[jira] [Closed] (MNG-7398) maven build with long statement is prohibitively slow

["Michael Osipov (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MNG-7398?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Osipov closed MNG-7398.
-------------------------------
    Resolution: Invalid

This is a not a bug in Maven, but in Java 8. If you run MCOMPILER in fork mode you see that {{javac}} blocks your machine. In fact, it consumes up to 800% here. Java 11 and 16 compile instantly. Report the Java 8 bug to Oracle.
Blocks:
{noformat}
Apache Maven 3.8.5-SNAPSHOT (a472e6f774a9e16f778a2cbff621d5aa8475c3f0)
Maven home: /tmp/apache-maven-3.8.5-SNAPSHOT
Java version: 1.8.0_312, vendor: OpenJDK BSD Porting Team, runtime: /usr/local/openjdk8/jre
Default locale: de_DE, platform encoding: UTF-8
OS name: "freebsd", version: "12.3-stable", arch: "amd64", family: "unix"
{noformat}

Works:
{noformat}
Apache Maven 3.8.5-SNAPSHOT (a472e6f774a9e16f778a2cbff621d5aa8475c3f0)
Maven home: /tmp/apache-maven-3.8.5-SNAPSHOT
Java version: 11.0.13, vendor: OpenJDK BSD Porting Team, runtime: /usr/local/openjdk11
Default locale: de_DE, platform encoding: UTF-8
OS name: "freebsd", version: "12.3-stable", arch: "amd64", family: "unix"
Apache Maven 3.8.5-SNAPSHOT (a472e6f774a9e16f778a2cbff621d5aa8475c3f0)
Maven home: /tmp/apache-maven-3.8.5-SNAPSHOT
Java version: 16.0.2, vendor: OpenJDK BSD Porting Team, runtime: /usr/local/openjdk16
Default locale: de_DE, platform encoding: UTF-8
OS name: "freebsd", version: "12.3-stable", arch: "amd64", family: "unix"
{noformat}

> maven build with long statement is prohibitively slow
> -----------------------------------------------------
>
>                 Key: MNG-7398
>                 URL: https://issues.apache.org/jira/browse/MNG-7398
>             Project: Maven
>          Issue Type: Bug
>          Components: build/consumer
>    Affects Versions: 3.5.0, 3.8.1
>         Environment: jdk8
>            Reporter: liuxun
>            Priority: Critical
>              Labels: easyfix, performance
>         Attachments: build-with-long-statement-is-prohibitively-slow.zip
>
>
> h2. *+Question+*
> maven build with long statement is prohibitively slow.
> h2. +*Step*+
> 1: use the attachment zip file to repeat it, you can run it use 
> {code:java}
> mvn clean package -X{code}
> it keeped always in processing, no errors, no timeout, no more info, but in processing status.
> 2: please focus on file:
> {code:java}
> com.chwod.robot.action.general.service.relation.RelationMappingService {code}
> there is a static block, it's containts a long statement. if remove it, then rebuild as step 1, it build complete quickly;
> so, until now, it seems that the maven build isn't support long statement.
> but, the interesting is:
> 3: keeped the static block containts a long statement in that file, if remove parent block from the pom.xml,, it build complete quickly.
> so, now, I can't be sure who's question this is. maven or spring? why not maven like spring? if not, I think maven can be fix it.
>  
> BTW, I also submit a issue to spring repository, and hope： The two are reconciled



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