You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@spark.apache.org by "John Muller (JIRA)" <ji...@apache.org> on 2016/09/14 15:02:20 UTC
[jira] [Created] (SPARK-17536) Minor performance improvement to
JDBC batch inserts
John Muller created SPARK-17536:
-----------------------------------
Summary: Minor performance improvement to JDBC batch inserts
Key: SPARK-17536
URL: https://issues.apache.org/jira/browse/SPARK-17536
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.0.0
Reporter: John Muller
Priority: Trivial
JDBC batch inserts currently are set to repeatedly retrieve the number of fields inside the row iterator:
https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JdbcUtils.scala#L598
val numFields = rddSchema.fields.length
This value does not change and can be set prior to the loop.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org