[英]An Apache Storm bolt receive multiple input tuples from different spout/bolt
[英]How could the storm bolt receive multiple type tuple from different spout or other bolt?
我有兩個可序列化的類A和B。並且有兩種噴頭A_spout和B_spout。每個噴頭都發出並行類以栓接C。但是在執行方法方面,元組沒有什么區別,那么如何區分它們呢?
Bolt.execute()
每個輸入Tuple
包含一些元數據,這些元數據還包含它源自的輸入運算符:
public void execute(Tuple input) {
if(input.getSourceComponent().equals("A_Spout")) {
// do something
} else {
// data from B_Spout; do something different
}
}
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