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Posted to dev@lucene.apache.org by "Uwe Schindler (JIRA)" <ji...@apache.org> on 2018/03/26 22:11:00 UTC
[jira] [Comment Edited] (SOLR-12141) Solr does not start on Windows
with Java 10
[ https://issues.apache.org/jira/browse/SOLR-12141?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16414627#comment-16414627 ]
Uwe Schindler edited comment on SOLR-12141 at 3/26/18 10:10 PM:
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bq. There is a nother problem (this also affects Linux). Java 10 no longer has -XX:+UseParNewGC, it was removed
This flag was already obsolete in Java 8, as ConcMarkSweepGC automatically enables it (see http://openjdk.java.net/jeps/173). So I will simply remove it in both Windows and Linux.
was (Author: thetaphi):
bq. There is a nother problem (this also affects Linux). Java 10 no longer has -XX:+UseParNewGC, it was removed
This flag was already obsolete in Java 8, as ConcMarkSweepGC automatically enables ist. So I will simply remove it in both Windows and Linux.
> Solr does not start on Windows with Java 10
> -------------------------------------------
>
> Key: SOLR-12141
> URL: https://issues.apache.org/jira/browse/SOLR-12141
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: scripts and tools
> Affects Versions: 7.0, 7.1, 7.2, 7.3
> Environment: Windows 10 with Java 10+
> Reporter: Uwe Schindler
> Priority: Blocker
> Fix For: 7.3
>
> Attachments: SOLR-12141.patch, SOLR-12141.patch, SOLR-12141.patch
>
>
> If you try to start Solr on Windows with Java 10, it fails with the following message:
> {noformat}
> C:\Users\Uwe Schindler\Desktop\solr-7.3.0\bin>solr start -e techproducts
> ERROR: Java 1.8 or later is required to run Solr. Current Java version is: 10
> {noformat}
> Java 8 and Java 9 works. I did not try Linux, but the version parsing on Windows is so braindead (i tried to fix it for Java 9 already). Windows CMD shell does not know any numerical comparisons, so it fails as "10" is alphabetically smaller "9".
> I hope this is better on Linux.
> Why do we have the version check at all? Wouldn't it be better to simply wait for a useful message by the Java VM on startup because of wrong class file format? This is too simply to break, especially as the output of "java -version" is not standardized (and changes with Java 10 to also have a date code,...). It also may contain "openjdk" instead of "java".
> So please please, let's get rid of the version check!
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