Patents by Inventor Junping Frank Zhao
Junping Frank Zhao 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: 11201836Abstract: Embodiments of the present disclosure relate to a method and a device for managing a stateful application on a server. The method includes, in response to receiving a first request from a client for initializing the stateful application, allocating a storage resource to the stateful application. The method further includes, in response to receiving a second request from the client for processing data, storing the data in the storage resource. The method also includes enabling the stateful application to process the stored data.Type: GrantFiled: June 28, 2018Date of Patent: December 14, 2021Assignee: EMC IP Holding Company LLCInventors: Jie Bao, Kun Wang, Junping Frank Zhao, Layne Lin Peng
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Patent number: 11150975Abstract: Embodiments of the present disclosure provide a method and apparatus for determining a cause of performance degradation of a storage system. The method comprises: monitoring performance of the storage system according to a predetermined policy; generating a performance degradation event from a result of the monitoring based on system performance baseline; in response to performance degradation event, obtaining information about the performance degradation; and offline analyzing the information to determine the cause of the performance degradation. Compared with the prior art, embodiments of the present disclosure can manage the system performance degradation effectively and continuously to minimize running costs and enable current performance profiling tools in the manner of insertion.Type: GrantFiled: August 5, 2019Date of Patent: October 19, 2021Assignee: EMC IP Holding Company LLCInventors: Junping Frank Zhao, Yu Cao, Sanping Li
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Patent number: 10936467Abstract: An information handling system may include at least one central processing unit (CPU), and a plurality of special-purpose processing units. The information handling system may be configured to: repeatedly monitor amounts of data traffic exchanged between respective pairs of the special-purpose processing units during selected time periods; based on the monitored amounts of data traffic, determine an amount of traffic imbalance for the plurality of special-purpose processing units; and in response to the amount of traffic imbalance exceeding a threshold amount, transmit a notification indicative of the amount of traffic imbalance.Type: GrantFiled: April 11, 2019Date of Patent: March 2, 2021Assignee: Dell Products L.P.Inventors: Junping Frank Zhao, Yunfan Han
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Patent number: 10901949Abstract: Embodiments of the present disclosure relate to a method and an apparatus for compressing metadata in a file system. The method comprises, in response to receiving a first request for writing first data to a file, determining whether the first request is for an initial write to a storage area associated with a second indirect block in the first group of indirect blocks, the first group of indirect blocks at least including a first indirect block and the second indirect block. The method further comprises, in response to the initial write, allocating a first group of data blocks for writing the first data on a storage device. In addition, the method further comprises compressing the first group of indirect blocks by encoding a first group of storage addresses corresponding to the first group of data blocks into the first indirect block.Type: GrantFiled: June 20, 2017Date of Patent: January 26, 2021Assignee: EMC IP Holding Company LLCInventors: Junping Frank Zhao, Accela Yilong Zhao
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Patent number: 10862786Abstract: A method, device, and computer program product for fingerprint based status detection in a distributed processing system is provided. The method comprises: generating and sending, at a root node, an initial fingerprint based on the output message ID to be sent; at a middle node, generating and sending an updated fingerprint based on a received input message ID, an output message ID to be sent and a received fingerprint; sending, at the leaf node, a final updated fingerprint to a tracking task point; and obtaining, at the tracking task point, status information based on the final updated fingerprint. As the method does not generate traffic at each node but only generates tracking traffic at leaf nodes, the approach according to the present disclosure reduces tracking overhead significantly while guaranteeing the reliability of data processing.Type: GrantFiled: October 22, 2019Date of Patent: December 8, 2020Assignee: EMC IP Holding Company, LLCInventors: Junping Frank Zhao, Fenghao Zhang, Yu Cao, Jun Tao, Ricky Yuxi Sun
