scala - "./sbt/sbt assembly" errors "Not a valid command: assembly" for Apache Spark project

Question

I'm having trouble with installing Apache Spark on Ubuntu 13.04. Im using spark-0.8.1-incubating, and both ./sbt/sbt update and ./sbt/sbt compile work fine. However, when I do a ./sbt/sbt assembly I get the following error:

[info] Set current project to default-289e76 (in build  file:/node-insights/server/lib/spark-0.8.1-incubating/sbt/)   
[error] Not a valid command: assembly   
[error] Not a valid project ID: assembly   
[error] Not a valid configuration: assembly   
[error] Not a valid key: assembly   
[error] assembly   
[error]            

I googled for stuff related to this but couldn't find anything useful. Any guidance would be much appreciated.

Answer 1

The current project set to default-289e76 message suggests that sbt was called from outside of the Spark sources directory:

$  /tmp  ./spark-0.8.1-incubating/sbt/sbt assembly
[info] Loading global plugins from /Users/joshrosen/.dotfiles/.sbt/plugins/project
[info] Loading global plugins from /Users/joshrosen/.dotfiles/.sbt/plugins
[info] Set current project to default-d0f036 (in build file:/private/tmp/)
[error] Not a valid command: assembly
[error] Not a valid project ID: assembly
[error] Not a valid configuration: assembly
[error] Not a valid key: assembly
[error] assembly
[error]         ^

Running ./sbt/sbt assembly works fine from the spark-0.8.1-incubating directory (note the log output showing that the current project was set correctly):

$  spark-0.8.1-incubating  sbt/sbt assembly
[info] Loading global plugins from /Users/joshrosen/.dotfiles/.sbt/plugins/project
[info] Loading global plugins from /Users/joshrosen/.dotfiles/.sbt/plugins
[info] Loading project definition from /private/tmp/spark-0.8.1-incubating/project/project
[info] Loading project definition from /private/tmp/spark-0.8.1-incubating/project
[info] Set current project to root (in build file:/private/tmp/spark-0.8.1-incubating/)
...