A number of environment variables can be used to configure the behavior of the library. There are also functions to configure this behavior in code. The environment variables are convenient when troubleshooting problems.
Endpoint Overrides
GOOGLE_CLOUD_CPP_PARALLELSTORE_ENDPOINT=... overrides the EndpointOption (which defaults to "parallelstore.googleapis.com") used by MakeParallelstoreConnection().
GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc: turns on tracing for most gRPC calls. The library injects an additional Stub decorator that prints each gRPC request and response. Unless you have configured your own logging backend, you should also set GOOGLE_CLOUD_CPP_ENABLE_CLOG to produce any output on the program's console.
See Also
google::cloud::LoggingComponentsOptionGOOGLE_CLOUD_CPP_TRACING_OPTIONS=...: modifies the behavior of gRPC tracing, including whether messages will be output on multiple lines, or whether string/bytes fields will be truncated.
See Also
google::cloud::GrpcTracingOptionsOptionGOOGLE_CLOUD_CPP_ENABLE_CLOG=yes: turns on logging in the library, basically the library always "logs" but the logging infrastructure has no backend to actually print anything until the application sets a backend or they set this environment variable.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["\u003cp\u003eThis page details environment variables and their functionalities for configuring the behavior of the Parallelstore library, primarily for troubleshooting and customization.\u003c/p\u003e\n"],["\u003cp\u003eYou can override the default endpoint used by \u003ccode\u003eMakeParallelstoreConnection()\u003c/code\u003e via the \u003ccode\u003eGOOGLE_CLOUD_CPP_PARALLELSTORE_ENDPOINT\u003c/code\u003e environment variable.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eGOOGLE_CLOUD_CPP_ENABLE_TRACING\u003c/code\u003e environment variable activates tracing for gRPC calls, printing request and response data.\u003c/p\u003e\n"],["\u003cp\u003eSetting the environment variable \u003ccode\u003eGOOGLE_CLOUD_CPP_ENABLE_CLOG\u003c/code\u003e to \u003ccode\u003eyes\u003c/code\u003e turns on logging in the library, allowing the program to print the logs.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eGOOGLE_CLOUD_PROJECT\u003c/code\u003e environment variable configures the GCP project for examples and tests but does not affect the library's functionality.\u003c/p\u003e\n"]]],[],null,[]]
