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FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':beam-sdks-:python:setupVirtualenv'.
> A problem occurred starting process 'command 'virtualenv''

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• If you are not working on Python, the simplest solution is to not build it, i.e. only build the module that you're interested in.
• If you do need to build Python, follow the instructions here: Set up IntelliJ for Python development

Cannot resolve vendored artifacts (org.apache.beam.vendor.[xyz])

This isn't a build error, but the IntelliJ code editor will show red squigglies and fail to to symbol completion for vendored artifacts.

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This is a short-coming of the Gradle IntelliJ plugin (see IDEA-197980). Because we produce the repackaged artifact and consume it as a dependency within a single multi-project Gradle build, IntelliJ fails when trying to resolve sources. This has been discussed repeatedly on the dev@ list, but no solution yet exists.

• (Jul 2018) Vendoring / Shading Protobuf and gRPC
• (Aug 2018) Status of IntelliJ with Gradle
• (Oct 2018) Re: Does anybody have a strong intellij setup?
• (Oct 2018) [DISCUSS] Publish vendored dependencies independently

Note that this is only an IntelliJ issue; the build works just fine from the command-line. Improving this behavior in IntelliJ is tracked via 

Compilation failed with exit code 1; see the compiler error output for details.

This appears to be caused by poor parsing of the Gradle log by IntelliJ. In the log pane there is a button to toggle to the raw console.

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IntelliJ can't load large files

(stack overflow post)

• In IntelliJ 2016 and higher: go to Help → Edit Custom Properties → Paste the following inside the properties file:

  Code Block
  language text
  #--------------------------------------------------------------------- # Maximum file size (kilobytes) IDE should provide code assistance for. # The larger file is the slower its editor works and higher overall system memory requirements are # if code assistance is enabled. Remove this property or set to very large number if you need # code assistance for any files available regardless their size. #--------------------------------------------------------------------- idea.max.intellisense.filesize=2500

  
  

IntelliJ can't recognize Python files

(stack overflow post):

• Press CTRL + ALT + SHIT + S → Go to Project Settings → Facets → expand Python → click on child → Python Interpreter
• Project Settings → Modules → Expand module → Python → Dependencies → select Python module SDK

TODO: Add more common FAQ issues 

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