When to perform Re-Indexing in AEM

Statement : Only cases for Re-indexing

Solution : 

• New or changed index definition
• Bug: Counter index out of sync 
• Bug: Lucene binary is missing or corrupt 
• Bug: Very large transaction + many child nodes 
• Bug: Partial migration using sidegrade


Reference : http://jackrabbit.apache.org/oak/docs/query/indexing.html#reindexing