Emc IP Holding Company LLC

Emc Corporation

Pivotal Software, Inc.

Ashwin Kumar

Cimarron Taylor

Gavin Sherry

A planning indication directed to a declaratively-described operation and a target MPP database is received where the operation includes multiple mid-operation states and the operation includes, for each state in the plurality of states, those types of devices in a MPP database which would be affected by that state if the operation were performed, including a first set of affected device types and a first mid-operation state. In response to receiving the planning indication, affected device(s) in the target MPP database which would be affected by the first mid-operation state if the operation were performed are determined without performing the operation on the target MPP database. This determination is based at least in part on the first set of affected device types included in the operation. The first mid-operation state and the affected devices are indicated in a display.

Declarative cluster management

An indication associated with an operation is received where the operation includes a mid-operation state and a device associated with the mid-operation state. In response to receiving the indication, the operation is processed using a declarative primitive to obtain metadata associated with one or more of the following: the device or the mid-operation state. The metadata is displayed.

Updatable cursors for positioned updates are provided in a distributed shared-nothing data store by associating with each row of data in a result set hidden metadata that identifies the segments and the locations on such segments of such row. When an update is issued to data under a cursor, the associated metadata is transparently inserted into the update statement before it is dispatched to the segments to insure that the correct data is accurately updated. For cached query statements, generic metadata identifiers are used for building and caching, and the actual metadata identifiers are folded into the statement in place of the generic identifiers before dispatch.

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San Carlos, CA, United States of America

Ashwin Kumar