(sbt) scala:
import org.apache.spark.SparkContext
import org.apache.spark.SparkConf
import org.apache.spark.sql
object SimpleApp {
def main(args: Array[String]) {
val conf = new SparkConf()
conf.setAppName("mytest").setMaster("spark://Master:7077")
val sc = new SparkContext(conf)
val sqlContext = new sql.SQLContext(sc)
val
d=sqlContext.read.json("/home/hadoop/2015data_test/Data/Data/100808cb11e9898816ef15fcdde4e1d74cbc0b/Db6Jh2XeQ.json")
sc.stop()
}
}
______________________________________________________________________________________________
after sbt package :
./spark-submit --class "SimpleApp"
/home/hadoop/Downloads/sbt/bin/target/scala-2.10/simple-project_2.10-1.0.jar
_______________________________________________________________________________________________
json fIle:
{
"programmers": [
{
"firstName": "Brett",
"lastName": "McLaughlin",
"email": "aaaa"
},
{
"firstName": "Jason",
"lastName": "Hunter",
"email": "bbbb"
},
{
"firstName": "Elliotte",
"lastName": "Harold",
"email": "cccc"
}
],
"authors": [
{
"firstName": "Isaac",
"lastName": "Asimov",
"genre": "sciencefiction"
},
{
"firstName": "Tad",
"lastName": "Williams",
"genre": "fantasy"
},
{
"firstName": "Frank",
"lastName": "Peretti",
"genre": "christianfiction"
}
],
"musicians": [
{
"firstName": "Eric",
"lastName": "Clapton",
"instrument": "guitar"
},
{
"firstName": "Sergei",
"lastName": "Rachmaninoff",
"instrument": "piano"
}
]
}
_______________________________________________________________________________________________
Exception in thread "main" scala.MatchError: StringType (of class
org.apache.spark.sql.types.StringType$)
at org.apache.spark.sql.json.InferSchema$.apply(InferSchema.scala:58)
at
org.apache.spark.sql.json.JSONRelation$$anonfun$schema$1.apply(JSONRelation.scala:139)
_______________________________________________________________________________________________
why????
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