Google Inc.

Long Fei

Simon Tyler Wise

David Halladay Schneider

Sven Koehler

Sahand Saba

Konstantinos Nikoloudakis

Danyao Wang

Robbie Alan Haertel

Manisha Jain

Ryan Michael Lefever

Deborah Weisser

William Eric Province

Methods, systems, apparatus, including computer programs encoded on computer storage media, for reclaiming storage space in a storage environment. In one aspect, the method includes actions of aggregating data that is indicative of access to one or more data objects, determining a future storage cost associated with each of a plurality of data objects, determining an access window for each of the plurality of data objects, identifying a data object based on (i) the future storage cost that satisfies a predetermined threshold and (ii) a data object access window, providing a notification to a user device that requests feedback from a user indicating whether the data object can be deleted, and in response to receiving data that indicates that the data object can be deleted, generating an instruction to cause deletion of the data object upon the expiration of the access window.

Optimizing data storage with access windows

Garbage collection for data storage

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for analyzing lineage data. One of the methods includes obtaining data access event information; generating a lineage graph from the data access event information; receiving a data lineage request, wherein the data lineage request is a request for lineage data for a specified data set or a specified software process; traversing the lineage graph to identify nodes and edges in the lineage graph that satisfy the data lineage request; and providing data identifying the nodes and edges that satisfy the data lineage request in response to the request.

Data lineage analysis

A system and method for large-scale data schema analysis and quality assurance is disclosed. A data schema may be received and compiled into an internal representation for analysis. The schema's information may also be exposed via an application programming interface. Using the schema's application programming interface along with a provided requirement, the schema may be analyzed and/or corrected for quality, consistency and interoperability.

Method for large-scale data schema analysis and quality assurance

A system is configured to obtain code that includes a set of protected instructions, the set of protected instructions, when executed, performing acts associated with the code; execute a region of the code, the region including a protected instruction, the protected instruction identifying a first condition that, when satisfied by a condition under which a particular error is detected, causes an exception, associated with the particular error, to be raised, the first condition being specified by a programmer associated with the computing device; detect an error within a line of the code associated with the protected instruction; identify a second condition under which the error is detected; determine whether the second condition satisfies the first condition; raise an exception, associated with the error, when the second condition satisfies the first condition; and process the error based on raising the exception associated with the error.

Programmer specified conditions for raising exceptions and handling errors detected within programming code

Growing community of inventors

Campbell, CA, United States of America

Long Fei