Early Access build fails to new JAXP limit of `100000`

[sormuras]

With https://bugs.openjdk.org/browse/JDK-8343004 () the jdk.xml.maxGeneralEntitySizeLimit was set from unlimited to 100000 in JDK 24.

openjdk/jdk@28c8729#diff-031529e6458daa18972454e3e220c776db020cc0657ce881e649f99148d2f4ecR166-R167

# Limits the maximum size of any general entities. The default value is 100000.
jdk.xml.maxGeneralEntitySizeLimit=100000

That leads to an error in the CI run using JDK 25-ea:

Error: [ERROR] Internal error: java.lang.RuntimeException: Failed to load p2 repository with ID 'mars' from location https://download.eclipse.org/releases/mars: Unable to read repository at https://download.eclipse.org/releases/mars. Unable to read repository at file:/home/runner/.m2/repository/.cache/tycho/https/download.eclipse.org/releases/mars/201506241002/content.xml.xz. JAXP00010003: The length of entity "[xml]" is "100,001" that exceeds the "100,000" limit set by "jdk.xml.maxGeneralEntitySizeLimit". -> [Help 1]
[...]
Caused by: org.xml.sax.SAXParseException: JAXP00010003: The length of entity "[xml]" is "100,001" that exceeds the "100,000" limit set by "jdk.xml.maxGeneralEntitySizeLimit".
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse (AbstractSAXParser.java:1252)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse (SAXParserImpl.java:643)
    at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryIO$Parser.parse (MetadataRepositoryIO.java:206)
[...]

For example in: https://github.com/google/google-java-format/actions/runs/12289067847/job/34293938676

[cushon]

I filed eclipse-tycho/tycho#4526 for this against the affected plugin, I hadn't got as far as trying to work around it. Possible setting the system property in the maven JVM flags would work. Another option would be to temporarily disable the Eclipse plugin in the build.

[cushon]

It looks like changing the limits in .mvn/jvm.config works:

-Djdk.xml.maxGeneralEntitySizeLimit=0
-Djdk.xml.totalEntitySizeLimit=0

[phit]

edit: just realized this repo is mostly unrelated to the issue in app scripts besides being under the google org, oh well maybe someone that can fix this will see it here

---

This is also breaking Google's own Apps Scripts, when using XmlService

  var feedUrl = "https://about.gitlab.com/all-releases.xml";
  var xml = UrlFetchApp.fetch(feedUrl).getContentText();
  var document = XmlService.parse(xml);

throws

JAXP00010003: The length of entity "[xml]" is "100,001" that exceeds the "100,000" limit set by "jaxp.properties".

first time we got this in our automation was 2/3/25 2:19:08 AM EST when it had been working untouched for years..