Can someone help me to answer this question? I was still waiting for answer.
张天生 <[email protected]>于2016年8月15日周一 上午11:28写道： > I have a dimension user_tags, it is a multi-value column, for example the > value is "1_3_12_15_27_35_...", it was seperated by "_". As i known, kylin > don't directly propress this multi-value column, it must preprocess it to a > single value column, but it will increase record count to 50~100 times, the > data is too big.So is there a way to deal with multi-value dimension, it > don't need to split the value to many record, in calculate dimension > cardinality, it can read original data and automate split the value to > multi-value and process, and it will save disk i/o and cpu spending. >
