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https://issues.apache.org/jira/browse/SOLR-18119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18124921#comment-18124921
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Jan Høydahl commented on SOLR-18119:
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The GraalPy PR is here [https://github.com/apache/solr/pull/5034]
Note in particular the {{-Psolr.python.mode=system|graalpy|auto}} flag that
gives you predictable engine if you want.
For most developers, it will be as today, python3 will exist locally, but for
CI and the drive-by contributor, GraalPy will be chosen.
If anyone fancy developing the kind of tooling we're talking about here in pure
Java, then feel free. It'd be a nightmare and many more lines of code than
their py equivalents. I agree that core tools that will run on every or most
builds should not require other than the JVM. So for these two scripts, perhaps
GraalPy turns out to be a stop-gap solution until someone are comfortable
porting them. Java *IS* becoming a more pleasant language with records, text
blocks, soon native JSON support, support for unning a .java file without
compiling etc. Approaching Kotlin...
> Changes.html generation is quietly skipped if python3 not found, can cause
> downstream tasks to fail confusingly
> ----------------------------------------------------------------------------------------------------------------
>
> Key: SOLR-18119
> URL: https://issues.apache.org/jira/browse/SOLR-18119
> Project: Solr
> Issue Type: Bug
> Reporter: Chris M. Hostetter
> Assignee: Jan Høydahl
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> ChangesToHtmlTask will log a warning if python3 doesn't exist – but it does
> not fail.
> downstream tasks that (implicitly) depend on the existence of Changes.html
> will subsequently fail...
>
> {noformat}
> :solr:documentation:checkBrokenLinks
> :solr:solr-ref-guide:checkSiteLinks{noformat}
>
> This can be very confusing on jenkins boxes – such as our Windows jenkins
> build, which does not have python3 – when people don't know/realize that
> {{:solr:documentation:changesToHtml}} quietly did nothing.
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