Patents by Inventor Michael A. Ten-Pow
Michael A. Ten-Pow 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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Publication number: 20160124870Abstract: Systems and methods for providing object versioning in a storage system may support the logical deletion of stored objects. In response to a delete operation specifying both a user key and a version identifier, the storage system may permanently delete the specified version of an object having the specified key. In response to a delete operation specifying a user key, but not a version identifier, the storage system may create a delete marker object that does not contain object data, and may generate a new version identifier for the delete marker. The delete marker may be stored as the latest object version of the user key, and may be addressable in the storage system using a composite key comprising the user key and the new version identifier. Subsequent attempts to retrieve the user key without specifying a version identifier may return an error, although the object was not actually deleted.Type: ApplicationFiled: January 11, 2016Publication date: May 5, 2016Applicant: Amazon Technologies, Inc.Inventors: Jason G. McHugh, Praveen Kumar Gattu, Michael A. Ten-Pow, Derek Ernest Denny-Brown, II
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Patent number: 9235476Abstract: Systems and methods for providing object versioning in a storage system may support the logical deletion of stored objects. In response to a delete operation specifying both a user key and a version identifier, the storage system may permanently delete the specified version of an object having the specified key. In response to a delete operation specifying a user key, but not a version identifier, the storage system may create a delete marker object that does not contain object data, and may generate a new version identifier for the delete marker. The delete marker may be stored as the latest object version of the user key, and may be addressable in the storage system using a composite key comprising the user key and the new version identifier. Subsequent attempts to retrieve the user key without specifying a version identifier may return an error, although the object was not actually deleted.Type: GrantFiled: March 30, 2015Date of Patent: January 12, 2016Assignee: Amazon Technologies, Inc.Inventors: Jason G. McHugh, Praveen Kumar Gattu, Michael A. Ten-Pow, Derek Ernest Denny-Brown, II
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Publication number: 20150269199Abstract: A distributed storage system may store data object instances in persistent storage and may cache keymap information for those data object instances. The system may cache a latest symbolic key entry for some user keys of the data object instances. When a request is made for the latest version of stored data object instances having a specified user key, the latest version may be determined dependent on whether a latest symbolic key entry exists for the specified user key, and keymap information for the latest version may be returned. When storing keymap information, a flag may be set to indicate that a corresponding latest symbolic key entry should be updated. The system may delete a latest symbolic key entry for a particular user key from the cache in response to determining that no other requests involving the keymap information for data object instances having the particular user key are pending.Type: ApplicationFiled: June 8, 2015Publication date: September 24, 2015Applicant: AMAZON TECHNOLOGIES, INC.Inventors: JASON G. MCHUGH, PRAVEEN KUMAR GATTU, MICHAEL A. TEN-POW, DEREK ERNEST DENNY-BROWN, II
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Publication number: 20150261749Abstract: Systems and methods for providing object versioning in a storage system may support the logical deletion of stored objects through the use of delete marker objects. In response to a delete operation specifying a key, but not a version identifier, the storage system may create a delete marker object that is stored as the latest object version of the key. In response to performing a subsequent mutating operation, or at pre-determined time intervals, the storage system may perform a local and/or a global analysis of the delete marker objects stored in the system (and/or metadata associated with those delete marker objects) to determine whether any of them are no longer needed to ensure correct operation of the system. The analysis may apply one or more reap conditions to delete marker objects and/or metadata to identify extraneous delete marker objects, removing those that meet one or more reap conditions from storage.Type: ApplicationFiled: June 1, 2015Publication date: September 17, 2015Applicant: AMAZON TECHNOLOGIES, INC.Inventors: MICHAEL A. TEN-POW, DEREK ERNEST DENNYBROWN, II, JASON G. MCHUGH, PRAVEEN KUMAR GATTU
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Publication number: 20150205677Abstract: Systems and methods for providing object versioning in a storage system may support the logical deletion of stored objects. In response to a delete operation specifying both a user key and a version identifier, the storage system may permanently delete the specified version of an object having the specified key. In response to a delete operation specifying a user key, but not a version identifier, the storage system may create a delete marker object that does not contain object data, and may generate a new version identifier for the delete marker. The delete marker may be stored as the latest object version of the user key, and may be addressable in the storage system using a composite key comprising the user key and the new version identifier. Subsequent attempts to retrieve the user key without specifying a version identifier may return an error, although the object was not actually deleted.Type: ApplicationFiled: March 30, 2015Publication date: July 23, 2015Applicant: Amazon Technologies, Inc.Inventors: Jason G. MCHUGH, Praveen Kumar GATTU, Michael A. TEN-POW, Derek Ernest DENNY-BROWN, II
