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https://issues.apache.org/jira/browse/SPARK-8907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-8907.
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Resolution: Fixed
Assignee: Cheng Lian
Fix Version/s: 1.5.0
> Speed up path construction in
> DynamicPartitionWriterContainer.outputWriterForRow
> --------------------------------------------------------------------------------
>
> Key: SPARK-8907
> URL: https://issues.apache.org/jira/browse/SPARK-8907
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
> Assignee: Cheng Lian
> Fix For: 1.5.0
>
>
> Don't use zip and scala collection methods to avoid garbage collection
> {code}
> val partitionPath = partitionColumns.zip(row.toSeq).map { case (col,
> rawValue) =>
> val string = if (rawValue == null) null else String.valueOf(rawValue)
> val valueString = if (string == null || string.isEmpty) {
> defaultPartitionName
> } else {
> PartitioningUtils.escapePathName(string)
> }
> s"/$col=$valueString"
> }.mkString.stripPrefix(Path.SEPARATOR)
> {code}
> We can probably use catalyst expressions themselves to construct the path,
> and then we can leverage code generation to do this.
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