Patents by Inventor Ioannis PAPAPANAGIOTOU

Ioannis PAPAPANAGIOTOU 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).

  • Patent number: 11860849
    Abstract: Various embodiments set forth systems and techniques for concurrent log and dump processing. The techniques include selecting, from a datastore, a chunk comprising one or more rows of data; comparing the one or more rows of data in the chunk with a first set of log events in a change log associated with the datastore, wherein each log event included in the first set of log events occurs after a first log event in the change log and prior to a second log event in the change log; selecting, based on the comparison, one or more non-conflicting rows in the chunk; and transmitting, to an output, one or more log events associated with the one or more non-conflicting rows in the chunk prior to processing a second set of log events in the change log, wherein the second set of log events occur after the second log event.
    Type: Grant
    Filed: May 16, 2022
    Date of Patent: January 2, 2024
    Assignee: NETFLIX, INC.
    Inventors: Andreas Andreakis, Ioannis Papapanagiotou
  • Patent number: 11829500
    Abstract: Various embodiments of the present application set forth a computer-implemented method for accessing data comprising determining a manifest associated with a given user of an application, where the manifest identifies one or more assets that are accessible by the given user, for each of the one or more assets, one of a plurality of endpoint stores that stores data associated with the asset, and for each of the one or more assets, one of the plurality of endpoint stores that stores metadata associated with the asset, generating, based on the manifest, a user namespace that includes a unique reference for each of the one or more assets, and presenting the user namespace to the user.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: November 28, 2023
    Assignee: NETFLIX, INC.
    Inventors: Kishore Udayashankar Kasi, Shailesh Birari, Prudhviraj Karumanchi, Vikram Krishnamurthy, Ioannis Papapanagiotou
  • Patent number: 11789926
    Abstract: In one embodiment, a data reconciliation engine works with data store nodes included in a distributed data store system to ensure consistency between the data store nodes. In operation, the data reconciliation receives a different data snapshot from each of the data store nodes. In response, the data reconciliation engine generates one or more recommendations designed to resolve inconsistencies between the data snapshots. The data reconciliation engine then transmits each recommendation to a different data store node. Because the data reconciliation engine performs many of the resource-intensive operations included in the data reconciliation process, the resources of the data store nodes may focus primarily on processing client requests instead of performing data reconciliation operations.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: October 17, 2023
    Assignee: NETFLIX, INC.
    Inventors: Ioannis Papapanagiotou, Shailesh Birari, Jason Cacciatore, Minh Do, Christos Kalantzis
  • Publication number: 20220276993
    Abstract: Various embodiments set forth systems and techniques for concurrent log and dump processing. The techniques include selecting, from a datastore, a chunk comprising one or more rows of data; comparing the one or more rows of data in the chunk with a first set of log events in a change log associated with the datastore, wherein each log event included in the first set of log events occurs after a first log event in the change log and prior to a second log event in the change log; selecting, based on the comparison, one or more non-conflicting rows in the chunk; and transmitting, to an output, one or more log events associated with the one or more non-conflicting rows in the chunk prior to processing a second set of log events in the change log, wherein the second set of log events occur after the second log event.
    Type: Application
    Filed: May 16, 2022
    Publication date: September 1, 2022
    Inventors: Andreas ANDREAKIS, Ioannis PAPAPANAGIOTOU
  • Patent number: 11347651
    Abstract: The disclosed computer-implemented method includes receiving an indication that cache data is to be copied from an originating cluster having a specified number of replica nodes to a destination cluster having an arbitrary number of replica nodes. The method further includes copying the cache data to a cache dump and creating a log that identifies where the cache data is stored in the cache dump. The method further includes copying the cache data from the cache dump to the replica nodes of the destination cluster. The copying includes writing the copied data in a distributed manner, such that at least a portion of the copied data is distributed over each of the replica nodes in the destination cluster. Various other methods, systems, and computer-readable media are also disclosed.
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: May 31, 2022
    Assignee: Netflix, Inc.
