You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2018/12/10 07:12:00 UTC
[jira] [Commented] (SPARK-26316) Because of the perf degradation in TPC-DS, we currently partial revert SPARK-21052：Add hash map metrics to join,
[ https://issues.apache.org/jira/browse/SPARK-26316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16714367#comment-16714367 ]
Apache Spark commented on SPARK-26316:
--------------------------------------
User 'JkSelf' has created a pull request for this issue:
https://github.com/apache/spark/pull/23269
> Because of the perf degradation in TPC-DS, we currently partial revert SPARK-21052：Add hash map metrics to join,
> ----------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-26316
> URL: https://issues.apache.org/jira/browse/SPARK-26316
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.3.0, 2.3.1, 2.3.2, 2.4.0
> Reporter: Ke Jia
> Priority: Major
>
> The code of [L486|https://github.com/apache/spark/blob/1d3dd58d21400b5652b75af7e7e53aad85a31528/sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashedRelation.scala#L486] and [L487|https://github.com/apache/spark/blob/1d3dd58d21400b5652b75af7e7e53aad85a31528/sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashedRelation.scala#L487] in SPARK-21052 cause performance degradation in spark2.3. The result of all queries in TPC-DS with 1TB is in [TPC-DS result|https://docs.google.com/spreadsheets/d/18a5BdOlmm8euTaRodyeWum9yu92mbWWu6JbhGXtr7yE/edit#gid=0]
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org