RFR: Fix NullPointerException on a parallel run [v4]

Jan Kratochvil duke at openjdk.org
Thu Sep 1 08:11:40 UTC 2022 

> Error: Unexpected exception occurred! java.lang.NullPointerException
> java.lang.NullPointerException
> 	at com.sun.javatest.regtest.config.TestProperties$Cache.getEntryInternal(TestProperties.java:515)
> 	at com.sun.javatest.regtest.config.TestProperties$Cache.getEntryInternal(TestProperties.java:515)
> 	at com.sun.javatest.regtest.config.TestProperties$Cache.getEntry(TestProperties.java:502)
> 	at com.sun.javatest.regtest.config.TestProperties.getEntry(TestProperties.java:170)
> 	at com.sun.javatest.regtest.config.TestProperties.getTestNGRoot(TestProperties.java:123)
> 	at com.sun.javatest.regtest.config.RegressionTestFinder.scanFile(RegressionTestFinder.java:143)
> 	at com.sun.javatest.finder.TagTestFinder.scan(TagTestFinder.java:115)
> 	at com.sun.javatest.TestFinder.read(TestFinder.java:433)
> 	at com.sun.javatest.TRT_TreeNode.processFile(TRT_TreeNode.java:1259)
> 	at com.sun.javatest.TRT_TreeNode.scanIfNeeded(TRT_TreeNode.java:807)
> 	at com.sun.javatest.TRT_TreeNode.getTreeNode(TRT_TreeNode.java:616)
> 	at com.sun.javatest.TestResultTable.findNode(TestResultTable.java:400)
> 	at com.sun.javatest.TestResultTable.lookupNode(TestResultTable.java:533)
> 	at com.sun.javatest.TestResultTable.lookupInitURL(TestResultTable.java:571)
> 	at com.sun.javatest.TestResultTable.validatePath(TestResultTable.java:1000)
> 	at com.sun.javatest.regtest.config.TestManager.validatePath(TestManager.java:299)
> 	at com.sun.javatest.regtest.config.TestManager.getTests(TestManager.java:271)
> 	at com.sun.javatest.regtest.tool.Tool.createParameters(Tool.java:1659)
> 	at com.sun.javatest.regtest.tool.Tool.run(Tool.java:1293)
> 	at com.sun.javatest.regtest.tool.Tool.run(Tool.java:1082)
> 	at com.sun.javatest.regtest.tool.Tool.main(Tool.java:155)
> 	at com.sun.javatest.regtest.Main.main(Main.java:46)
> 
> 
> Some debug output showing the problem:
> 
> 	scanIfNeeded getRootRelativePath= separator=/ filesToScan[i]=resultdir
> 	processFile file=/resultdir isAbsolute=true
> 	TestFinder.java read file=/resultdir isAbsolute=true
> 	scanFile caller file=/resultdir
> 	scanFile File=/resultdir
> 	TestProperties.java:dir=/ rootDir=/home/azul/azul/zulu11-git/test/hotspot/jtreg file2=/resultdir file2.getParentFile()=/
> 	TestProperties.java:dir=null rootDir=/home/azul/azul/zulu11-git/test/hotspot/jtreg file2=/resultdir file2.getParentFile()=/
> 
> This happens with jtreg using `-w:resultdir` . `getRootRelativePath()` returns empty `""` path. Other option would be to return `"."` but in such case it broke some other code.
> 
> This problem does not happen during a single run. It happens only when jtreg is being run in parallel, in my case:
> 
> 	seq 1 100000|xargs -n1 -P64 ./runtest
> 	#! /bin/bash
> 	dir=result-test$$
> 	rm -rf $dir
> 	mkdir $dir
> 	set -o pipefail
> 	(JAVA_HOME=$HOME/azul/zulu11-git/build/linux-x86_64-normal-server-release/images/jdk/; $JAVA_HOME/bin/java -classpath $HOME/azul/jtreg/build/images/jtreg/lib/jtreg.jar:$HOME/azul/jtreg/build/images/jtreg/lib/javatest.jar:$HOME/azul/jtreg/build/images/jtreg/lib/asmtools.jar com.sun.javatest.regtest.Main -testjdk:$JAVA_HOME -othervm -verbose -ignore:quiet -retain:all -a -conc:1 -timeout:10 -vmoptions:-XX:+UnlockExperimentalVMOptions -w:$dir -noreport -dir:$JAVA_HOME/../../../../test/jdk/ -nativepath:$JAVA_HOME/../test/hotspot/jtreg/native ../hotspot/jtreg/vmTestbase/nsk/jdi/stress/serial/heapwalking001/TestDescription.java |& tee $dir/err) || exit 255
> 	rm -rf $dir
> 
> 
> Unforunately I am not yet Author so I do not yet have a JBS account so I cannot file it to JBS (Java Bug System).

