Search does not provide accurate results and highlights for Japanese content neither on Elasticsearch nor on Solr

• Type: Bug
• Status: Closed
• Resolution: Inactive
• Affects Version/s: 7.0.X, 7.1.X
• Fix Version/s: None
• Component/s: Search Infrastructure
• Labels:
  • 7.2-won't
  • 7.3-known-issues
  • QA-FP
  • QA-V
  • liferay-ga4-ce-733
  • liferay-ga5-ce-734
  • liferay-ga6-ce-735
  • liferay-ga7-ce-736
  • liferay-ga8-ce-737
  • reviewed-by-pm
• Epic/Theme:
  • Search_Tech_Debt
• Story Points: 2
• Fix Priority: 4

Steps to Reproduce

1. Start liferay.
2. Use A洗bしC爸dばE她fたG as title/Description/Summary in WC and DM for test.
3. Use search engine as title/Description/Summary in WC and DM for test.

Searching & Results
a.localization-related.

• Search dばE她fたG* or *dばE她fたG only have result in WC.(SOLR)
• Search * return all WC and DM and user.(ES/SOLR)
• Search "A洗bしC爸", "dばE她fたG" only have result in WC.(SOLR)
• Search +, - only have result in DM.(ES and SOLR)

b.

• Search *rch,*sea get result in DM for solr, no result for ES.
• Search "sea" or "eng" or "rch" or "ine" only get result with DM's title.(ES/SOLR)
• Document title is apple, search for "app" with quotes,return the DM's title. (ES/SOLR)
• Search app+, app- no result.Search apple+, apple- get all result in WC and DM.(ES/SOLR)