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    Check if the field you try to read really exists in the database. If it is optional, just use com.mongodb.casbah.commons.MongoDBObject#getAs

Solutions on the web

via Stack Overflow by mvg
, 1 year ago
key not found: StructType(StructField(user,IntegerType,false), StructField(product,IntegerType,false), StructField(rating,DoubleType,false))
via GitHub by ninadingole
, 2 months ago
key not found: Repository.scala
via GitHub by laurayuwen
, 2 years ago
key not found: MetaVariable
via Stack Overflow by FelixHJ
, 1 year ago
key not found: blergh
via GitHub by enshahar
, 1 year ago
key not found: mistress
java.util.NoSuchElementException: key not found: StructType(StructField(user,IntegerType,false), StructField(product,IntegerType,false), StructField(rating,DoubleType,false))	at scala.collection.MapLike$class.default(MapLike.scala:228)	at scala.collection.AbstractMap.default(Map.scala:59)	at scala.collection.MapLike$class.apply(MapLike.scala:141)	at scala.collection.AbstractMap.apply(Map.scala:59)	at org.apache.spark.h2o.utils.ReflectionUtils$.vecTypeFor(ReflectionUtils.scala:132)	at org.apache.spark.h2o.converters.SparkDataFrameConverter$$anonfun$3.apply(SparkDataFrameConverter.scala:68)	at org.apache.spark.h2o.converters.SparkDataFrameConverter$$anonfun$3.apply(SparkDataFrameConverter.scala:68)	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)	at scala.collection.Iterator$class.foreach(Iterator.scala:893)	at scala.collection.AbstractIterator.foreach(Iterator.scala:1336)	at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)	at scala.collection.AbstractIterable.foreach(Iterable.scala:54)	at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)	at scala.collection.AbstractTraversable.map(Traversable.scala:104)	at org.apache.spark.h2o.converters.SparkDataFrameConverter$.toH2OFrame(SparkDataFrameConverter.scala:68)	at org.apache.spark.h2o.H2OContext.asH2OFrame(H2OContext.scala:132)	at org.apache.spark.h2o.H2OContext.asH2OFrame(H2OContext.scala:130)	at com.poc.sample.RecommendataionAlgo$.main(RecommendataionAlgo.scala:54)	at com.poc.sample.RecommendataionAlgo.main(RecommendataionAlgo.scala)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)