Palantir Technologies Inc.

Other

Joseph Ellis

Mark Elliot

Robert Fink

Sandor Van Wassenhove

Lawrence Manning

Rahij Ramsharan

Matthew Sills

James Baker

Jakub Kozlowski

A computer system can receive one or more edits to be made to a canonical dataset and can temporarily store the one or more edits in a buffer. In response to receipt of a query of the canonical dataset, the computer system can rewrite the query to read from the canonical dataset and the buffer; combine the one or more edits from the buffer with the canonical dataset to form a combined dataset based on resolution policies to avoid conflicts between data; rewrite the query to execute on the combined dataset in lieu of the canonical dataset to optimize query performance; and execute the query on the combined dataset.

Low-latency database system

A database system comprised of a decoupled compute layer and storage layer is implemented to store, build, and maintain a canonical dataset, a temporary buffer, and an edits dataset. The canonical dataset is a set of batch updated data. The data is appended in chunks to the canonical dataset such that the canonical dataset becomes a historical dataset over time. The buffer is a write ahead log that contains the most recent chunks of data and provides atomicity and durability for the database system. The edits dataset is the set of data that contains edits such as cell mutations, row appends and/or row deletions. The database system enables users to make cell or row-level edits to tables and observe those edits in analytical systems or downstream builds with minimal latency.

Systems and methods are provided for data migration. The system may comprise one or more processors and a memory storing instructions that, when executed by the one or more processors, cause the system to migrate at least one first table of a first database schema to at least one second table of a second database schema, determine a query for modifying the first table during the migration, modify the second table based at least in part on the query, and update a mutation table to describe the modification, wherein the mutation table at least describes the modification.

System and methods for live data migration

Example embodiments describe a data storage method and system. For example, the method described, performed by one or more processors, may comprise in an application for enforcing one or more policies for reading and writing data to a database receiving, over a data network, instructions for performing a read or write request for data, and sending the read or write request to a transaction manager for providing transactions for a key-value store of the database, the request being in accordance with one or more policies to be enforced by the enforcing application. The method may also comprise receiving, from the transaction manager, a response message based on operations performed by the transaction manager in response to the read or write request.

Data storage method and system

A reusable column mold particularly adapted for use in casting concrete pillars or columns, that mold including a sheet of flat, flexible material which can be rolled into a columnar configuration to erect the mold form and which can be readily stripped from a set-up concrete column cast into the mold form. In preferred form, the flat sheet is of a rectangular configuration and is characterized by a plurality of tongues on one side edge which, when the sheet is rolled into columnar configuration, are adapted to fit into slots in the sheet located on one of a series of slot lines (the slot lines are parallel to the sheet's tongued side edge and are positioned intermediate the sheet's side edges); the cross-sectional area of the mold form is determined by that slot line of the sheet which cooperates with the sheet's tongued edge. The mold form is retained in set-up configuration by banding at spaced locations along its length, the banding serving to force the tongues fully into the slots, to prevent the form from unwrapping out of columnar configuration, and to reinforce the flexible material in columnar configuration. Further, visual indicia is provided on the sheet, and is adapted to cooperate with a port in the sheet when it is rolled into columnar configuration, to indicate the cross-sectional area of the erected mold form.

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Palo Alto, CA, United States of America

Joseph Ellis