, 2020Assignee: Amazon Technologies, Inc.Inventors: Tao Chen, Matthew Joseph Zulak, Lakshmi N. Pallikila, Shobha Agrawal, Fan Ping, Divya Ashok Kumar Jain
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Patent number: 10489230Abstract: Data replication groups may be used to store data in a distributed computing environment. The data replication groups may include a set of nodes executing a consensus protocol to maintain data durably. In order to monitor and debug the operation of the data replication group a chaining mechanism may be utilized during log creation by the set of nodes of the data replication group. The chaining mechanism may cause entries in the log to indicate an operation being performed and an operation performed immediately prior to the operation being performed. In various embodiments, an outside observer receives the logs and checks the logs for errors indicated by the chaining mechanism.Type: GrantFiled: December 2, 2015Date of Patent: November 26, 2019Assignee: Amazon Technologies, Inc.Inventors: Tao Chen, Matthew Joseph Zulak, Lakshmi N. Pallikila, Shobha Agrawal, Fan Ping, Divya Ashok Kumar Jain
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Patent number: 10452681Abstract: Data replication groups may be used to store data in a distributed computing environment. The data replication groups may include a set of nodes executing a consensus protocol to maintain data durably. In order to increase the speed of provisioning, a pool of data replication groups may be maintained. When a request is received a data replication group may be selected from the pool, removed from the pool, and associated with the request. Furthermore, a replacement data replication group may be provisioned and added to the pool.Type: GrantFiled: November 30, 2015Date of Patent: October 22, 2019Assignee: Amazon Technologies, Inc.Inventors: Tao Chen, Madhuvanesh Parthasarathy, Shobha Agrawal, Fan Ping, Divya Ashok Kumar Jain, Marc John Brooker, Matthew Joseph Zulak, Lakshmi N. Pallikila
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Patent number: 10402377Abstract: A computing system recovers volumes in a distributed computing environment while reducing downtime of storage servers. In an embodiment, a storage server contacts a control plane after a storage failure has occurred. If the storage server hosts an authoritative copy of an offline volume, the storage server is requested to restore the volume. Non-authoritative volumes are removed from the storage server and the storage server provides read access to the restored volume while resuming storage services.Type: GrantFiled: July 29, 2016Date of Patent: September 3, 2019Assignee: Amazon Technologies, Inc.Inventors: Danny Wei, Lakshmi N. Pallikila, James Andrew Trenton Lipscomb, Yan V. Leshinsky, Tarun Goyal, Kerry Q. Lee
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Patent number: 10387450Abstract: Data replication groups may be used to store data in a distributed computing environment. A data replication group may include a set of nodes executing a consensus protocol to maintain data durably. In order to increase efficiency and performance of the data replication, a particular node of the data replication group may be assigned the role of master node. The role of master node may be lease in accordance with a consensus protocol. If the lease is not renewed within an interval of time election/selection of a new master node may be commenced.Type: GrantFiled: August 31, 2016Date of Patent: August 20, 2019Assignee: Amazon Technologies, Inc.Inventors: Tao Chen, Marc John Brooker, Divya Ashok Kumar Jain, Norbert Paul Kusters, Fan Ping, Lakshmi N. Pallikila
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Patent number: 9405815Abstract: A computing system recovers volumes in a distributed computing environment while reducing downtime of storage servers. In an embodiment, a storage server contacts a control plane after a storage failure has occurred. If the storage server hosts an authoritative copy of an offline volume, the storage server is requested to restore the volume. Non-authoritative volumes are removed from the storage server and the storage server provides read access to the restored volume while resuming storage services.Type: GrantFiled: October 2, 2012Date of Patent: August 2, 2016Assignee: Amazon Technologies, Inc.Inventors: Danny Wei, Lakshmi N. Pallikila, James Andrew Trenton Lipscomb, Yan V. Leshinsky, Tarun Goyal, Kerry Q. Lee