Liang-Chi Hsieh created SPARK-15211:
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Summary: Select features column from LibSVMRelation causes failure
Key: SPARK-15211
URL: https://issues.apache.org/jira/browse/SPARK-15211
Project: Spark
Issue Type: Bug
Components: SQL
Reporter: Liang-Chi Hsieh
It will cause failure when trying to load data with LibSVMRelation and select
features column:
{code}
val df2 = spark.read.format("libsvm").load("data/mllib/sample_libsvm_data.txt")
df: org.apache.spark.sql.DataFrame = [label: double, features: vector]
scala> df2.select("features").show
java.lang.RuntimeException: Error while decoding: scala.MatchError: 19 (of
class java.lang.Byte)
createexternalrow(if (isnull(input[0, vector])) null else newInstance(class
org.apache.spark.mllib.linalg.VectorUDT).deserialize,
StructField(features,org.apache.spark.mllib.linalg.VectorUDT@f71b0bce,true))
...
{code}
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