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Patent number: 9053054Abstract: A distributed storage system may store data object instances in persistent storage and may cache keymap information for those data object instances. The system may cache a latest symbolic key entry for some user keys of the data object instances. When a request is made for the latest version of stored data object instances having a specified user key, the latest version may be determined dependent on whether a latest symbolic key entry exists for the specified user key, and keymap information for the latest version may be returned. When storing keymap information, a flag may be set to indicate that a corresponding latest symbolic key entry should be updated. The system may delete a latest symbolic key entry for a particular user key from the cache in response to determining that no other requests involving the keymap information for data object instances having the particular user key are pending.Type: GrantFiled: February 10, 2014Date of Patent: June 9, 2015Assignee: Amazon Technologies, Inc.Inventors: Jason G. McHugh, Praveen Kumar Gattu, Michael A. Ten-Pow, Derek Ernest Denny-Brown, II
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Patent number: 9047312Abstract: Systems and methods for providing object versioning in a storage system may support the logical deletion of stored objects through the use of delete marker objects. In response to a delete operation specifying a key, but not a version identifier, the storage system may create a delete marker object that is stored as the latest object version of the key. In response to performing a subsequent mutating operation, or at pre-determined time intervals, the storage system may perform a local and/or a global analysis of the delete marker objects stored in the system (and/or metadata associated with those delete marker objects) to determine whether any of them are no longer needed to ensure correct operation of the system. The analysis may apply one or more reap conditions to delete marker objects and/or metadata to identify extraneous delete marker objects, removing those that meet one or more reap conditions from storage.Type: GrantFiled: March 30, 2011Date of Patent: June 2, 2015Assignee: Amazon Technologies, Inc.Inventors: Michael A. Ten-Pow, Derek E. Denny-Brown, II, Jason G. McHugh, Praveen K. Gattu
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Patent number: 8996831Abstract: Systems and methods for providing object versioning in a storage system may support the logical deletion of stored objects. In response to a delete operation specifying both a user key and a version identifier, the storage system may permanently delete the specified version of an object having the specified key. In response to a delete operation specifying a user key, but not a version identifier, the storage system may create a delete marker object that does not contain object data, and may generate a new version identifier for the delete marker. The delete marker may be stored as the latest object version of the user key, and may be addressable in the storage system using a composite key comprising the user key and the new version identifier. Subsequent attempts to retrieve the user key without specifying a version identifier may return an error, although the object was not actually deleted.Type: GrantFiled: July 29, 2013Date of Patent: March 31, 2015Assignee: Amazon Technologies, Inc.Inventors: Jason G. McHugh, Praveen Kumar Gattu, Michael A. Ten-Pow, Derek Ernest Denny-Brown, II
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Patent number: 8943279Abstract: Systems and methods providing a versioning feature in a storage system may allow the versioning feature to be toggled on and/or off during operation. Access operations targeting data objects stored in the system (e.g., delete and store type operations) may behave differently depending on whether versioning is (or has ever been) enabled for the storage system or a storage bucket thereof, or is not (or has never been) enabled for the storage system or storage bucket. For example, if versioning is off or suspended, a store operation may overwrite existing data. However, if versioning is enabled, a store type operation may create and store a new, unique object. If versioning has never been enabled, a delete operation may delete a stored object. However, if versioning has ever been enabled, a delete operation may create a new, unique delete marker object and may or may not delete any objects or data.Type: GrantFiled: March 14, 2014Date of Patent: January 27, 2015Assignee: Amazon Technologies, Inc.Inventors: Jason G. McHugh, Praveen Kumar Gattu, Michael A. Ten-Pow, Derek Ernest Denny-Brown, II
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Publication number: 20150012539Abstract: A distributed storage system may store data object instances in persistent storage and may store keymap information for those data object instances in a distributed hash table on multiple computing nodes. Each data object instance may include a composite key containing a user key. The keymap information for each data object instance may map the user key to a locator and the locator to the data object instance. A request to store or retrieve keymap information for a data object instance may be routed to a particular computing node based on a consistent hashing scheme in which a hash function is applied to a portion of the composite key of the data object instance. Thus, related entries may be clustered on the same computing nodes. The portion of the key to which the hash function is applied may include a pre-determined number of bits or be identified using a delimiter.Type: ApplicationFiled: September 29, 2014Publication date: January 8, 2015Applicant: AMAZON TECHNOLOGIES, INC.Inventors: JASON G. MCHUGH, PRAVEEN KUMAR GATTU, MICHAEL A. TEN-POW, DEREK ERNEST DENNY-BROWN, II
