Microsoft Technology Licensing, LLC

Covestro Intellectual Property Gmbh & Co. Kg

Jianwu Gao

Lei Shi

Shane Kumar Mainali

Ju Wang

Krishnan Varadarajan

Venkates Paramasivam Balakrishnan

Jegan Devaraju

Quan Zhang

Zichen Sun

Manish Chablani

Shaoyu Zhang

Hao Feng

Chenxi Zhang

Kaifeng Zhu

Jia Cao

A distributed storage system includes table controllers collectively storing partitions of a logical table having multiple rows. For each of the partitions, a corresponding table controller stores a subset of the rows of the logical table across individual pages. A management controller updates a schema of the logical table from a first to a second schema definition by, for each of the partitions, sending an update command indicating the second schema definition to the corresponding table controller. The first table controller corresponds to a first partition that includes a first subset of the rows. The first table controller, prior to receiving the update command, includes an identifier of the first schema definition within each page of data for the first subset. Subsequent to receiving the update command, the first table controller, when writing each new page of data for the first subset, includes an identifier of the second schema definition.

Online schema change of range-partitioned index in a distributed storage system

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Shanghai, China

Jianwu Gao