METHOD, APPARATUS, AND COMPUTER PROGRAM STORED IN COMPUTER READABLE MEDIUM FOR READING BLOCK IN DATABASE SYSTEM
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United States of America Patent
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app pub date -
Jul 21, 2016
filing date -
Jun 21, 2016
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Abstract
Provided is a method for reading a block in a database system. Provided is a method for reading data recorded in a persistent storage medium by a first node among a plurality of nodes, including: receiving a reading request for a plurality of blocks among blocks recorded in the persistent storage medium; determining respective master nodes of the plurality of blocks; querying, of the master nodes of the plurality of respective blocks, whether a lock for reading the data recorded in each of the plurality of blocks is required; skipping an operation of obtaining the lock and reading the data, with respect to at least some blocks of which the lock is not required among the plurality of blocks, based on the query result; and reading the data after obtaining the lock with respect to at least some blocks of which the lock is required among the plurality of blocks, based on the query result.
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