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https://issues.apache.org/jira/browse/KYLIN-2543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shaofeng SHI resolved KYLIN-2543.
---------------------------------
Resolution: Fixed
bug fixed, and passed integration test.
> Still build dictionary for TopN group by column even using non-dict encoding
> ----------------------------------------------------------------------------
>
> Key: KYLIN-2543
> URL: https://issues.apache.org/jira/browse/KYLIN-2543
> Project: Kylin
> Issue Type: Bug
> Components: Job Engine
> Affects Versions: v2.0.0
> Reporter: Shaofeng SHI
> Assignee: Shaofeng SHI
> Fix For: v2.0.0
>
>
> Using latest 2.0 beta, create a cube with TopN, but specifying using non-dict
> encoding, the JSON is like:
> {code}
> {
> "name": "TOP_CUSTOMER",
> "function": {
> "expression": "TOP_N",
> "parameter": {
> "type": "column",
> "value": "P_LINEORDER.V_REVENUE",
> "next_parameter": {
> "type": "column",
> "value": "P_LINEORDER.LO_CUSTKEY"
> }
> },
> "returntype": "topn(100,4)",
> "configuration": {
> "topn.encoding.P_LINEORDER.LO_CUSTKEY": "integer:4",
> "topn.encoding_version.P_LINEORDER.LO_CUSTKEY": "1"
> }
> }
> {code}
> But, in the third step "Extract Fact Table Distinct Columns", there is still
> a reducer running for "P_LINEORDER.LO_CUSTKEY"; as this column is a UHC, it
> takes a long time and finally got failed.
> Expected behavior: no reducer for this column. 1.6.0 doesn't have this issue;
> this is a new issue in 2.0 during the upgrade to snowflake.
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