ltapilot commented on a change in pull request #170: Fixed CLI integration 
tests so that they run properly on Windows.
URL: https://github.com/apache/incubator-daffodil/pull/170#discussion_r251567248
 
 

 ##########
 File path: build.sbt
 ##########
 @@ -139,6 +139,7 @@ lazy val commonSettings = Seq(
   sourceManaged := baseDirectory.value / "src_managed",
   resourceManaged := baseDirectory.value / "resource_managed",
   libraryDependencies ++= Dependencies.common,
+  parallelExecution in IntegrationTest := false
 
 Review comment:
   I spent a couple of hours messing with this today. It turns out that the 
platform doesn't do a good enough job of predicting memory usage. Subsequently 
it starts too many tests in parallel and when the tests all ask for large 
blocks of RAM serious memory pressure builds at the system level. In my case 
the system even ran out of swap space. My system has 16GB of RAM and it is 
clear that this should still be able to run on systems with less than that. For 
these reasons I'm going to leave parallel execution OFF in this pull request. I 
wish it were not so, but I think that's the only way we're going to get this to 
run consistently and without failure. Sorry.

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