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https://issues.apache.org/jira/browse/SPARK-1913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14007026#comment-14007026
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Cheng Lian commented on SPARK-1913:
-----------------------------------
Attributes referenced only in those filters that are pushed down are not
considered when building the {{ParquetTableScan}} operator in
{{ParquetOperations}}. Will submit a PR for this.
> column pruning problem of Parquet File
> ---------------------------------------
>
> Key: SPARK-1913
> URL: https://issues.apache.org/jira/browse/SPARK-1913
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.0.0
> Environment: mac os 10.9.2
> Reporter: Chen Chao
>
> case class Person(name: String, age: Int)
> if we use Parquet file, the following statement will throw a exception says
> java.lang.IllegalArgumentException: Column age does not exist.
> sql("SELECT name FROM parquetFile WHERE age >= 13 AND age <= 19")
> we have to add age column after SELECT in order to make it right:
> sql("SELECT name , age FROM parquetFile WHERE age >= 13 AND age <= 19")
> The same error also occurs when we use DSL:
> parquetFile.where('key === 1).select('value as 'a).collect().foreach(println)
> will tell us can not find column 'key',we have to fix like this :
> parquetFile.where('key === 1).select('key ,'value as
> 'a).collect().foreach(println)
> Obviously, that's not the way we want!
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