The ReadPartition class is a regular type that represents a single slice of a parallel Read operation.
Instances of ReadPartition are created by Client::PartitionRead. Once created, ReadPartition objects can be serialized, transmitted to separate processes, and used to read data in parallel using Client::Read. If data_boost is set, those requests will be executed using the independent compute resources of Cloud Spanner Data Boost.
Constructors
ReadPartition(ReadPartition const &)
Copy and move.
Parameter
Name
Description
ReadPartition const &
ReadPartition(ReadPartition &&)
Copy and move.
Parameter
Name
Description
ReadPartition &&
ReadPartition()
Constructs an instance of ReadPartition that does not specify any table or columns to be read.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22 UTC."],[[["\u003cp\u003eThe \u003ccode\u003eReadPartition\u003c/code\u003e class represents a single segment of a parallel read operation in Cloud Spanner.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eReadPartition\u003c/code\u003e instances are generated by the \u003ccode\u003eClient::PartitionRead\u003c/code\u003e method and can be distributed to multiple processes for parallel data retrieval.\u003c/p\u003e\n"],["\u003cp\u003eThese \u003ccode\u003eReadPartition\u003c/code\u003e objects can be used with the \u003ccode\u003eClient::Read\u003c/code\u003e method for parallel reads, and can also utilize independent computing resources when \u003ccode\u003edata_boost\u003c/code\u003e is set.\u003c/p\u003e\n"],["\u003cp\u003eThis page contains documentation for several versions of the \u003ccode\u003eReadPartition\u003c/code\u003e class, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc.\u003c/p\u003e\n"],["\u003cp\u003eThe class \u003ccode\u003eReadPartition\u003c/code\u003e provides constructors to create new instances and also has functions to view the \u003ccode\u003eTableName\u003c/code\u003e, \u003ccode\u003eColumnNames\u003c/code\u003e and \u003ccode\u003eReadOptions\u003c/code\u003e set.\u003c/p\u003e\n"]]],[],null,[]]
