I'm trying to get the Jenkins SBT plugin working, which involves referencing the launcher jar, rather than the full SBT install.
This results in "class not found errors", which I believe is because the manifest does not contain the appropriate classpath to allow the launcher to be run like this:
java -Xms512M -Xmx1536M -Xss1M -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=256M -Dsbt.log.noformat=true -jar /path-to/sbt/sbt-launch.jar package
However, this is exactly how the manual installation instructions at http://www.scala-sbt.org/0.13/tutorial/Manual-Installation.html say it should run.
Have I missed something, or should I be filing a bug report (either with the jenkins SBT plugin team or with SBT)?
EDIT: On closer inspection, it's actually failing due to "java.io.EOFException: Unexpected end of ZLIB input stream". I'll investigate this further and update my own question, as I have seen a few other people run into this same problem with SBT.
Try:
java -Xms512M -Xmx1536M -Xss1M -XX:MaxPermSize=256M -Dsbt.log.noformat=true -jar /path-to/sbt/sbt-launch.jar
If you create own file use (bash script):
java -Xms512M -Xmx1536M -Xss1M -XX:MaxPermSize=256M -Dsbt.log.noformat=true -jar /path-to/sbt/sbt-launch.jar "$#"
Note:
-XX:+CMSClassUnloadingEnabled is only valid for CMS Garbage collector. If you use java 7+ you can remove it. For java 8 remove also -XX:MaxPermSize=256M
Related
After modifying the sbtconfig.txt file I would like to know if there is any command in SBT that would allow me to check if this values are really in effect.
After typing "settings -V" I see lots of options but none of them seem helpful:
Try sbt -v (lowercase v)
I got this on linux:
$ sbt -v master
[process_args] java_version = '1.8.0_112'
# Executing command line:
java
-Dfile.encoding=UTF8
-Xms1G
-Xmx6G
-XX:MaxPermSize=512M
-XX:ReservedCodeCacheSize=250M
-XX:+TieredCompilation
-XX:-UseGCOverheadLimit
-XX:+CMSClassUnloadingEnabled
-XX:+UseConcMarkSweepGC
-Dsbt.override.build.repos=true
-jar
/usr/share/sbt/bin/sbt-launch.jar
I am working on a Scala project that has been in existence for a few years but is new to me. My task is to upgrade it from Scala 2.9.3 to 2.11.7, along with its dependencies. I have gotten past the errors and warnings, but I cannot get the project to compile successfully in SBT. I always get a StackOverflowError in pretty much the same place. The stacktrace looks like this, but details vary with the Xss setting (currently 4M, but have tried as high as 24M):
java.lang.StackOverflowError
at scala.tools.nsc.transform.Erasure$Eraser.typed1(Erasure.scala:698)
at scala.tools.nsc.typechecker.Typers$Typer.runTyper$1(Typers.scala:5395)
at scala.tools.nsc.typechecker.Typers$Typer.scala$tools$nsc$typechecker$Typers$Typer$$typedInternal(Typers.scala:5422)
at scala.tools.nsc.typechecker.Typers$Typer.body$2(Typers.scala:5369)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5373)
at scala.tools.nsc.typechecker.Typers$Typer.typedQualifier(Typers.scala:5471)
at scala.tools.nsc.typechecker.Typers$Typer.typedQualifier(Typers.scala:5479)
at scala.tools.nsc.transform.Erasure$Eraser.adaptMember(Erasure.scala:644)
at scala.tools.nsc.transform.Erasure$Eraser.typed1(Erasure.scala:698)
at scala.tools.nsc.typechecker.Typers$Typer.runTyper$1(Typers.scala:5395)
at scala.tools.nsc.typechecker.Typers$Typer.scala$tools$nsc$typechecker$Typers$Typer$$typedInternal(Typers.scala:5422)
SBT_OPTS looks like this:
-Xmx2G -Xss4M -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled
I can 'make' the project successfully in Intellij, and others can pull my changes from GitHub and compile the project in sbt, so the issue seems to be local to my machine (a recent quad-core Macbook Pro with 16GB RAM). Other Scala/sbt projects compile successfully for me on this machine.
Here are other relevant details:
Scala version: 2.11.7
Java version: java version "1.8.0_66" (build 1.8.0_66-b17)
sbt version: 0.13.7 (have also tried 0.13.9)
I have completely rebuilt the ivy2 cache and cleared the lib_managed directory. The version of the scala-compiler.jar is the same as is used on at least one machine that can 'sbt compile' the code successfully. I did a clean reinstall of sbt (via brew remove sbt, manual removal of ~/.sbt directory, then brew install sbt).
