RE: [Feature Proposal] Proposal for offline and DDL localdictionary support

Posted by xuchuanyin on Nov 12, 2018; 2:02pm
URL: http://apache-carbondata-dev-mailing-list-archive.168.s1.nabble.com/Feature-Proposal-Proposal-for-offline-and-DDL-local-dictionary-support-tp67620p68208.html

Does local dictionary harm the performance so that they want to disable it for some specific columns?

Sent from laptop

From: xubo245
Sent: Monday, November 12, 2018 10:05 AM
To: [hidden email]
Subject: Re: [Feature Proposal] Proposal for offline and DDL localdictionary support

SDK has supported local dictionary:
org.apache.carbondata.sdk.file.CarbonWriterBuilder#localDictionaryThreshold
org.apache.carbondata.sdk.file.CarbonWriterBuilder#enableLocalDictionary

But don't support LOCAL_DICTIONARY_INCLUDE and LOCAL_DICTIONARY_EXCLUDE.
I think we should support it.  There are some users want to use
LOCAL_DICTIONARY_EXCLUDE.





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