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PARALLEL PROCESSING DATABASE TREE STRUCTURE

  • US 20150379078A1
  • Filed: 09/10/2015
  • Published: 12/31/2015
  • Est. Priority Date: 02/25/2013
  • Status: Active Grant
First Claim
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1. A method for executing queries in a parallel processing database system, comprising:

  • receiving a query at a master node, the master node comprising a database catalog including metadata;

    deriving a plurality of query plans based at least in part on the query;

    transmitting, to a plurality of worker nodes, corresponding ones of the plurality of query plans and associated query metadata, wherein the query metadata includes information used in connection with executing the query plans; and

    in the event that additional metadata is needed in connection with executing one of the plurality of query plans, receiving a request for additional metadata corresponding to the query plan for which additional metadata is needed.

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