question: public Long call ( ) throws Exception { for ( int i = 0 ; i < nops ; i ++ ) { Record record = writer . getRandomGroundTruthRecord ( ) ; ByteBuffer buf ; if ( r . nextInt ( 100 ) > 30 ) { buf = store . read ( record . addr ) ; } else { buf = ByteBuffer . allocate ( store . getByteCount ( record . addr ) ) ; buf = store . read ( record . addr ) ; } assertEquals ( record . data , buf ) ; } return 0L ; }
target:  Executes random reads and validates against ground truth.