Considerations on Resource Usage in Exceptions and Failures in Workflows

(1)

!" # $ % & " ' '( !) * $ % & '( ) ) ++ " % & " ' '( ! " # # $ # % & # ' ' ( % ) * + *, - % # # . % ) * + * # %- ) % # # ' ' ( % ) * + *, # " , + / # 0 - #1 # ( 1 * + * ,. # # / + * 0 1 . * # $ $ $ # - # * * + * # 0 * +- . # # -( # 0 ( 1. + * + * * 0 0 ( $ . . # # * + * # # .1

(2)

# 0. + 1* 0 # - # 0 ( - . 2 1- * + * # 0 # - * + 0 * + 0 " , 0 " 31 1" 0 . ( 0 . # 0 0 0 # ( # * + *-0 * 0 0 # $ . 1 0 # + * + * 0 # / + * 0 1 # + $ . 1 * + * 0 1 # # # ( / # + . $ . 1 ## # # 4 0 ( # # 0 * + * ( $ . # ( # # 1 . # * 0 5 $ 1 * # ( # 0 ( * + *- 0 * -$ $ . $ # # 1" #- * # #6 * + * . #1 1 # 0 #- * (- .1 + 0 $ $ # - * 0 $ . 1# 0 ( # + 6 * * + * # # 0 $ # .1 # ( - # $ ( * + * 7 8 9 8 0: 0 1 * 1# # * + * ( - ; . $ # * 0 0 9 # : ( 0 " # 4 1 - 8 #/ 31 - # . # # < = >?@- .

(3)

# .1 * 0 " - $ 0 - .1 0 " 0 .1 * (- * + * 1 . . - 4 # + #$# $ - 1 . # . # " # 0 # + # * + * .1 # 0 A #-. - 1 +B* + - # 0 * + * 0 $ * / # * + * 0 # # $ ( #.

(4)

# 0 1 # + . # # # - . 1 # * 0 5 7 # 0 6 7 #6 7 0 # 0 . $ . 16 2 # # / * + * 1 # 0 1 $ 1 ( 1 ( 1 - 1 1 # * + * 7 0 0 ( 1 # * + * . # $ 1 ( 1 #* + * # # 1 $ . # # 1 #* + * < >C@ / + * ( # * + * # # * + * # # $ # # * # ( # $ ( * + * # - 1 0 ( * * + *- $ . #* 4 1 0 -* + -* 0 # . $ 1 ( # $ $ .1 1" 0 ( # * B $ #1. $ 0 # 7 #$ 1 ( # $ -. # $ #>- # $ 0 # $ ( # 0 * + * - 0 $ / + * 0 1 9/ : ( # 0-. - 4 5 $ $ ( # ( # 0- + 0 0 " $ 5 0 - # 6 $ 1 # 0 0 - # ( # 0 #/ 05

(5)

$ # 6 * 6 8 . " 6 $ 1 + - < !DE@- < !D @- < !DF@ # ( * + * * # # . 05 3 * # 0 # .1 1 / 5 0 1 - 73 - * +6 * $ + # ( + # 0 ( 6 ( # ( < = >E@ * $ . # ## 0 # 0 # # # . $ 6 ( # ( 0 #. . 1 0 1 # # 1 ( . # # # 0 0 # 1 4 * 1 $ ( = # 0- 0 " # .1 - * ; # 0 1 . ( # 0# 0 $ 1# $ . + # + 1 $ 1 ( # # 0 < !DF@- < DF@- <G7>>@ -. 0 # # * # ( ( / 1 - < >>@ ( . 0 ( . ( * + * ( 4 / 0 1 - # . 0 1 - * - # 4 - ( 0 " # 1 # * + * 0 - 0- . 0 . # ( +- 0 # # 0 ( # ( . # # # 0 # 0 0 . # # . $ #. # # . 1 4 1

(6)

