@Override
public boolean open(long partitionId, long epochId) {
//System.out.println("partitionId:"+partitionId+"=== epochId:"+epochId);
return true;
}
@Override
public void process(Row value) {
FileWriter fileWriter = null;
try {
fileWriter = new FileWriter(path, true);
fileWriter.write(value.mkString());
fileWriter.close();
} catch (IOException e) {
e.printStackTrace();
}
FileWriter fileWriter2 = null;
try {
fileWriter2 = new FileWriter(path2, true);
fileWriter2.write(value.mkString());
fileWriter2.close();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println(value.mkString());
}
@Override
public void close(Throwable errorOrNull) {
System.out.println("==========close=============");
}
需求是我的数据需要进行多分支的处理。ForeachWriter中的process方法可以做到多分支处理。但是只能处理一行数据,所以我想知道有没有办法可以处理一批数据,还可以多分支