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https://issues.apache.org/jira/browse/LUCENE-9080?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17026964#comment-17026964
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Erick Erickson commented on LUCENE-9080:
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This is painful and I give up trying to get a different version of python to
work with Ant on my mac. It's easy enough to install python3, and use it to
manually run the script. But getting my mac to use python3 when ant is running
is fairly hopeless. Or at least too time consuming to bother with, I'll just
roll back the relevant files if I ever have to run this under Ant again.
Not quite sure what we'll do about Gradle. I'll check that out soon.
> Upgrade ICU4j to 62.2 and make regenerate work
> ----------------------------------------------
>
> Key: LUCENE-9080
> URL: https://issues.apache.org/jira/browse/LUCENE-9080
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Erick Erickson
> Assignee: Dawid Weiss
> Priority: Major
> Fix For: master (9.0)
>
> Attachments: after_regen.patch, before_regen.patch, status.res
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> The root cause is that RamUsageEstimator.NUM_BYTES_INT has been removed and
> the python scripts still reference it in the generated scripts. That part's
> easy to fix.
> Last time I looked, though, the regenerate produces some differences in the
> generated files that should be looked at to insure they're benign.
> Not really sure whether this should be a Lucene or Solr JIRA. Putting it in
> Lucene since one of the failed files is:
> lucene/core/src/java/org/apache/lucene/util/packed/Packed8ThreeBlocks.java
> I do know that one of the Solr jflex-produced file has an unexplained
> difference so it may bleed over.
> "ant regenerate" needs about 24G on my machine FWIW.
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