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我想在每个元组上应用ScrubFunction并返回具有更新值的元组。级联 - cascading.tuple.TupleException:未能设置值
但我得到异常如..
Caused by: cascading.tuple.TupleException: failed to set a value, tuple may not be initialized with values, is zero length
示例代码:
TupleEntry argument = functionCall.getArguments();
Tuple result = new Tuple();
result.setInteger(0, argument.getInteger(0));
result.setString(1, argument.getString(1).toUpperCase());
result.setString(2, argument.getString(2));
result.setString(3, argument.getString(3));
result.setString(4, argument.getString(4));
result.setString(5, argument.getString(5));
functionCall.getOutputCollector().add(result);
如果我想以更新Tuple
几个字段,并返回更新后的值。
我可以直接在TupleEntry
进行更新并返回。