Incorrect classname is used for journal article subscriptions after upgrading to 7.1

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, 7.1.X, 7.2.X, Master
• Fix Version/s: 7.0.0 DXP FP86, 7.0.X, 7.1.10 DXP FP14, 7.1.X, 7.2.10 DXP FP1, 7.2.X, 7.2.1 CE GA2, Master
• Component/s: WCM, WCM > Upgrade
• Labels:
  • ee-ts
  • liferay-fixpack-de-86-7010
  • liferay-fixpack-dxp-1-7210
  • liferay-fixpack-dxp-14-7110
  • pt-upgrade-review
• Branch Version/s:
  7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/76294

Reproduction steps:

1. Create a web content
2. Add a Web Content Display portlet to a page
3. Display the content in the portlet and configure it to enable comments
4. Click on the "Subscribe to comments" button
5. Upgrade to Liferay 7.1

Experienced behavior: The classNameId is updated to JournalFolder's classNameId

Expected behavior: The classNameId should be JournalArticle's classNameId

Reproduced on master 912d7fabf61a8603d8ad67c716400ddda33b3cfb

Please see the doUpgrade() and the addClassName methods in the UpgradeSubscription class

@Override
	protected void doUpgrade() throws Exception {
		deleteOrphanedSubscriptions();

		updateSubscriptionClassNames(
			Folder.class.getName(), DLFolder.class.getName());
		updateSubscriptionClassNames(
			"com.liferay.portlet.journal.model.JournalArticle",
			"com.liferay.portlet.journal.model.JournalFolder");

		updateSubscriptionGroupIds();
	}

protected void addClassName(long classNameId, String className)
		throws Exception {

		try (PreparedStatement ps = connection.prepareStatement(
				"insert into ClassName_ (mvccVersion, classNameId, value) " +
					"values (?, ?, ?)")) {

			ps.setLong(1, 0);
			ps.setLong(2, classNameId);
			ps.setString(3, className);

			ps.executeUpdate();
		}
	}