note: I am running sbt 1.0.4 in this example

SBT v.1 upgrade issue #1

If you are running sbt version 1.x and encounter the following error while running any sbt command:

No Java Development Kit (JDK) installation was detected.

It may be because your shell profile has custom GREP_OPTIONS which are preventing the sbt launcher from properly parsing your JDK version from a grep command.

Here’s the source code which contains the grep command which was breaking things for me: github sbt code

Solution 1: disable GREP_OPTIONS in your bash profile.

Solution 2: use Gradle instead

–

SBT v.1 upgrade issue #2

If you are running sbt version 1.x and encounter the following error while running any sbt job:

java.lang.OutOfMemoryError: Metaspace

You can increase the jvm memory allotment by passing the following flag while running any sbt command:

sbt -mem 2018

If you are using sbt on OSX installed via Homebrew you can also edit the following file to make the setting permanent:

/usr/local/etc/sbtopts

Just uncomment the following and add your new setting:

# set memory options
#
#-mem   <integer>