Alexander created KYLIN-4803:
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Summary: Hive Global Dictionary - TopNMeasureType
NullPointerException
Key: KYLIN-4803
URL: https://issues.apache.org/jira/browse/KYLIN-4803
Project: Kylin
Issue Type: Bug
Affects Versions: v3.1.1
Reporter: Alexander
I've read wiki article, and succesfully test it on count_distinct(bitmap)I've
read wiki article, and succesfully test it on count_distinct(bitmap).
When add measure like TOP_N, and have the same column.
i.e.
a. Measure BUYER_CNT_HLL - COUNT_DISTINCT Value:KYLIN_SALES.BUYER_ID,
Type:column bitmap
b. Measure TOP_SELLER - TOP_N SUM|ORDER BY:KYLIN_SALES.PRICE Group
By:KYLIN_SALES.BUYER_ID topn(100,4)
Then exception on step - Build Cube with Spark araise:
{code:java}
20/10/30 07:33:11 ERROR executor.Executor: Exception in task 1.0 in stage 0.0
(TID 1)20/10/30 07:33:11 ERROR executor.Executor: Exception in task 1.0 in
stage 0.0 (TID 1)java.lang.NullPointerException at
org.apache.kylin.dimension.DictionaryDimEnc.<init>(DictionaryDimEnc.java:63) at
org.apache.kylin.dimension.DictionaryDimEnc.<init>(DictionaryDimEnc.java:58) at
org.apache.kylin.measure.topn.TopNMeasureType.getDimensionEncodings(TopNMeasureType.java:535)
at
org.apache.kylin.measure.topn.TopNMeasureType.access$200(TopNMeasureType.java:58)
at
org.apache.kylin.measure.topn.TopNMeasureType$1.valueOf(TopNMeasureType.java:146)
at
org.apache.kylin.measure.topn.TopNMeasureType$1.valueOf(TopNMeasureType.java:127)
at
org.apache.kylin.engine.mr.common.BaseCuboidBuilder.buildValueObjects(BaseCuboidBuilder.java:118)
{code}
It's because there is no dictionary for BUYER_ID
In log file i see:
Enable hive global dictionary for DEFAULT.KYLIN_SALES.BUYER_ID
But in fact, TopNMeasureType: dictionaryMap do not have
DEFAULT.KYLIN_SALES.BUYER_ID
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