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https://issues.apache.org/jira/browse/KAFKA-20024?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18048381#comment-18048381
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fujian edited comment on KAFKA-20024 at 12/30/25 10:34 AM:
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[~abyssfishrover] maybe nobody willl handle it due to few person using
windows. you can refer to [https://github.com/apache/kafka/pull/20896] which is
more critical issue.
was (Author: fujian1115):
[~abyssfishrover] maybe nobody willl handle it. you can refer to
[https://github.com/apache/kafka/pull/20896] which is more critical issue.
> wmic os get osarchitecture is unreliable for detecting OS bitness in bat
> scripts
> --------------------------------------------------------------------------------
>
> Key: KAFKA-20024
> URL: https://issues.apache.org/jira/browse/KAFKA-20024
> Project: Kafka
> Issue Type: Bug
> Reporter: AbyssFishRover
> Assignee: AbyssFishRover
> Priority: Major
> Attachments: image-2025-12-30-16-27-52-195.png,
> image-2025-12-30-16-28-25-539.png, image-2025-12-30-16-28-42-798.png,
> image-2025-12-30-16-29-03-343.png, image-2025-12-30-16-29-19-289.png,
> image-2025-12-30-16-29-36-542.png
>
>
> Hello，During my usage of Kafka, I identified an issue. In the
> {{kafka-server-start.bat}} script, there is a logic that sets different
> startup parameters based on the bitness (32-bit/64-bit) of the operating
> system. The relevant code is as follows:
> {code:java}
> IF ["%KAFKA_HEAP_OPTS%"] EQU [""] (
> rem detect OS architecture
> wmic os get osarchitecture | find /i "32-bit" >nul 2>&1
> IF NOT ERRORLEVEL 1 (
> rem 32-bit OS
> set KAFKA_HEAP_OPTS=-Xmx512M -Xms512M
> ) ELSE (
> rem 64-bit OS
> set KAFKA_HEAP_OPTS=-Xmx1G -Xms1G
> )
> ) {code}
> It first queries wmic os get osarchitecture, then determines whether the
> operating system is 32-bit or 64-bit by checking if the result contains the
> string "32-bit". However, my actual tests show that this method is not
> reliable—the returned results vary across Windows systems with different
> languages and regional settings, as shown below:
>
> {*}English Windows{*}:
> !image-2025-12-30-16-27-52-195.png!
> {*}Chinese Windows{*}:
> !image-2025-12-30-16-28-25-539.png!
> {*}French Windows{*}:
> !image-2025-12-30-16-28-42-798.png!
> {*}German Windows{*}:
> !image-2025-12-30-16-29-03-343.png!
> {*}Japanese Windows{*}:
> *!image-2025-12-30-16-29-19-289.png!*
> {*}Older Windows XP systems{*}:
> !image-2025-12-30-16-29-36-542.png!
> Kafka has users across the globe, and the current approach lacks universality.
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