I have not tried to isolate the line of source code being compiled when the error occurs. I have assumed it would be more productive to look for a configuration issue or dependency conflict somewhere.
Any suggestions for further troubleshooting will be appreciated.
[Added...] It may be helpful to add that, as an experiment, I downloaded the Scala language source code from https://github.com/scala/scala and got the following very similar error trying to sbt compile it:
java.lang.StackOverflowError
at scala.tools.nsc.transform.ExplicitOuter$OuterPathTransformer.outerValue(ExplicitOuter.scala:229)
at scala.tools.nsc.transform.ExplicitOuter$ExplicitOuterTransformer.transform(ExplicitOuter.scala:441)
at scala.tools.nsc.transform.ExplicitOuter$ExplicitOuterTransformer.transform(ExplicitOuter.scala:352)
at scala.reflect.internal.Trees$class.itransform(Trees.scala:1345)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555)
at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.transform(TypingTransformers.scala:44)
at scala.tools.nsc.transform.ExplicitOuter$OuterPathTransformer.scala$reflect$internal$Trees$UnderConstructionTransformer$$super$transform(ExplicitOuter.scala:219)
at scala.reflect.internal.Trees$UnderConstructionTransformer$class.transform(Trees.scala:1693)
at scala.tools.nsc.transform.ExplicitOuter$OuterPathTransformer.transform(ExplicitOuter.scala:291)
at scala.tools.nsc.transform.ExplicitOuter$ExplicitOuterTransformer.transform(ExplicitOuter.scala:459)
at scala.tools.nsc.transform.ExplicitOuter$ExplicitOuterTransformer.transform(ExplicitOuter.scala:352)
at scala.reflect.internal.Trees$class.itransform(Trees.scala:1347)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555)
Here is something interesting. From this post I found out about launching sbt with a -d flag for debugging info. Got the following output:
Kevins-MacBook-Pro:scala kdoherty$ sbt -d
[process_args] java_version = '1.8.0_66'
# Executing command line:
java
-Xmx2G
-Xss4M
-XX:+UseConcMarkSweepGC
-XX:+CMSClassUnloadingEnabled
-Xmx384m
-Xss512k
-XX:+UseCompressedOops
-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5005
-jar
/usr/local/Cellar/sbt/0.13.9/libexec/sbt-launch.jar
So somewhere my SBT_OPTS settings are being overridden (by defaults, I guess). Now I need to find where those defaults are coming from.
I figured it out. Once I knew that the -d flag would tell me what settings SBT was actually using, I saw that the values in my SBT_OPTS environment variable were being clobbered by other, lower settings. Where were those coming from? From my JAVA_OPTS env variable! I should have noticed them sooner, but now I know I can keep those Java options as they are and override them by adding the SBT-specific settings to my /usr/local/etc/sbtopts file, using the somewhat awkward format of
-J-Xmx2G
-J-Xss2M
Using the values shown I was able to run sbt compile successfully on my project.
I hope someone finds this useful.
Add to the bottom of /usr/local/etc/sbtopts
-J-Xmx4G
-J-Xss4M
All set.
I just added -Xss in my Intellij sbt properties and the issue is resolved.
Intellij SBT properties
Relevant parts from the output of sbt -h:
# jvm options and output control
JAVA_OPTS environment variable, if unset uses ""
.jvmopts if this file exists in the current directory, its contents
are appended to JAVA_OPTS
SBT_OPTS environment variable, if unset uses ""
.sbtopts if this file exists in the current directory, its contents
are prepended to the runner args
Thus, in my case I solved the problem by creating a file .sbtopts with content
-J-Xmx4G
-J-Xss4M
in the project directory.
Note: Running sbt -d shows what settings have been used, for instance:
$ sbt -d
[addSbt] arg = '-debug'
[process_args] java_version = '8'
# Executing command line:
java
-Xms1024m
-XX:ReservedCodeCacheSize=128m
-XX:MaxMetaspaceSize=256m
-Xmx2G
-Xss2M
-jar
/path/to/sbt-launch.jar
-debug
I was unable to get this to work via the provided answers. build.sbt settings and the sbtopts file both failed to solve this error for me. What I had to do was run sbt with the -mem flag, for example:
sbt -mem 2048 compile
and now my projects built. If using IntelliJ you can also go to
Preferences > Build, Execution, Deployment > Build Tools > sbt
and set Maximum heap size, MB to whatever target you need.
