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%)(($,-./)$ !"#$%#&( !"#&)#&"( phases. !"#&#&*( !"#&+#&+( !"#!#&%( !"#&#!( Rack  layer   !"#*#)( !*#,,#$( !*#,$#&( !*#,"#( !*#,%#"( !*#!)#+( !*#!#%( !*#!%#,,( !*#))#,!( !*#)#,)( !*#)+#,&( !*#$!#,( !*#$&#,"( Shuffle Phase !*#$*#,*( !*#&,#,*( Buffer Usage During !*#&$#,+( !*#&"#,%( !*#&%#!,( !*#)#!!( -$,&+(.!( slower job completion times. !*##!!( !*#+#!$( !+#,!#!&( !+#,&#!( !+#,*#!"( !+#!,#!*( -$,&+(.)( !+#!$#!%( !+#!"#),( !+#!%#)!( !+#))#))( !+#)#)$( -$,"&( !+#)+#)&( !+#$!#)( !+#$&#)*( !+#$*#)+( !+#&,#)%( /01(2( !+#&$#$,( !+#&"#$!( !+#&%#$$( !+#)#$&( !+##$( !+#+#$"( 345674(2( !%#,!#$*( !%#,&#$+( !%#,*#$%( !%#!,#&!( !%#!$#&)( !%#!"#&)( Replication !%#!%#&$( !%#))#&&( !%#)#&"( !%#)+#&*( !%#$!#&+( !%#$&#&%( !%#$*#,( Buffer Usage During output !%#&,#!( !%#&$#)( !%#&"#&( !%#&%#( TeraSort(ETL) N3k Buffer Analysis (10TB) !%#)#"( !%##*( •  Optimized buffer sizes are required to avoid packet loss leading to !"#$%"&()*"+$ The  AggregaEon  switch  buffer  remained  flat  as  the  bursts  were  absorbed  at  the  Top  of   •  The buffer utilization is highest during the shuffle and output replication58

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