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https://issues.apache.org/jira/browse/CASSANDRA-15258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16938879#comment-16938879
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A Thomas B commented on CASSANDRA-15258:
----------------------------------------

I think the issue is that the condition on cassandra-env.ps1:403 is miswritten.

 

Just running
{code:java}
$env:JVM_VERSION=11
$env:JVM_VERSION.CompareTo("1.8.0"){code}
returns "1"

 

However, even when commenting out the entire condition:

 
{code:java}
if ($env:JVM_VERSION.CompareTo("1.8.0") -eq -1 -or 
[convert]::ToInt32($env:JVM_PATCH_VERSION) -lt 151)
{
    echo "Cassandra 4.0 requires either Java 8 (update 151 or newer) or Java 11 
(or newer). Java $env:JVM_VERSION is not supported."
    exit
}{code}
 

but then it fails with

 
{code:java}
[0.014s][error  ][logging] Error opening log file 
'C:\Users\bugorskia\cassandra/logs/gc.log': No such file or directory
[0.015s][error  ][logging] Initialization of output 
'file=C:\Users\bugorskia\cassandra/logs/gc.log' using options '(null)' failed.
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit. {code}
 

so I created a folder called "logs" and then when I run it I get a Java 
exception:


{code:java}
Caused by: java.lang.IllegalAccessException: access to public member failed: 
jdk.internal.ref.Cleaner.clean[Ljava.lang.Object;@4097cac/invokeVirtual, from 
org.apache.cassandra.io.util.FileUtils (unnamed module @78a773fd) {code}
 

which is a reoccuring theme of Cassandra failing due to the changes from Java 9 
modules.

> Cassandra JDK11 Windows not working
> -----------------------------------
>
>                 Key: CASSANDRA-15258
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15258
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Build, Local/Startup and Shutdown
>            Reporter: RamyaK
>            Priority: Urgent
>              Labels: windows
>
> I'm trying to setup Cassandra 4.0 trunk with OpenJDK11, but getting below 
> error on start up.
>  
> +     $content = Get-Content "$env:CASSANDRA_CONF\jvm.options"
> +                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>     + CategoryInfo          : ObjectNotFound: 
> (D:\Stuff\save\C...onf\jvm.options:String) [Get-Content], 
> ItemNotFoundException
>     + FullyQualifiedErrorId : 
> PathNotFound,Microsoft.PowerShell.Commands.GetContentCommand
> Also JVM_VERSION is 11, still its showing as
> Cassandra 4.0 requires either Java 8 (update 151 or newer) or Java 11 (or 
> newer). Java 11 is not supported.
>  
>   Please suggest.
>  



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