T Poterba created SPARK-20773: --------------------------------- Summary: ParquetWriteSupport.writeFields has is quadratic in number of fields Key: SPARK-20773 URL: https://issues.apache.org/jira/browse/SPARK-20773 Project: Spark Issue Type: Bug Components: SQL Affects Versions: 2.1.1 Reporter: T Poterba Priority: Minor
The writeFields method in ParquetWriteSupport uses Seq.apply(i) to select all elements. Since the fieldWriters object is a List, this is a quadratic operation. See line 123: https://github.com/apache/spark/blob/ac1ab6b9db188ac54c745558d57dd0a031d0b162/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetWriteSupport.scala -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org