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Patent number: 10860245Abstract: Embodiments of the present disclosure propose a method and apparatus for optimizing storage of application data. The method comprises obtaining description information for application data from an application; performing storage optimization based on the description information; and performing at least pan of a storage function to be implemented by the back-end storage device, based on the description information before transmitting application data to the back-end storage device. With the method or apparatus according to the embodiments of the present disclosure, an efficient manner of integrating the application and non-volatile storage device is provided to coordinate the application and storage, thereby improving efficiency and expanding capability.Type: GrantFiled: March 10, 2017Date of Patent: December 8, 2020Assignee: EMC IP Holding Company, LLCInventors: Junping Frank Zhao, Kun Wang, Yu Cao, Zhe Dong, Sanping Li
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Publication number: 20200327036Abstract: An information handling system may include at least one central processing unit (CPU), and a plurality of special-purpose processing units. The information handling system may be configured to: repeatedly monitor amounts of data traffic exchanged between respective pairs of the special-purpose processing units during selected time periods; based on the monitored amounts of data traffic, determine an amount of traffic imbalance for the plurality of special-purpose processing units; and in response to the amount of traffic imbalance exceeding a threshold amount, transmit a notification indicative of the amount of traffic imbalance.Type: ApplicationFiled: April 11, 2019Publication date: October 15, 2020Applicant: Dell Products L.P.Inventors: Junping Frank ZHAO, Yunfan HAN
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Patent number: 10761755Abstract: A method, apparatus, and computer program product for reclaiming one or more chunks in a snapshot storage space, are disclosed. The method comprises detecting one or more unused chunks in the snapshot storage space in response to a predefined trigger event, and reclaiming one or more detected unused chunks by providing the one or more detected unused chunks to a storage pool for reuse. One or more unused chunks may be detected by scanning a first mapping table that records a storage state of a plurality of chunks in the snapshot storage space, and a determination made whether the one or more detected unused chunks have been reclaimed. If the one or more detected unused chunks have not been reclaimed, the one or more detected unused chunks may be provided to the storage pool and a second mapping table updated to record a reclaiming state of the one or more unused chunks. A new snapshot may be stored using a chunk in the snapshot storage space that has not been used and has not been reclaimed yet.Type: GrantFiled: September 20, 2016Date of Patent: September 1, 2020Assignee: EMC IP Holding Company, LLCInventors: Chen Gong, Junping Frank Zhao, Lester Ming Zhang, Joe Jian Liu, Denny Dengyu Wang, Walter Lei Wang
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Patent number: 10705981Abstract: Embodiments of the present disclosure provide a method and apparatus for providing data storage service. The method comprises: receiving a storage service template from an user, the storage service template specifying a storage service policy for the user and a service instance to launch; and providing a storage service according to the storage service template; wherein the storage service policy defines a storage function to be performed for data of the user. With the method and apparatus according to embodiments of the present disclosure, a unified solution for overall orchestration of storage functions can be provided to enable the user to customize the required storage function flexibly.Type: GrantFiled: March 13, 2017Date of Patent: July 7, 2020Assignee: EMC IP Holding Company LLCInventors: Layne Lin Peng, Accela Yilong Zhao, Junping Frank Zhao, Yu Cao, Xiaoyan Guo, Zhe Dong, Sanping Li
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Patent number: 10678464Abstract: Embodiments of the present disclosure provide methods and apparatuses for data migration of storage devices including registering at least one executing unit for data migration, each of the at least one executing unit corresponding to description file; extracting and storing information contained in the description file corresponding to each of the at least one executing unit; receiving a data migration request from a user; in response to the data migration request from the user, selecting an executing unit for data migration of the user at least based on part of the stored information contained in the description file; and scheduling an instance of the selected executing unit to execute data migration of the user. The methods or apparatuses according to embodiments of the present disclosure can implement, in a uniform and scalable manner, data migration for various formats, various performance requirements, and application scenarios.Type: GrantFiled: March 10, 2017Date of Patent: June 9, 2020Assignee: EMC IP Holding Company LLCInventors: Junping Frank Zhao, Layne Lin Peng, Yu Cao, Sanping Li, Zhe Dong
