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Revision as of 21:39, 1 March 2014 by Willb (talk | contribs) (Dependencies)

Spark packaging


See Scala packaging for details on Fedora support for the Scala toolchain; briefly, we have version 2.10.3 of Scala in F19, F20, and Rawhide and sbt 0.13.1 is under review in Fedora as well.

Spark 0.9.0 works with Scala 2.10.3, and the upstream source repository currently has support for SBT 0.13.x.

Current Status

Apache Spark is under review in Fedora for rawhide (f21). The Fedora Spark package includes Spark Core, MLLib, GraphX, Bagel, and Spark Streaming, but currently (as of spark-0.9.0-0.2) has some differences from upstream Spark:

  • it builds against Akka 2.3.0-RC2 instead of Akka 2.2.3 (this entails some trivial API changes)
  • it doesn't support Kryo serialization yet (because Chill isn't yet available in Fedora), which limits some Spark Streaming functionality
  • it doesn't support functionality dependent on Clearspring stream-lib, since stream-lib depends on bundled code and can't yet be packaged for Fedora; most notably, the countApproxDistinctByKey methods on RDDs aren't supported.
  • it doesn't support Mesos, since the Fedora Mesos package doesn't include Java support
  • Spark is not built as a monolithic assembly jar (since this isn't compatible with Fedora guidelines)

We're working on addressing the limitations and bringing other Spark-related projects to Fedora.

Most of the Scala packages build with tests disabled (due to unavailable test dependencies) or with varying degrees of modification to the upstream build process (due to varying dependency versions or unavailable sbt plugins). If you're looking for an easy way to get involved, packaging some of these missing dependencies would be a great place to start. See the list under Scala packaging or find willb on IRC for more information


Spark requires Scala and SBT in order to build. (Note that there is a Maven build option as well, but it requires artifacts that need to be built with SBT.)

The easiest and most up-to-date place to see the dependency list is in the Spark repository itself, but here we will call out some notable dependencies that aren't already in Fedora:


Project State Review BZ Packager Notes
sbt available in F20 and rawhide sbt-package BZ willb
lift-json Not necessary any more with this patch (either carried or integrated into upstream) willb
json4s available in f20 and rawhide json4s-package BZ willb
akka available to review 1069871 willb (with gil)
Squeryl awaiting a reviewer 1057770 willb dependency of lift; no longer strictly necessary but still nice to have for the Scala ecosystem
scalaz available in f20 and rawhide 1055809 willb dependency of lift-json; no longer strictly necessary but still nice to have for the Scala ecosystem
metrics available in F20 861502 gil Coda Hale's metrics (Java/Maven build).
stream-lib see here; required for approximate set cardinality functionality; not packaged yet because it depends on a Bloom filter implementation bundled and forked from Cassandra
chill see here; required for Kryo-based serializers and some streaming functionality