http://apache-carbondata-dev-mailing-list-archive.168.s1.nabble.com/Throw-NoSuchElementException-None-get-error-when-use-CarbonSession-to-read-parquet-tp68467p68524.html
> Hi:
> Please help. I used CarbonSession to read parquet and it throws
> 'NoSuchElementException: None.get' error, reading carbondata files is ok.
> *Env*: local mode, Spark 2.3 + CarbonData(master branch)
> *Code*:
> import org.apache.spark.sql.CarbonSession._
> val spark = SparkSession
> .builder()
> .master("local[1]")
> .appName("Carbon1_5")
> .config("spark.sql.warehouse.dir", warehouse)
> .config("spark.default.parallelism", 4)
> .config("spark.sql.shuffle.partitions", 4)
> .getOrCreateCarbonSession(storeLocation, Constants.METASTORE_DB)
> spark.conf.set("spark.sql.parquet.binaryAsString", true)
> val parquets = spark.read.parquet("/data1/parquets/")
> println(parquets.count())
>
> *Error*:
> Exception in thread "main" java.util.ServiceConfigurationError:
> org.apache.spark.sql.sources.DataSourceRegister: Provider
> org.apache.spark.sql.carbondata.execution.datasources.SparkCarbonFileFormat
> could not be instantiated
> at java.util.ServiceLoader.fail(ServiceLoader.java:232)
> at java.util.ServiceLoader.access$100(ServiceLoader.java:185)
> at
> java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:384)
> at
> java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404)
> at java.util.ServiceLoader$1.next(ServiceLoader.java:480)
> at
> scala.collection.convert.Wrappers$JIteratorWrapper.next(Wrappers.scala:43)
> at scala.collection.Iterator$class.foreach(Iterator.scala:742)
> at scala.collection.AbstractIterator.foreach(Iterator.scala:1194)
> at
> scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
> at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
> at
>
> scala.collection.TraversableLike$class.filterImpl(TraversableLike.scala:258)
> at
> scala.collection.TraversableLike$class.filter(TraversableLike.scala:270)
> at
> scala.collection.AbstractTraversable.filter(Traversable.scala:104)
> at
>
> org.apache.spark.sql.execution.datasources.DataSource$.lookupDataSource(DataSource.scala:618)
> at
> org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:190)
> at
> org.apache.spark.sql.DataFrameReader.parquet(DataFrameReader.scala:622)
> at
> org.apache.spark.sql.DataFrameReader.parquet(DataFrameReader.scala:606)
> at
> cn.xm.zzc.carbonmaster.Carbon1_5$.testReadSpeed(Carbon1_5.scala:434)
> at cn.xm.zzc.carbonmaster.Carbon1_5$.main(Carbon1_5.scala:105)
> at cn.xm.zzc.carbonmaster.Carbon1_5.main(Carbon1_5.scala)
> Caused by: java.util.NoSuchElementException: None.get
> at scala.None$.get(Option.scala:347)
> at scala.None$.get(Option.scala:345)
> at
>
> org.apache.spark.sql.carbondata.execution.datasources.SparkCarbonFileFormat.<init>(SparkCarbonFileFormat.scala:120)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
> at
>
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at
>
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
> at java.lang.Class.newInstance(Class.java:442)
> at
> java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:380)
> ... 17 more
>
> Thanks.
>
>
>
> --
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