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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2015/08/07 07:46:45 UTC
[jira] [Assigned] (SPARK-9733) Improve explain message for data
source scan node
[ https://issues.apache.org/jira/browse/SPARK-9733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-9733:
-----------------------------------
Assignee: Reynold Xin (was: Apache Spark)
> Improve explain message for data source scan node
> -------------------------------------------------
>
> Key: SPARK-9733
> URL: https://issues.apache.org/jira/browse/SPARK-9733
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Reynold Xin
> Assignee: Reynold Xin
>
> All data sources show up as "PhysicalRDD" in physical plan explain. It'd be better if we can show the name of the data source.
> Existing:
> {code}
> == Physical Plan ==
> NewAggregate with UnsafeHybridAggregationIterator ArrayBuffer(date#0, cat#1) ArrayBuffer((sum(CAST((CAST(count#2, IntegerType) + 1), LongType))2,mode=Final,isDistinct=false))
> Exchange hashpartitioning(date#0,cat#1)
> NewAggregate with UnsafeHybridAggregationIterator ArrayBuffer(date#0, cat#1) ArrayBuffer((sum(CAST((CAST(count#2, IntegerType) + 1), LongType))2,mode=Partial,isDistinct=false))
> PhysicalRDD [date#0,cat#1,count#2], MapPartitionsRDD[3] at
> {code}
> Better version:
> {code}
> == Physical Plan ==
> TungstenAggregate(key=[date#0,cat#1], value=[(sum(CAST((CAST(count#2, IntegerType) + 1), LongType)),mode=Final,isDistinct=false)]
> Exchange hashpartitioning(date#0,cat#1)
> TungstenAggregate(key=[date#0,cat#1], value=[(sum(CAST((CAST(count#2, IntegerType) + 1), LongType)),mode=Partial,isDistinct=false)]
> ConvertToUnsafe
> Scan ParquetRelation[file:/scratch/rxin/spark/sales4][date#0,cat#1,count#2]
> {code}
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