question: public Integer call ( ) throws Exception { int nverified = 0 ; try { for ( int i = 0 ; i < nreads ; i ++ ) { if ( read ( ) ) { nverified ++ ; } } } catch ( Throwable t ) { log . warn ( t . getMessage ( ) , t ) ; throw new RuntimeException ( t ) ; } return nverified ; }
target:  Executes random reads and validates against ground truth.