{"step":enum (MigrationStep),// Union fieldstep_detailscan be only one of the following:"prepareStepDetails":{object (PrepareStepDetails)},"redirectWritesStepDetails":{object (RedirectWritesStepDetails)}// End of list of possible types for union fieldstep_details.}
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-04-30 UTC."],[[["\u003cp\u003eThis document details the structure and content of an event that signals the start of a step in a migration from Cloud Datastore to Cloud Firestore in Datastore mode.\u003c/p\u003e\n"],["\u003cp\u003eThe event includes a \u003ccode\u003estep\u003c/code\u003e field indicating the type of step being initiated, such as \u003ccode\u003eSTART\u003c/code\u003e, and a \u003ccode\u003estep_details\u003c/code\u003e field, which provides further details specific to the step.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003estep_details\u003c/code\u003e field can contain either \u003ccode\u003eprepareStepDetails\u003c/code\u003e for the \u003ccode\u003ePREPARE\u003c/code\u003e step or \u003ccode\u003eredirectWritesStepDetails\u003c/code\u003e for the \u003ccode\u003eREDIRECT_WRITES\u003c/code\u003e step.\u003c/p\u003e\n"],["\u003cp\u003eBoth \u003ccode\u003eprepareStepDetails\u003c/code\u003e and \u003ccode\u003eredirectWritesStepDetails\u003c/code\u003e include a \u003ccode\u003econcurrencyMode\u003c/code\u003e field, specifying the concurrency mode to be used by the database when it reaches the \u003ccode\u003eREDIRECT_WRITES\u003c/code\u003e step or general concurrency for the database, respectively.\u003c/p\u003e\n"]]],[],null,["# MigrationProgressEvent\n\n- [JSON representation](#SCHEMA_REPRESENTATION)\n- [PrepareStepDetails](#PrepareStepDetails)\n - [JSON representation](#PrepareStepDetails.SCHEMA_REPRESENTATION)\n- [RedirectWritesStepDetails](#RedirectWritesStepDetails)\n - [JSON representation](#RedirectWritesStepDetails.SCHEMA_REPRESENTATION)\n\nAn event signifying the start of a new step in a [migration from Cloud Datastore to Cloud Firestore in Datastore mode](https://cloud.google.com/datastore/docs/upgrade-to-firestore).\n\nPrepareStepDetails\n------------------\n\nDetails for the `PREPARE` step.\n\nRedirectWritesStepDetails\n-------------------------\n\nDetails for the `REDIRECT_WRITES` step."]]
