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Implement per-shim parallel world jar classloader #3381

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merged 21 commits into from Sep 10, 2021
Merged

Implement per-shim parallel world jar classloader #3381

merged 21 commits into from Sep 10, 2021

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gerashegalov
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@gerashegalov gerashegalov commented Sep 3, 2021 •
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Signed-off-by: Gera Shegalov gera@apache.org

Contributes to #3232. Use MutableURLClassLoader in conjunction with JarURLConnection JAR URLs to create "parallel worlds" for each shim in a single jar file.

Assumes a package layout consisting of three types of areas

  • a few publicly documented classes in the conventional layout
  • a large fraction of classes whose bytecode is identical under all supported Spark versions
  • a smaller fraction of classes that differ under one of the supported Spark versions, aka "parallel worlds" in the JDK's com.sun.istack.internal.tools.ParallelWorldClassLoader terminology
$ jar tvf rapids-4-spark_2.12.jar
com/nvidia/spark/SQLPlugin.class
spark3xx-common/com/nvidia/spark/rapids/CastExprMeta.class
spark301/org/apache/spark/sql/rapids/GpuUnaryMinus.class    
spark311/org/apache/spark/sql/rapids/GpuUnaryMinus.class
spark320/org/apache/spark/sql/rapids/GpuUnaryMinus.class

@gerashegalov
Parallel world ServiceLoader
07526a3 
Signed-off-by: Gera Shegalov <gera@apache.org>
@gerashegalov
Implement per-shim parallel world jar classloader
a8f5949 
Signed-off-by: Gera Shegalov <gera@apache.org>
@gerashegalov gerashegalov self-assigned this Sep 3, 2021
@gerashegalov gerashegalov added this to the Aug 30 - Sept 10 milestone Sep 3, 2021
@gerashegalov gerashegalov added this to In progress in Release 21.10 via automation Sep 3, 2021
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@sameerz sameerz added the task Work required that improves the product but is not user facing label Sep 3, 2021
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This was referenced Sep 4, 2021
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revans2
revans2 reviewed Sep 7, 2021
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sql-plugin/src/main/scala/com/nvidia/spark/SQLPlugin.scala Outdated Show resolved Hide resolved
sql-plugin/src/main/scala/com/nvidia/spark/rapids/Plugin.scala
val sparkConf = pluginContext.conf
RapidsPluginUtils.fixupConfigs(sparkConf)
val conf = new RapidsConf(sparkConf)
if (conf.shimsProviderOverride.isDefined) {
if (conf.shimsProviderOverride.isDefined) { // TODO test it, probably not working yet
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Have you tested this yet?

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not yet

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actually hard to test before I can pull @tgravescs's change

sql-plugin/src/main/scala/com/nvidia/spark/rapids/SQLExecPlugin.scala Outdated Show resolved Hide resolved
sql-plugin/src/main/scala/com/nvidia/spark/rapids/ShimLoader.scala Show resolved Hide resolved
sql-plugin/src/main/scala/com/nvidia/spark/rapids/ShimLoader.scala Outdated Show resolved Hide resolved
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I'm assuming you haven't tested on Databricks unless I'm out of date, I pulled this branch into my branch with dist packaging changes and it fails. I have fixed it on my branch if we want to wait but we should probably put this and that in close together.

Release 21.10 automation moved this from Reviewer approved to Review in progress Sep 9, 2021
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tgravescs previously approved these changes Sep 9, 2021
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Release 21.10 automation moved this from Review in progress to Reviewer approved Sep 9, 2021
Release 21.10 automation moved this from Reviewer approved to Review in progress Sep 9, 2021
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Release 21.10 automation moved this from Review in progress to Reviewer approved Sep 9, 2021
@gerashegalov gerashegalov merged commit 1172350 into NVIDIA:branch-21.10 Sep 10, 2021
Release 21.10 automation moved this from Reviewer approved to Done Sep 10, 2021
@gerashegalov gerashegalov deleted the shimLoader320 branch September 10, 2021 00:12
@gerashegalov gerashegalov linked an issue Sep 13, 2021 that may be closed by this pull request
[FEA] create the plugin package capable of storing conflicting multiple versions of same named classes #3232
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@gerashegalov gerashegalov mentioned this pull request Sep 13, 2021
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@gerashegalov gerashegalov mentioned this pull request Sep 27, 2021
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@gerashegalov gerashegalov mentioned this pull request Dec 6, 2022
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@gerashegalov gerashegalov mentioned this pull request Jan 10, 2023
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@revans2 revans2 revans2 left review comments

@tgravescs tgravescs tgravescs approved these changes

@GaryShen2008 GaryShen2008 Awaiting requested review from GaryShen2008 GaryShen2008 is a code owner

@jlowe jlowe Awaiting requested review from jlowe jlowe is a code owner

@NvTimLiu NvTimLiu Awaiting requested review from NvTimLiu NvTimLiu is a code owner

@abellina abellina Awaiting requested review from abellina

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Spark 3.2+ task Work required that improves the product but is not user facing
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Release 21.10
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[FEA] create the plugin package capable of storing conflicting multiple versions of same named classes
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@gerashegalov @tgravescs @abellina @revans2 @sameerz