< DF@ # < 88DD@ $ # # * ( # ( - # 0 $ 0 5 / + * ( 0 #.1 . 0 0 " +6 7 ( 0 #* * + * $ # 0 #6 ( 0 # .1 0$ 6 ( ( $ #.1 ( $ . # 1 * ( 1 1 $ 1 ( * + * 1 0 $ *- 1 ( + ( 1 # # 0 # * * + * 1 ( # # . 1 # # .1 ( * + * - ( 1 ( ( # ( . * # 0 * + * # ( < !DF@ # 0 - $ 0 . 4 1 # + * # 0 # 0 0 1 ( 4 0 1 ( #1 $ 1- ( # ( 0 # 4 $ * + # ( 4 1- # # # 0 0 * + * # - # - # 0 # 0 . # . $ * + # $ * + * 1 < 88DD@ 0 0 " $ ( . # 0 !7 8 # 0 " ( # .1 < DE@ . $ # ; . $ 0 # # 0 # # . # # # 0 * + * # * * + * 4 # # 0 * + * # 0 $ * # # #1 # # $ * + * 1 ( # 0 * + * ( 0 ( - $ . . 0 1 .1 0 * (

(7)

0 0 1 * 1 # ; + 1 1 # # 0B 0 # $ # # #1 # # $ * + * 1 ( # 0 * + * ( * . * * <2 8DH@ # 0 # # # * $ / 1 # . #* ( - 0 0 #0 * 00 . . . $ 4 # < DE@ 0$ # 0 " < = >E@ # * #5 * + . 0 I ( . , # ., # # # ( # 0 - #0 # # * + $ 1 1- # 0- 1 # . J * # $ # 0 # $ # $ - . # . 1 0 " * + $ $ $ # * + *- # - - ( - #1 # # # + $ . # # 1 ( * + * K $ *- * . 0 * + -. # (. 1* ( * 0 4 - * + # 1 . # 0 # ( 0 * + * # 0 ( # # 0 ( 1 # # . 0 . 1 1" # 31 # 0 -( 0 * + * # . $ #- ( # . 0 # 0 (. * + * 1 * + 0 # - . * 0 + ( #- * #1 . - ( #- . 0 . ( # - ( # # $ K $ # ( # 0 # . # * + *

(8)

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

(9)

1 3 # # - 0 / $ * # * + * * #B $ . , 1 $ #.1 * + * 1- #. O # 1 # # . * +- $ * . # * + * # - $ 0 - 4 $ # $ $ # - 0 * - . 0 ; * + * * $ 1 #- 1 * + # ; 0$ # # 0 ( # * $ # $ * * . # ( . # $ 1 3 # # . . - # # * * + * 0 # # 8 # < = >E@ ' . 2 2 . ' % . 3 A # 3 -P # - A 8 - # P - # -8 # 0 Q>E - 0 ?E,E>- 8 -8 0 - P R>>E < = >H@ ' . 2 2 . ' % . 3 !" # $ 987 -C G.: 38 38 ,>H,>C- 38 0- R>>H < >>@ 4 3 " % !" & - 8 7 - = 0 G 0 $ 1 # 01- R>>>

(10)

< DF@ 3 & ' ' & ( - 8 7 -8 # - DDF < 88DD@ 5 # 5 66 * , # & - 7 . 1 -R?- C- 9 DDD: < > @ + ) , ) ' / + . $ 1 - . 8 $ - / + . $ 1 - ?- ;,M - - R>>

< !DE@ 7 8 # , ( &

&"-$ 1 - - -DDE < !D @ 7 8 # 3 ) ' $ 1 9 QD : 3 - 3 0 5 - DD < !DF@ 7 8 # , * & - ( # # 7 . 01 9 73 QDF:- / + / + * 0 1 - - - DDF < > @ , + ,-& ( & , & ' 8 # 0 F 1 1 . #M 0 0 9 LM R>> :- ' 1R>> < > @ 3 , - & . / " -8 # 0 # - N R>> - ' - & - R>>

(11)

< >H@ , -- $ . - - R>>H -<2 8DH@ * ' 9 3 ( # * ( -G 7 0 - ! # A" 9 # :- #$ / + * 0 1 # . 1- . - DDH <G7>>@ 4 . , 0 !, -# $ / +- D- C9R>>>: < >C@ . 2 , ) # + ' 1 ' # + - ! M -R>>C < = >?@ 9 2 2 . ' % . 3 ) - - 3 / + 0 8 - / 8 RH- # $ $ 1 01-# $ - R>>? < => @ 9 % . 2 2 . 3 - - ! # - 38 38 ,> ,>?- 38 0-R>> < DE@ 5 ' 2 3 " # - 8 7 - $ 1 P1$ +1 -DDE

(12)