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Posted to issues@spark.apache.org by "Michael Armbrust (JIRA)" <ji...@apache.org> on 2015/12/21 22:48:46 UTC
[jira] [Resolved] (SPARK-12374) Improve performance of Range APIs
via adding logical/physical operators
[ https://issues.apache.org/jira/browse/SPARK-12374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael Armbrust resolved SPARK-12374.
--------------------------------------
Resolution: Fixed
Fix Version/s: 2.0.0
Issue resolved by pull request 10335
[https://github.com/apache/spark/pull/10335]
> Improve performance of Range APIs via adding logical/physical operators
> -----------------------------------------------------------------------
>
> Key: SPARK-12374
> URL: https://issues.apache.org/jira/browse/SPARK-12374
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.6.0
> Reporter: Xiao Li
> Assignee: Apache Spark
> Priority: Critical
> Fix For: 2.0.0
>
>
> Creating an actual logical/physical operator for range for matching the performance of RDD Range APIs.
> Compared with the old Range API, the new version is 3 times faster than the old version.
> {code}
> scala> val startTime = System.currentTimeMillis; sqlContext.oldRange(0, 1000000000, 1, 15).count(); val endTime = System.currentTimeMillis; val start = new Timestamp(startTime); val end = new Timestamp(endTime); val elapsed = (endTime - startTime)/ 1000.0
> startTime: Long = 1450416394240
> endTime: Long = 1450416421199
> start: java.sql.Timestamp = 2015-12-17 21:26:34.24
> end: java.sql.Timestamp = 2015-12-17 21:27:01.199
> elapsed: Double = 26.959
> {code}
> {code}
> scala> val startTime = System.currentTimeMillis; sqlContext.range(0, 1000000000, 1, 15).count(); val endTime = System.currentTimeMillis; val start = new Timestamp(startTime); val end = new Timestamp(endTime); val elapsed = (endTime - startTime)/ 1000.0
> startTime: Long = 1450416360107
> endTime: Long = 1450416368590
> start: java.sql.Timestamp = 2015-12-17 21:26:00.107
> end: java.sql.Timestamp = 2015-12-17 21:26:08.59
> elapsed: Double = 8.483
> {code}
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