    Inventors: Deva Jayaraman, Shashi Madappa, Sridhar Enugula, Ioannis Papapanagiotou
  • Patent number: 11334554
    Abstract: Various embodiments set forth systems and techniques for concurrent log and dump processing. The techniques include selecting, from a datastore, a chunk comprising one or more rows of data; comparing the one or more rows of data in the chunk with a first set of log events in a change log associated with the datastore, wherein each log event included in the first set of log events occurs after a first log event in the change log and prior to a second log event in the change log; selecting, based on the comparison, one or more non-conflicting rows in the chunk; and transmitting, to an output, one or more log events associated with the one or more non-conflicting rows in the chunk prior to processing a second set of log events in the change log, wherein the second set of log events occur after the second log event.
    Type: Grant
    Filed: November 27, 2020
    Date of Patent: May 17, 2022
    Assignee: NETFLIX, INC.
    Inventors: Andreas Andreakis, Ioannis Papapanagiotou
  • Patent number: 11297138
    Abstract: In various embodiments, a benchmarking engine automatically tests a data store to assess functionality and/or performance of the data store. The benchmarking engine generates data store operations based on dynamically adjustable configuration data. As the benchmarking engine generates the data store operations, the data store operations execute on the data store. In a complementary fashion, as the data store operations execute on the data store, the benchmarking engine generates statistics based on the results of the executed data store operations. Advantageously, because the benchmarking engine adjusts the number and/or type of data store operations that the benchmarking engine generates based on any changes to the configuration data, the workload that executes on the data store may be fine-tuned as the benchmarking engine executes.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: April 5, 2022
    Assignee: NETFLIX, INC.
    Inventors: Vinay Chella, Ioannis Papapanagiotou
  • Publication number: 20220075886
    Abstract: Various embodiments of the present application set forth a computer-implemented method for accessing data comprising determining a manifest associated with a given user of an application, where the manifest identifies one or more assets that are accessible by the given user, for each of the one or more assets, one of a plurality of endpoint stores that stores data associated with the asset, and for each of the one or more assets, one of the plurality of endpoint stores that stores metadata associated with the asset, generating, based on the manifest, a user namespace that includes a unique reference for each of the one or more assets, and presenting the user namespace to the user.
    Type: Application
    Filed: September 4, 2020
    Publication date: March 10, 2022
    Inventors: Kishore Udayashankar KASI, Shailesh BIRARI, Prudhviraj KARUMANCHI, Vikram KRISHNAMURTHY, Ioannis PAPAPANAGIOTOU
  • Publication number: 20210182267
    Abstract: Various embodiments set forth systems and techniques for concurrent log and dump processing. The techniques include selecting, from a datastore, a chunk comprising one or more rows of data; comparing the one or more rows of data in the chunk with a first set of log events in a change log associated with the datastore, wherein each log event included in the first set of log events occurs after a first log event in the change log and prior to a second log event in the change log; selecting, based on the comparison, one or more non-conflicting rows in the chunk; and transmitting, to an output, one or more log events associated with the one or more non-conflicting rows in the chunk prior to processing a second set of log events in the change log, wherein the second set of log events occur after the second log event.
    Type: Application
    Filed: November 27, 2020
    Publication date: June 17, 2021
    Inventors: Andreas ANDREAKIS, Ioannis PAPAPANAGIOTOU
  • Publication number: 20210124691
    Abstract: The disclosed computer-implemented method includes receiving an indication that cache data is to be copied from an originating cluster having a specified number of replica nodes to a destination cluster having an arbitrary number of replica nodes. The method further includes copying the cache data to a cache dump and creating a log that identifies where the cache data is stored in the cache dump. The method further includes copying the cache data from the cache dump to the replica nodes of the destination cluster. The copying includes writing the copied data in a distributed manner, such that at least a portion of the copied data is distributed over each of the replica nodes in the destination cluster. Various other methods, systems, and computer-readable media are also disclosed.