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Patent number: 10681118Abstract: Embodiments of the present disclosure provide a method and apparatus for distributed data processing. The method comprises: receiving from an upstream node an input message attached with a shared count, the shared count being used for determining a processing status of a root message associated with the input message; processing the input message to generate one or more new messages; allocating to each of the one or more new messages a respective new shared count based on the received shared count; and transmitting the one or more new messages to one or more downstream nodes respectively. Compared with the prior art, the methods and apparatuses for distributed data processing according to the embodiments of the present disclosure can effectively reduce network traffic overheads and the consumed CPU and memory resources, and would be scalable for different topologies of various distributed data processing systems.Type: GrantFiled: December 19, 2016Date of Patent: June 9, 2020Assignee: EMC IP Holding Company LLCInventors: Junping Frank Zhao, Fenghao Zhang, Yu Cao, Jun Tao, Ricky Yuxi Sun
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Patent number: 10678453Abstract: A method and device for checking false sharing in deletion of a data block are disclosed. The method includes setting weight bits and a weight reset bit in a mapping pointer (MP) pointing to the data block, wherein the weight reset bit is configured to define whether a weight indicated by the weight bits has been increased; and determining, based on the weight bits and the weight reset bit, whether false sharing occurs. The method determines whether false sharing occurs accurately and with low cost by using a computable formula. All information for such computable formula comes from in-memory MP, with no need to load any extra metadata, for example, with no need to access Block Meta Data. The method also considers a scenario where a weight increase occurs during a weight split and merge with other pointers.Type: GrantFiled: September 20, 2016Date of Patent: June 9, 2020Assignee: EMC IP Holding Company LLCInventors: Junping Frank Zhao, Fenghao Zhang
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Publication number: 20200099604Abstract: A method, device, and computer program product for fingerprint based status detection in a distributed processing system is provided. The method comprises: generating and sending, at a root node, an initial fingerprint based on the output message ID to be sent; at a middle node, generating and sending an updated fingerprint based on a received input message ID, an output message ID to be sent and a received fingerprint; sending, at the leaf node, a final updated fingerprint to a tracking task point; and obtaining, at the tracking task point, status information based on the final updated fingerprint. As the method does not generate traffic at each node but only generates tracking traffic at leaf nodes, the approach according to the present disclosure reduces tracking overhead significantly while guaranteeing the reliability of data processing.Type: ApplicationFiled: November 26, 2019Publication date: March 26, 2020Inventors: Junping Frank Zhao, Fenghao Zhang, Cao Yu, Jun Tao, Ricky Yuxi Sun
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Publication number: 20200052990Abstract: A method, device, and computer program product for fingerprint based status detection in a distributed processing system is provided. The method comprises: generating and sending, at a root node, an initial fingerprint based on the output message ID to be sent; at a middle node, generating and sending an updated fingerprint based on a received input message ID, an output message ID to be sent and a received fingerprint; sending, at the leaf node, a final updated fingerprint to a tracking task point; and obtaining, at the tracking task point, status information based on the final updated fingerprint. As the method does not generate traffic at each node but only generates tracking traffic at leaf nodes, the approach according to the present disclosure reduces tracking overhead significantly while guaranteeing the reliability of data processing.Type: ApplicationFiled: October 22, 2019Publication date: February 13, 2020Inventors: Junping Frank Zhao, Fenghao Zhang, Yu Cao, Jun Tao, Ricky Yuxi Sun
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Patent number: 10491498Abstract: A method, device, and computer program product for fingerprint based status detection in a distributed processing system is provided. The method comprises: generating and sending, at a root node, an initial fingerprint based on the output message ID to be sent; at a middle node, generating and sending an updated fingerprint based on a received input message ID, an output message ID to be sent and a received fingerprint; sending, at the leaf node, a final updated fingerprint to a tracking task point; and obtaining, at the tracking task point, status information based on the final updated fingerprint. As the method does not generate traffic at each node but only generates tracking traffic at leaf nodes, the approach according to the present disclosure reduces tracking overhead significantly while guaranteeing the reliability of data processing.Type: GrantFiled: September 21, 2016Date of Patent: November 26, 2019Assignee: EMC IP Holding Company LLCInventors: Junping Frank Zhao, Fenghao Zhang, Yu Cao, Jun Tao, Ricky Yuxi Sun
