Github user HeartSaVioR commented on the pull request:
https://github.com/apache/storm/pull/525#issuecomment-94241652
It also runs well with complex DAG,
```
1 - 2 - 3 - 5
\ 4 /
```
```
{
"task->component":{
"24":"__acker",
"25":"__acker",
"20":"__acker",
"21":"__acker",
"22":"__acker",
"23":"__acker",
"1":"1",
"3":"3",
"2":"2",
"5":"5",
"4":"4",
"7":"__acker",
"6":"__acker",
"9":"__acker",
"8":"__acker",
"11":"__acker",
"10":"__acker",
"13":"__acker",
"12":"__acker",
"15":"__acker",
"14":"__acker",
"17":"__acker",
"16":"__acker",
"19":"__acker",
"18":"__acker"
},
"stream->target->grouping":{
"default":{
"2":"SHUFFLE"
}
},
"streams":[
"default"
],
"stream->outputfields":{
"default":[
"word"
]
},
"taskid":1,
"source->stream->grouping":{
},
"componentid":"1"
}
```
```
{
"task->component":{
"24":"__acker",
"25":"__acker",
"20":"__acker",
"21":"__acker",
"22":"__acker",
"23":"__acker",
"1":"1",
"3":"3",
"2":"2",
"5":"5",
"4":"4",
"7":"__acker",
"6":"__acker",
"9":"__acker",
"8":"__acker",
"11":"__acker",
"10":"__acker",
"13":"__acker",
"12":"__acker",
"15":"__acker",
"14":"__acker",
"17":"__acker",
"16":"__acker",
"19":"__acker",
"18":"__acker"
},
"stream->target->grouping":{
"default":{
"3":"LOCAL_OR_SHUFFLE",
"4":"LOCAL_OR_SHUFFLE"
}
},
"streams":[
"default"
],
"stream->outputfields":{
"default":[
"word"
]
},
"taskid":2,
"source->stream->grouping":{
"1":{
"default":"SHUFFLE"
}
},
"componentid":"2"
}
```
```
{
"task->component":{
"24":"__acker",
"25":"__acker",
"20":"__acker",
"21":"__acker",
"22":"__acker",
"23":"__acker",
"1":"1",
"3":"3",
"2":"2",
"5":"5",
"4":"4",
"7":"__acker",
"6":"__acker",
"9":"__acker",
"8":"__acker",
"11":"__acker",
"10":"__acker",
"13":"__acker",
"12":"__acker",
"15":"__acker",
"14":"__acker",
"17":"__acker",
"16":"__acker",
"19":"__acker",
"18":"__acker"
},
"stream->target->grouping":{
"default":{
"5":"ALL"
}
},
"streams":[
"default"
],
"stream->outputfields":{
"default":[
"word"
]
},
"taskid":3,
"source->stream->grouping":{
"2":{
"default":"LOCAL_OR_SHUFFLE"
}
},
"componentid":"3"
}
```
```
{
"task->component":{
"24":"__acker",
"25":"__acker",
"20":"__acker",
"21":"__acker",
"22":"__acker",
"23":"__acker",
"1":"1",
"3":"3",
"2":"2",
"5":"5",
"4":"4",
"7":"__acker",
"6":"__acker",
"9":"__acker",
"8":"__acker",
"11":"__acker",
"10":"__acker",
"13":"__acker",
"12":"__acker",
"15":"__acker",
"14":"__acker",
"17":"__acker",
"16":"__acker",
"19":"__acker",
"18":"__acker"
},
"stream->target->grouping":{
"default":{
"5":"SHUFFLE"
}
},
"streams":[
"default"
],
"stream->outputfields":{
"default":[
"word"
]
},
"taskid":4,
"source->stream->grouping":{
"2":{
"default":"LOCAL_OR_SHUFFLE"
}
},
"componentid":"4"
}
```
```
{
"task->component":{
"24":"__acker",
"25":"__acker",
"20":"__acker",
"21":"__acker",
"22":"__acker",
"23":"__acker",
"1":"1",
"3":"3",
"2":"2",
"5":"5",
"4":"4",
"7":"__acker",
"6":"__acker",
"9":"__acker",
"8":"__acker",
"11":"__acker",
"10":"__acker",
"13":"__acker",
"12":"__acker",
"15":"__acker",
"14":"__acker",
"17":"__acker",
"16":"__acker",
"19":"__acker",
"18":"__acker"
},
"stream->target->grouping":{
},
"streams":[
"default"
],
"stream->outputfields":{
"default":[
"word"
]
},
"taskid":5,
"source->stream->grouping":{
"3":{
"default":"ALL"
},
"4":{
"default":"SHUFFLE"
}
},
"componentid":"5"
}
```
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