    Type: Application
    Filed: January 4, 2021
    Publication date: April 29, 2021
    Inventors: Deva Jayaraman, Shashi Madappa, Sridhar Enugula, Ioannis Papapanagiotou
  • Patent number: 10915455
    Abstract: The disclosed computer-implemented method includes receiving an indication that cache data is to be copied from an originating cluster having a specified number of replica nodes to a destination cluster having an arbitrary number of replica nodes. The method further includes copying the cache data to a cache dump and creating a log that identifies where the cache data is stored in the cache dump. The method further includes copying the cache data from the cache dump to the replica nodes of the destination cluster. The copying includes writing the copied data in a distributed manner, such that at least a portion of the copied data is distributed over each of the replica nodes in the destination cluster. Various other methods, systems, and computer-readable media are also disclosed.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: February 9, 2021
    Assignee: Netflix, Inc.
    Inventors: Deva Jayaraman, Shashi Madappa, Sridhar Enugula, Ioannis Papapanagiotou
  • Publication number: 20200396287
    Abstract: Various embodiments of the present application set forth a computer-implemented method for accessing data comprising receiving, by a first storage controller at a first spoke network and from an entity remote to the first spoke network, a message identifying a first content item, where the first content item is identified based on a task that is to be performed by accessing the first content item, determining, by the first storage controller, a first storage partition that stores the first content item, where the first storage partition is included in a tiered group of storage partitions accessible by the first spoke network, retrieving, by the first storage controller from the first storage partition, the first content item, and causing, by the first storage controller, the first content item to be transmitted to a second spoke network for storage in a second storage partition accessible by the second spoke network.
    Type: Application
    Filed: March 16, 2020
    Publication date: December 17, 2020
    Inventors: Kishore KASI, Ioannis PAPAPANAGIOTOU, Shashi Shekar MADAPPA, Sridhar ENUGULA, Deva JAYARAMAN, Victor YELEVICH, Shunfei CHEN, Christopher GINTER, Olof JOHANSSON, Shailesh BIRARI
  • Patent number: 10749921
    Abstract: In various embodiments, a node manager configures a “new” node as a replacement for an “unavailable” node that was previously included in a distributed data store. First, the node manager identifies a source node that stores client data that was also stored in the unavailable node. Subsequently, the node manager configures the new node to operate as a slave of the source node and streams the client data from the source node to the new node. Finally, the node manager configures the new node to operate as one of multiple masters nodes in the distributed data store. Advantageously, by configuring the node to implement a hybrid of a master-slave replication scheme and a master-master replication scheme, the node manager enables the distributed data store to process client requests without interruption while automatically restoring the previous level of redundancy provided by the distributed data store.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: August 18, 2020
    Assignee: NETFLIX, INC.
    Inventors: Ioannis Papapanagiotou, Shailesh Birari, Jason Cacciatore, Minh Do, Christos Kalantzis
  • Publication number: 20200174940
    Abstract: The disclosed computer-implemented method includes receiving an indication that cache data is to be copied from an originating cluster having a specified number of replica nodes to a destination cluster having an arbitrary number of replica nodes. The method further includes copying the cache data to a cache dump and creating a log that identifies where the cache data is stored in the cache dump. The method further includes copying the cache data from the cache dump to the replica nodes of the destination cluster. The copying includes writing the copied data in a distributed manner, such that at least a portion of the copied data is distributed over each of the replica nodes in the destination cluster. Various other methods, systems, and computer-readable media are also disclosed.