I discovered the SBT_OPT setting in the bin/sbt file of my sbt install was affecting the memory values set in my projects build.sbt
updating the existing -Xss value in this file from 1M to 8M raised the memory size of the Scalac stack to a point I stopped getting StackOverflow exceptions in the sbt-invoked compiler. This seemed odd because the sbt documented approach to setting stack size in the compiler is to do this is with the -J-Xss setting.
Sbt doesn't seem to actually enable you to set the compiler's stack memory. While a build.sbt accepts the following configuration as a valid setting, it doesn't seem to apply the value in the compiler:
scalacOptions in ThisBuild ++= Seq(-J-Xss8M)
I suspect that is a bug or non-implemented functionality
I too run into this problem recently and I discovered a working solution for it with sbt 1.3.13.
create a .sbtopts file under project root
add -J-Xss100M (or any thread stack size you think suitable) to the .sbtopts file
There are multiple Correct Answers already. But what worked for me is below,
// Created and Added a File: .jvmopts in the Project Root Folder with below Parameters.
-Xms3022m
-Xmx4048m
-Xss124m
-XX:MaxPermSize=4048m
-XX:MaxMetaspaceSize=512m
-XX:+CMSClassUnloadingEnabled
-XX:ReservedCodeCacheSize=128m
I tried to work with easy example of scala language.
I installed sbt successfully. When run sbt -h I see help message from sbt:
Usage: sbt [options]
-h | -help print this message
-v | -verbose this runner is chattier
-d | -debug set sbt log level to debug
-no-colors disable ANSI color codes
-sbt-create start sbt even if current directory contains no sbt project
-sbt-dir <path> path to global settings/plugins directory (default: ~/.sbt)
-sbt-boot <path> path to shared boot directory (default: ~/.sbt/boot in 0.11 series)
-ivy <path> path to local Ivy repository (default: ~/.ivy2)
-mem <integer> set memory options (default: 1536, which is -Xms1536m -Xmx1536m -XX:MaxPermSize=384m -XX:ReservedCodeCacheSize=192m) ....
but when I tried to run in the directory with scala assignments (it's Coursera course) I caught error:
nazar_art#nazar-desctop:~/scala/example$ sbt
Detected sbt version 0.12.1
Starting sbt: invoke with -help for other options
Error occurred during initialization of VM
Could not reserve enough space for object heap
but it should open the sbt command prompt. Smt like this:
shell$ cd /path/to/progfun-project-directory # This is the shell of the operating system
shell$ sbt
> _ # This is the sbt shell
UPDATE:
After I add this following line
java -Xms64M -Xmx256M -Xss1M -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=64M -jardirname $0/sbt-launch.jar "$#"
at /usr/bin I see next output:
nazar_art#nazar-desctop:/usr/bin$ sbt
bash: /usr/bin/sbt: Permission denied
nazar_art#nazar-desctop:/usr/bin$ sudo sbt
sudo: sbt: command not found
- Why this happen?
- How to solve this issue?
First of all, The example folder name (and the folder name that you have installed sbt) cannot include "!". this probably applies to other special characters as well. Even, I recommend to install SBT in a folder that has no space on its path (and the same thing for examples folder).
For example, if you have installed SBT (or examples folder) on a path like:
/Users/dashti/My Programs/sbt-0.12.1
You can re-install it a path like:
/Users/dashti/MyPrograms/sbt-0.12.1
By applying this naming change, if the error is gone, please ignore the rest of this post.
Otherwise, to fix the mentioned error, first find sbt executable script, then edit it and correct any problem in it:
If you are using a UNIX-based operating system, please follow these steps:
1- Find SBT: Open a terminal and type this command:
which sbt
and you will receive a path like:
/Users/dashti/Documents/scala-2.10.0/bin/sbt
and in this file, there is a command for executing a java program, like:
java -Xms512M -Xmx1024M -Xss1M -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=128M -jar `dirname $0`/sbt-launch.jar "$#"
2- Edit sbt script: by entering this command in terminal:
vim /Users/dashti/Documents/scala-2.10.0/bin/sbt
you will be able to edit this file and maybe you should change the memory usage arguments to a lower specification ( You should think about whether you have enough RAM to be running the sbt). For example, this one will be a better choice:
java -Xms64M -Xmx256M -Xss1M -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=64M -jar `dirname $0`/sbt-launch.jar "$#"
SBT needs more memory allocated to the JVM.