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Patent number: 8849825Abstract: A distributed storage system may store data object instances in persistent storage and may store keymap information for those data object instances in a distributed hash table on multiple computing nodes. Each data object instance may include a composite key containing a user key. The keymap information for each data object instance may map the user key to a locator and the locator to the data object instance. A request to store or retrieve keymap information for a data object instance may be routed to a particular computing node based on a consistent hashing scheme in which a hash function is applied to a portion of the composite key of the data object instance. Thus, related entries may be clustered on the same computing nodes. The portion of the key to which the hash function is applied may include a pre-determined number of bits or be identified using a delimiter.Type: GrantFiled: December 23, 2010Date of Patent: September 30, 2014Assignee: Amazon Technologies, Inc.Inventors: Jason G. McHugh, Praveen K. Gattu, Michael A. Ten-Pow, Derek E. Denny-Brown, II
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Patent number: 8677083Abstract: Systems and methods providing a versioning feature in a storage system may allow the versioning feature to be toggled on and/or off during operation. Access operations targeting data objects stored in the system (e.g., delete and store type operations) may behave differently depending on whether versioning is (or has ever been) enabled for the storage system or a storage bucket thereof, or is not (or has never been) enabled for the storage system or storage bucket. For example, if versioning is off or suspended, a store operation may overwrite existing data. However, if versioning is enabled, a store type operation may create and store a new, unique object. If versioning has never been enabled, a delete operation may delete a stored object. However, if versioning has ever been enabled, a delete operation may create a new, unique delete marker object and may or may not delete any objects or data.Type: GrantFiled: September 21, 2010Date of Patent: March 18, 2014Assignee: Amazon Technologies, Inc.Inventors: Jason G. McHugh, Praveen K. Gattu, Michael A. Ten-Pow, Derek E. Denny-Brown, II
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Patent number: 8650156Abstract: A distributed storage system may store data object instances in persistent storage and may cache keymap information for those data object instances. The system may cache a latest symbolic key entry for some user keys of the data object instances. When a request is made for the latest version of stored data object instances having a specified user key, the latest version may be determined dependent on whether a latest symbolic key entry exists for the specified user key, and keymap information for the latest version may be returned. When storing keymap information, a flag may be set to indicate that a corresponding latest symbolic key entry should be updated. The system may delete a latest symbolic key entry for a particular user key from the cache in response to determining that no other requests involving the keymap information for data object instances having the particular user key are pending.Type: GrantFiled: December 23, 2010Date of Patent: February 11, 2014Assignee: Amazon Technologies, Inc.Inventors: Jason G. McHugh, Praveen K. Gattu, Michael A. Ten-Pow, Derek E. Denny-Brown, II
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Patent number: 8533170Abstract: Systems and methods that provide versioning in a storage system may automatically determine the latest version of a stored object when a version identifier is not specified for an access operation. For example, retrieve type operations may behave differently when they specify a version identifier than when they do not. The system may determine and fill in the version identifier of the latest stored version of an object having a specified key for a retrieve type operation if a version identifier is not specified. Key map elements representing each object stored in the system may include an indication of the time at which the object was created or modified. The latest version of an object may be ascertained by locating the first element among ordered elements in the key map with the specified user key, or an adjacent element with the specified key that has a more recent creation/modification date.Type: GrantFiled: September 21, 2010Date of Patent: September 10, 2013Assignee: Amazon Technologies, Inc.Inventors: Jason G. McHugh, Praveen K. Gattu, Michael A. Ten-Pow, Derek E. Denny-Brown, II
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Patent number: 8504758Abstract: Systems and methods for providing object versioning in a storage system may support the logical deletion of stored objects. In response to a delete operation specifying both a user key and a version identifier, the storage system may permanently delete the specified version of an object having the specified key. In response to a delete operation specifying a user key, but not a version identifier, the storage system may create a delete marker object that does not contain object data, and may generate a new version identifier for the delete marker. The delete marker may be stored as the latest object version of the user key, and may be addressable in the storage system using a composite key comprising the user key and the new version identifier. Subsequent attempts to retrieve the user key without specifying a version identifier may return an error, although the object was not actually deleted.Type: GrantFiled: September 21, 2010Date of Patent: August 6, 2013Assignee: Amazon Technologies, Inc.Inventors: Jason G. McHugh, Praveen K. Gattu, Michael A. Ten-Pow, Derek E. Denny-Brown, II