    Type: Application
    Filed: September 5, 2019
    Publication date: June 4, 2020
    Inventors: Deva Jayaraman, Shashi Madappa, Sridhar Enugula, Ioannis Papapanagiotou
  • Patent number: 10241682
    Abstract: Embodiments of the invention provide a method, system and computer program product for dynamic caching module selection for optimized data deduplication. In an embodiment of the invention, a method for dynamic caching module selection for optimized data deduplication is provided. The method includes receiving a request to retrieve data and classifying the request. The method also includes identifying from amongst multiple different caching modules each with a different configuration a particular caching module associated with the classification of the request. Finally, the method includes deduplicating the data in the identified caching module.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: March 26, 2019
    Assignee: International Business Machines Corporation
    Inventors: Robert D. Callaway, Ioannis Papapanagiotou
  • Publication number: 20180060154
    Abstract: In various embodiments, a benchmarking engine automatically tests a data store to assess functionality and/or performance of the data store. The benchmarking engine generates data store operations based on dynamically adjustable configuration data. As the benchmarking engine generates the data store operations, the data store operations execute on the data store. In a complementary fashion, as the data store operations execute on the data store, the benchmarking engine generates statistics based on the results of the executed data store operations. Advantageously, because the benchmarking engine adjusts the number and/or type of data store operations that the benchmarking engine generates based on any changes to the configuration data, the workload that executes on the data store may be fine-tuned as the benchmarking engine executes.
    Type: Application
    Filed: December 29, 2016
    Publication date: March 1, 2018
    Inventors: Vinay CHELLA, Ioannis PAPAPANAGIOTOU
  • Publication number: 20170353515
    Abstract: In various embodiments, a node manager configures a “new” node as a replacement for an “unavailable” node that was previously included in a distributed data store. First, the node manager identifies a source node that stores client data that was also stored in the unavailable node. Subsequently, the node manager configures the new node to operate as a slave of the source node and streams the client data from the source node to the new node. Finally, the node manager configures the new node to operate as one of multiple masters nodes in the distributed data store. Advantageously, by configuring the node to implement a hybrid of a master-slave replication scheme and a master-master replication scheme, the node manager enables the distributed data store to process client requests without interruption while automatically restoring the previous level of redundancy provided by the distributed data store.
    Type: Application
    Filed: December 14, 2016
    Publication date: December 7, 2017
    Inventors: Ioannis PAPAPANAGIOTOU, Shailesh BIRARI, Jason CACCIATORE, Minh DO, Christos KALANTZIS
  • Publication number: 20170329531
    Abstract: Embodiments of the invention provide a method, system and computer program product for dynamic caching module selection for optimized data deduplication. In an embodiment of the invention, a method for dynamic caching module selection for optimized data deduplication is provided. The method includes receiving a request to retrieve data and classifying the request. The method also includes identifying from amongst multiple different caching modules each with a different configuration a particular caching module associated with the classification of the request. Finally, the method includes deduplicating the data in the identified caching module.
    Type: Application
    Filed: June 16, 2017
    Publication date: November 16, 2017
    Inventors: Robert D. Callaway, Ioannis Papapanagiotou
  • Patent number: 9733843
    Abstract: Embodiments of the invention provide a method, system and computer program product for dynamic caching module selection for optimized data deduplication. In an embodiment of the invention, a method for dynamic caching module selection for optimized data deduplication is provided. The method includes receiving a request to retrieve data and classifying the request. The method also includes identifying from amongst multiple different caching modules each with a different configuration a particular caching module associated with the classification of the request. Finally, the method includes deduplicating the data in the identified caching module.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: August 15, 2017
    Assignee: International Business Machines Corporation
    Inventors: Robert D. Callaway, Ioannis Papapanagiotou
  • Publication number: 20170193031
    Abstract: In one embodiment, a data reconciliation engine works with data store nodes included in a distributed data store system to ensure consistency between the data store nodes. In operation, the data reconciliation receives a different data snapshot from each of the data store nodes. In response, the data reconciliation engine generates one or more recommendations designed to resolve inconsistencies between the data snapshots. The data reconciliation engine then transmits each recommendation to a different data store node. Because the data reconciliation engine performs many of the resource-intensive operations included in the data reconciliation process, the resources of the data store nodes may focus primarily on processing client requests instead of performing data reconciliation operations.
    Type: Application
    Filed: January 4, 2016
    Publication date: July 6, 2017
    Inventors: Ioannis PAPAPANAGIOTOU, Shailesh BIRARI, Jason CACCIATORE, Minh DO, Christos KALANTZIS