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Publication number: 20190354426Abstract: Embodiments of the present disclosure provide a method and apparatus for determining a cause of performance degradation of a storage system. The method comprises: monitoring performance of the storage system according to a predetermined policy; generating a performance degradation event from a result of the monitoring based on system performance baseline; in response to performance degradation event, obtaining information about the performance degradation; and offline analyzing the information to determine the cause of the performance degradation. Compared with the prior art, embodiments of the present disclosure can manage the system performance degradation effectively and continuously to minimize running costs and enable current performance profiling tools in the manner of insertion.Type: ApplicationFiled: August 5, 2019Publication date: November 21, 2019Inventors: Junping Frank Zhao, Yu Cao, Sanping Li
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Patent number: 10409517Abstract: Embodiments of the present disclosure provide a device for data backup comprising: a secondary backup device coupled to a primary backup device, the secondary backup device further comprising: data segmentation unit operable to divide target data to be backed up into a plurality of data segments; data fingerprint generation unit operable to generate a corresponding data fingerprint for each data segment from a plurality of data segments, and providing the data fingerprint to the primary backup device for backing up the target data at the primary backup device, wherein the data fingerprint is a mapped data segment of a length less than a corresponding data segment length.Type: GrantFiled: March 15, 2017Date of Patent: September 10, 2019Assignee: EMC IP Holding Company LLCInventors: Colin Yong Zou, Kun Wang, Sean Cheng Ye, Junping Frank Zhao, Man Lv
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Patent number: 10387369Abstract: A method is used in managing file deletions in storage systems. A request to delete a portion of a file of a file system is received. A first indirect block is associated with the portion of the file and includes a set of file system blocks. A second indirect block associated with a replica of the file is identified. The first and second indirect blocks share a subset of the set of file system blocks. The replica of the file represents a state of the file at a particular prior point in time. Metadata of the second indirect block is updated indicating that the subset of the set of file system blocks are no longer shared between the first and second indirect blocks.Type: GrantFiled: June 30, 2014Date of Patent: August 20, 2019Assignee: EMC IP Holding Company LLCInventors: William C. Davenport, Philippe Armangau, Junping Frank Zhao
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Patent number: 10372525Abstract: Embodiments of the present disclosure provide a method and apparatus for determining a cause of performance degradation of a storage system. The method comprises: monitoring performance of the storage system according to a predetermined policy; generating a performance degradation event from a result of the monitoring based on system performance baseline; in response to performance degradation event, obtaining information about the performance degradation; and offline analyzing the information to determine the cause of the performance degradation. Compared with the prior art, embodiments of the present disclosure can manage the system performance degradation effectively and continuously to minimize running costs and enable current performance profiling tools in the manner of insertion.Type: GrantFiled: December 16, 2016Date of Patent: August 6, 2019Assignee: EMC IP Holding Company LLCInventors: Junping Frank Zhao, Yu Cao, Sanping Li
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Patent number: 10209905Abstract: Various embodiments of the present invention provide a method and apparatus for reusing a storage block of a file system. The file system is based on a thin provision storage configuration and shares a storage pool with a further file system. The method comprises detecting an unused storage block in a storage space of the file system in response to a predefined trigger event. The method further comprises in response to an unused storage block being detected in the storage space, providing the unused storage block to the storage pool for being reused. According to various embodiments of the present invention, effective utilization of the storage space of the storage pool is achieved.Type: GrantFiled: December 16, 2015Date of Patent: February 19, 2019Assignee: EMC IP Holding Company LLCInventors: Chen Gong, Junping Frank Zhao, Lester Ming Zhang, Joe Jian Liu, Denny Dengyu Wang, Walter Lei Wang