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Posted to issues@spark.apache.org by "Cheng Lian (JIRA)" <ji...@apache.org> on 2014/05/23 13:24:01 UTC
[jira] [Updated] (SPARK-1913) Column pruning for Parquet table
[ https://issues.apache.org/jira/browse/SPARK-1913?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Cheng Lian updated SPARK-1913:
------------------------------
Description:
When scanning Parquet tables, attributes referenced only in predicates that are pushed down are not passed to the `ParquetTableScan` operator and causes exception. Verified in the {{sbt hive/console}}:
{code}
loadTestTable("src")
table("src").saveAsParquetFile("src.parquet")
parquetFile("src.parquet").registerAsTable("src_parquet")
hql("SELECT value FROM src_parquet WHERE key < 10").collect().foreach(println)
{code}
was:
When scanning Parquet tables, attributes referenced only in predicates that are pushed down are not passed to the `ParquetTableScan` operator and causes exception. Verified in the {{sbt hive/console}}:
{code:java}
loadTestTable("src")
table("src").saveAsParquetFile("src.parquet")
parquetFile("src.parquet").registerAsTable("src_parquet")
hql("SELECT value FROM src_parquet WHERE key < 10").collect().foreach(println)
{code}
> Column pruning for Parquet table
> --------------------------------
>
> 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
>
> When scanning Parquet tables, attributes referenced only in predicates that are pushed down are not passed to the `ParquetTableScan` operator and causes exception. Verified in the {{sbt hive/console}}:
> {code}
> loadTestTable("src")
> table("src").saveAsParquetFile("src.parquet")
> parquetFile("src.parquet").registerAsTable("src_parquet")
> hql("SELECT value FROM src_parquet WHERE key < 10").collect().foreach(println)
> {code}
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