scala - Is it necessary to "clean" SBT before "stage" for production builds? -

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we using jenkins , sbt pluging build, test , deploy our application. see everywhere people use "clean" command before "test" or "stage" leads long compile times.

is necessary clean each build? risk of using incremental compiler production builds?

if build script and/or command line sbt have not changed should not necessary clean.

i have been using spark several years - , 1 of complex sbt builds can find. works fine avoid doing clean long build process (as embodied in project/sbt build artifacts , sbt command line) same previous runs.


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