https://issues.apache.org/jira/browse/KYLIN-2149
Check this link, you need choose between use one or other
Some times would be great use both together
On 17 November 2017 at 06:43, doom <43535...@qq.com> wrote:
> So what's the second code segment mean in AggregationGroup build step?
> is it means replace the hierarchy dim with the joint dims witch contain it?
>
>
> ------------------ 原始邮件 ------------------
> *发件人:* "ShaoFeng Shi";<shaofeng...@apache.org>;
> *发送时间:* 2017年11月17日(星期五) 下午2:02
> *收件人:* "user"<user@kylin.apache.org>;
> *主题:* Re: Can hierarchyDims contain jointDims
>
> Joint could not be used in the hierarchy.
>
> Joint means treating multiple dimensions as one: they either all appeared,
> either all not; It is a conflict with hierarchy.
>
> 2017-11-16 21:29 GMT+08:00 doom <43535...@qq.com>:
>
>> HI ALL:
>> I read the src code of kylin 2.2, and find:
>>
>> In class CubeDes, if hierarchyDims contain jointDims will throw exception.
>> public void validateAggregationGroups() {
>> ...
>> if (CollectionUtils.containsAny(hierarchyDims, jointDims)) {
>> logger.error("Aggregation group " + index + " hierarchy
>> dimensions overlap with joint dimensions");
>> throw new IllegalStateException(
>> "Aggregation group " + index + " hierarchy
>> dimensions overlap with joint dimensions: "
>> +
>> ensureOrder(CollectionUtils.intersection(hierarchyDims,
>> jointDims)));
>> }
>>
>> But in class AggregationGroup will replace the hierarchy dim with the
>> joint dims witch contain it.
>> private void buildHierarchyMasks(RowKeyDesc rowKeyDesc) {
>> .....
>> for (int i = 0; i < hierarchy_dims.length; i++) {
>> TblColRef hColumn = cubeDesc.getModel().findColumn
>> (hierarchy_dims[i]);
>> Integer index = rowKeyDesc.getColumnBitIndex(hColumn);
>> long bit = 1L << index;
>>
>> // combine joint as logic dim
>> if (dim2JointMap.get(bit) != null) {
>> bit = dim2JointMap.get(bit);
>> }
>>
>> mask.fullMask |= bit;
>> allMaskList.add(mask.fullMask);
>> dimList.add(bit);
>> }
>> }
>>
>> do i understand in a wrong way?
>>
>>
>>
>
>
> --
> Best regards,
>
> Shaofeng Shi 史少锋
>
>
