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following https://medium.com/@gayani.nan/how-to-run-a-scalding-job-567160fa193
running on my laptop:
openjdk version "1.8.0_171"
OpenJDK Runtime Environment (build 1.8.0_171-8u171-b11-1~deb9u1-b11)
OpenJDK 64-Bit Server VM (build 25.171-b11, mixed mode)
Scala code runner version 2.11.8 -- Copyright 2002-2016, LAMP/EPFL
sbt: 1.1.5
sbt new scala/scala-seed.g8
# inserted additional deps, tweaked versions
# hadoop 2.5.0 seems to conflict with cascading; sticking with 2.6.0
sbt assembly
scp target/scala-2.11/scald-mvp-assembly-0.1.0-SNAPSHOT.jar devbox:
# on cluster:
yarn jar scald-mvp-assembly-0.1.0-SNAPSHOT.jar WordCount --hdfs --input hdfs:///user/bnewbold/dummy.txt
later, using hadop command instead:
hadoop jar scald-mvp-assembly-0.1.0-SNAPSHOT.jar com.twitter.scalding.Tool example.WordCountJob --hdfs --input hdfs:///user/bnewbold/dummy.txt --output hdfs:///user/bnewbold/test_scalding_out3
helpful for debugging dependency woes:
sbt dependencyTree
## Custom build
in SpyGlass repo:
# This builds the new .jar and installs it in the (laptop local) ~/.m2
# repository
mvn clean install -U
# Copy that .jar (and associated pom.xml) over to where sbt can find it
mkdir -p ~/.sbt/preloaded/parallelai/
cp -r ~/.m2/repository/parallelai/parallelai.spyglass ~/.sbt/preloaded/parallelai/
# then build here
sbt assembly
The medium-term plan here is to push the custom SpyGlass jar as a static maven
repo to an archive.org item, and point build.sbt to that folder.
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