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From "Liang-Chi Hsieh (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-27779) Regression when explode on map in Generate
Date Mon, 20 May 2019 15:44:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-27779?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Liang-Chi Hsieh updated SPARK-27779:
------------------------------------
    Description: 
When I ran MiscBenchmark for SPARK-27707, I found a regression regarding explode map:

{code}
OpenJDK 64-Bit Server VM 1.8.0_212-8u212-b03-0ubuntu1.18.04.1-b03 on Linux 4.15.0-1021-aws
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
generate explode map:                     Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)
  Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
generate explode map wholestage off               50273          51458        1676       
  0.3        2996.5       1.0X
generate explode map wholestage on                43113          43351         278       
  0.4        2569.8       1.2X
{code}

I got this benchmark result by running MiscBenchmark on current master. All benchmark result
is at https://gist.github.com/viirya/c850b49e364e8e6aaa6271ae9e3343fc

The last committed benchmark number in MiscBenchmark-results.txt:
{code}
OpenJDK 64-Bit Server VM 1.8.0_181-b13 on Linux 3.10.0-862.3.2.el7.x86_64
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
generate explode map:                    Best/Avg Time(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------
generate explode map wholestage off         22128 / 22578          0.8        1318.9     
 1.0X
generate explode map wholestage on          16421 / 16520          1.0         978.8     
 1.3X
{code}

It looks significant regression, if I don't miss something.

Maybe others can also help verify if there is really a regression. 



  was:
When I ran MiscBenchmark for SPARK-27707, I found a regression regarding explode map:

{code}
OpenJDK 64-Bit Server VM 1.8.0_212-8u212-b03-0ubuntu1.18.04.1-b03 on Linux 4.15.0-1021-aws
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
generate explode map:                     Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)
  Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
generate explode map wholestage off               50273          51458        1676       
  0.3        2996.5       1.0X
generate explode map wholestage on                43113          43351         278       
  0.4        2569.8       1.2X
{code}

I got this benchmark result by running MiscBenchmark on current master. All benchmark result
is at https://gist.github.com/viirya/c850b49e364e8e6aaa6271ae9e3343fc

The last committed benchmark number in MiscBenchmark-results.txt:
{code}
OpenJDK 64-Bit Server VM 1.8.0_181-b13 on Linux 3.10.0-862.3.2.el7.x86_64
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
generate explode map:                    Best/Avg Time(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------
generate explode map wholestage off         22128 / 22578          0.8        1318.9     
 1.0X
generate explode map wholestage on          16421 / 16520          1.0         978.8     
 1.3X
{code}

It looks significant regression, if I don't miss something.

Maybe others can also verify if there is really a regression. 




> Regression when explode on map in Generate
> ------------------------------------------
>
>                 Key: SPARK-27779
>                 URL: https://issues.apache.org/jira/browse/SPARK-27779
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Liang-Chi Hsieh
>            Priority: Major
>
> When I ran MiscBenchmark for SPARK-27707, I found a regression regarding explode map:
> {code}
> OpenJDK 64-Bit Server VM 1.8.0_212-8u212-b03-0ubuntu1.18.04.1-b03 on Linux 4.15.0-1021-aws
> Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
> generate explode map:                     Best Time(ms)   Avg Time(ms)   Stdev(ms)  
 Rate(M/s)   Per Row(ns)   Relative
> ------------------------------------------------------------------------------------------------------------------------
> generate explode map wholestage off               50273          51458        1676  
       0.3        2996.5       1.0X
> generate explode map wholestage on                43113          43351         278  
       0.4        2569.8       1.2X
> {code}
> I got this benchmark result by running MiscBenchmark on current master. All benchmark
result is at https://gist.github.com/viirya/c850b49e364e8e6aaa6271ae9e3343fc
> The last committed benchmark number in MiscBenchmark-results.txt:
> {code}
> OpenJDK 64-Bit Server VM 1.8.0_181-b13 on Linux 3.10.0-862.3.2.el7.x86_64
> Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
> generate explode map:                    Best/Avg Time(ms)    Rate(M/s)   Per Row(ns)
  Relative
> ------------------------------------------------------------------------------------------------
> generate explode map wholestage off         22128 / 22578          0.8        1318.9
      1.0X
> generate explode map wholestage on          16421 / 16520          1.0         978.8
      1.3X
> {code}
> It looks significant regression, if I don't miss something.
> Maybe others can also help verify if there is really a regression. 



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