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Posted to issues@kylin.apache.org by "hongbin ma (JIRA)" <ji...@apache.org> on 2016/08/03 04:38:20 UTC
[jira] [Created] (KYLIN-1936) Improve enable limit logic
(exactAggregation is too strict)
hongbin ma created KYLIN-1936:
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Summary: Improve enable limit logic (exactAggregation is too strict)
Key: KYLIN-1936
URL: https://issues.apache.org/jira/browse/KYLIN-1936
Project: Kylin
Issue Type: Improvement
Reporter: hongbin ma
Assignee: hongbin ma
from zhaotianshuo@meizu.com:
recently I got the following error while execute query on a cube which is not that big( about 400mb, 20milion record)
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Error while executing SQL "select FCRASHTIME,count(1) from UXIP.EDL_FDT_OUC_UPLOAD_FILES group by FCRASH_ANALYSIS_ID,FCRASHTIME limit 1": Scan row count exceeded threshold: 10000000, please add filter condition to narrow down backend scan range, like where clause.
I guess what it scan were the intermediate result, but It doesn't any order by,also the result count is limit to just 1.so it could scan to find any record with those two dimension and wala.
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