Jan Kratochvil has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  Fix NullPointerException on a parallel run
  
  Error: Unexpected exception occurred! java.lang.NullPointerException
  java.lang.NullPointerException
  	at com.sun.javatest.regtest.config.TestProperties$Cache.getEntryInternal(TestProperties.java:515)
  	at com.sun.javatest.regtest.config.TestProperties$Cache.getEntryInternal(TestProperties.java:515)
  	at com.sun.javatest.regtest.config.TestProperties$Cache.getEntry(TestProperties.java:502)
  	at com.sun.javatest.regtest.config.TestProperties.getEntry(TestProperties.java:170)
  	at com.sun.javatest.regtest.config.TestProperties.getTestNGRoot(TestProperties.java:123)
  	at com.sun.javatest.regtest.config.RegressionTestFinder.scanFile(RegressionTestFinder.java:143)
  	at com.sun.javatest.finder.TagTestFinder.scan(TagTestFinder.java:115)
  	at com.sun.javatest.TestFinder.read(TestFinder.java:433)
  	at com.sun.javatest.TRT_TreeNode.processFile(TRT_TreeNode.java:1259)
  	at com.sun.javatest.TRT_TreeNode.scanIfNeeded(TRT_TreeNode.java:807)
  	at com.sun.javatest.TRT_TreeNode.getTreeNode(TRT_TreeNode.java:616)
  	at com.sun.javatest.TestResultTable.findNode(TestResultTable.java:400)
  	at com.sun.javatest.TestResultTable.lookupNode(TestResultTable.java:533)
  	at com.sun.javatest.TestResultTable.lookupInitURL(TestResultTable.java:571)
  	at com.sun.javatest.TestResultTable.validatePath(TestResultTable.java:1000)
  	at com.sun.javatest.regtest.config.TestManager.validatePath(TestManager.java:299)
  	at com.sun.javatest.regtest.config.TestManager.getTests(TestManager.java:271)
  	at com.sun.javatest.regtest.tool.Tool.createParameters(Tool.java:1659)
  	at com.sun.javatest.regtest.tool.Tool.run(Tool.java:1293)
  	at com.sun.javatest.regtest.tool.Tool.run(Tool.java:1082)
  	at com.sun.javatest.regtest.tool.Tool.main(Tool.java:155)
  	at com.sun.javatest.regtest.Main.main(Main.java:46)
  
  Some debug output showing the problem:
  	scanIfNeeded getRootRelativePath= separator=/ filesToScan[i]=resultdir
  	processFile file=/resultdir isAbsolute=true
  	TestFinder.java read file=/resultdir isAbsolute=true
  	scanFile caller file=/resultdir
  	scanFile File=/resultdir
  	TestProperties.java:dir=/ rootDir=/home/azul/azul/zulu11-git/test/hotspot/jtreg file2=/resultdir file2.getParentFile()=/
  	TestProperties.java:dir=null rootDir=/home/azul/azul/zulu11-git/test/hotspot/jtreg file2=/resultdir file2.getParentFile()=/
  
  This happens with jtreg using -w:resultdir . getRootRelativePath()
  returns empty "" path. Other option would be to return "." but in such
  case it broke some other code.
  
  This problem does not happen during a single run. It happens only when
  jtreg is being run in parallel, in my case:
  	seq 1 100000|xargs -n1 -P64 ./runtest
  	#! /bin/bash
  	dir=result-test$$
  	rm -rf $dir
  	mkdir $dir
  	set -o pipefail
  	(JAVA_HOME=$HOME/azul/zulu11-git/build/linux-x86_64-normal-server-release/images/jdk/; $JAVA_HOME/bin/java -classpath $HOME/azul/jtreg/build/images/jtreg/lib/jtreg.jar:$HOME/azul/jtreg/build/images/jtreg/lib/javatest.jar:$HOME/azul/jtreg/build/images/jtreg/lib/asmtools.jar com.sun.javatest.regtest.Main -testjdk:$JAVA_HOME -othervm -verbose -ignore:quiet -retain:all -a -conc:1 -timeout:10 -vmoptions:-XX:+UnlockExperimentalVMOptions -w:$dir -noreport -dir:$JAVA_HOME/../../../../test/jdk/ -nativepath:$JAVA_HOME/../test/hotspot/jtreg/native ../hotspot/jtreg/vmTestbase/nsk/jdi/stress/serial/heapwalking001/TestDescription.java |& tee $dir/err) || exit 255
  	rm -rf $dir

-------------

Changes:
  - all: https://git.openjdk.org/jtharness/pull/35/files
  - new: https://git.openjdk.org/jtharness/pull/35/files/92f964d3..90532525

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jtharness&pr=35&range=03
 - incr: https://webrevs.openjdk.org/?repo=jtharness&pr=35&range=02-03

  Stats: 3 lines in 1 file changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jtharness/pull/35.diff
  Fetch: git fetch https://git.openjdk.org/jtharness pull/35/head:pull/35

PR: https://git.openjdk.org/jtharness/pull/35

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