This can be done in build.sbt:
javaOptions ++= Seq(
"-Xms64m",
"-Xmx256M",
"-XX:+CMSClassUnloadingEnabled",
"-XX:MaxPermSize=64M"
);
Creating an sbt file(no extentions) and running ./sbt is better, but with the code below(#MohammadDashti's suggestion), sbt-launch.jar needs to be in the project folder.
java -Xms512M -Xmx1024M -Xss1M -XX:+CMSClassUnloadingEnabled \
-XX:MaxPermSize=128M -jar `dirname $0`/sbt-launch.jar "$#"
Later you could add javaagent:/path/to/jrebel -Drebel.remoting_plugin=true and re-deploy changes on save with a free JRebel for Scala license.
I customized my eclipse.ini as suggested in the post What are the best JVM settings for Eclipse? . When I run eclipse with this eclipse.ini. It works well on my machine . I suggested these file to my colleagues . On of them has got this exception .
UnRecognized vm option -XX:ConcGCThreads .
Exception occured jdk version - 1.6.0_16 .
I am using jdk 1.6.0_24 . How can i know what are all the jvm options supported from jdk 1.6.0_0? .
Eclipse.ini
-showsplash
-vmargs
-Xincgc
-Xss500k
-Dosgi.requiredJavaVersion=1.6
-Xms512m
-Xmx1024m
-XX:NewSize=8m
-XX:PermSize=128m
-XX:MaxPermSize=150m
-XX:MaxPermHeapExpansion=10m
-XX:+UseConcMarkSweepGC
-XX:CMSInitiatingOccupancyFraction=70
-XX:+UseCMSInitiatingOccupancyOnly
-XX:+UseParNewGC
-XX:+CMSConcurrentMTEnabled
-XX:ConcGCThreads=2
-XX:ParallelGCThreads=2
-XX:+CMSIncrementalPacing
-XX:CMSIncrementalDutyCycleMin=0
-XX:CMSIncrementalDutyCycle=5
-XX:GCTimeRatio=49
-XX:MaxGCPauseMillis=20
-XX:GCPauseIntervalMillis=1000
-XX:+UseCMSCompactAtFullCollection
-XX:+CMSClassUnloadingEnabled
-XX:+DoEscapeAnalysis
-XX:+UseCompressedOops
-XX:+AggressiveOpts
-XX:+ExplicitGCInvokesConcurrentAndUnloadsClasses
-Xverify:none
There is not much you can do except reading the documentation of the JVM you are using.
I assume you are using Oracle's JDK implementation. The documentation for garbage collection (http://www.oracle.com/technetwork/java/javase/gc-tuning-6-140523.html) doesn't mention the -XX:ConcGCThread option. To my understanding, the option -XX:ParallelGCThreads=2 is only used for the parallel GC.
If you dont't experience excessive pauses due to garbage collection I wouldn't bother changing the vm settings for eclipse. The only settings I ever changed for eclipse is MaxPermSize and the heap size.
It depends on the version of JDK you are using and also the JVM and the falgs it supports.
Similar discussion I found here. Hope this helps. :
http://www.eclipse.org/forums/index.php/t/87365/
I am using m2eclipse.
I configured jetty-maven plugin in pom.xml properly.
when I try to execute through CMD its working fine. No error
Whereas when I try to execute through eclipse,
$ java.lang.NoClassDefFoundError: MAVEN_OPTS=-Xdebug -Xnoagent -Djava/compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,suspended=y,address=8000
Exception in thread "main" $
I am missing some Jetty - Eclipse configuration. Can someone suggest on this.
D0 you find any error in this,
MAVEN_OPTS="-XX:MaxPermSize=256M -Xmx512M -Xdebug
-Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=y"
I found it.... the mistake is in VM arguments.. If ur VM arguments is misspelled or something, it throws filenotfound error.
MAVEN_OPTS="-XX:MaxPermSize=256M -Xmx512M -Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=y"
Actual:
-XX:MaxPermSize=256M -Xmx512M -Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=y
No MAVEN_OPTS no quotation in VM arguments while u enter in eclipse...