Unreal Engine Issues

UE-51472

Hot reload iteration time regression.

Hot reload iteration time regression.

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Description

Hot reload iteration times have been crippled ever since CL# 3332960, which was a fix for [Link Removed].

Steps to Reproduce
  • Load QAGameEditor.
  • Add a space to QATestActor.cpp.
  • Hit Compile in the editor.
  • Note in the output that UnrealHeaderTool gets rerun even though no header has changed.

Expected: hot reload occurs successfully without UnrealHeaderTool rerunning on .cpp file changes, and that the error in [Link Removed] does not recur.

Community References

Hot reloading significantly slower in 4.17? (3sec->13.5sec)

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Fixed
ComponentUE - Foundation - Core
Affects Versions4.17
Target Fix4.18.1
Fix Commit3713811
Main Commit3805231
CreatedOct 19, 2017
ResolvedOct 23, 2017
UpdatedApr 27, 2018
Pull Requests
4447 - klorberg