question: public synchronized boolean startReindexer ( String name , boolean force ) throws ReindexerAlreadyRunningException { OnlineReindexer < ? , ? , ? > reindexer = reindexers . get ( name ) ; validateReindexerNotRunning ( reindexer ) ; if ( force || ! isCurrentIndexVersionLatest ( name , reindexer ) ) { reindexer . start ( ) ; return true ; } return false ; }
target:  Start the online reindexer if the current index is not already the latest.