Reynold Xin created SPARK-8907:
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Summary: 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
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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