marios marios - 20 days ago 7
Scala Question

Increase memory in sbt-assembly

Is there a way to increase the memory during assembly (the plugin)? I notice that adding more memory to sbt through SBT_OPTS does't really help. I suspect that assembly is forking a separate JVM that doesn't inherit the JVM configurations from sbt.

Here is the error:


java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: Java heap space


Here is what I tried without much luck:

javaOptions in assembly += "-Xmx2g"

Answer

I suspect that assembly is forking a separate JVM that doesn't inherit the JVM configurations from sbt.

I'm the author of sbt-assembly. assembly does not fork a separate JVM. You can see the code here and check - https://github.com/sbt/sbt-assembly/blob/0.13.0/src/main/scala/sbtassembly/Assembly.scala#L239-L246

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