Github user xuchuanyin commented on a diff in the pull request: https://github.com/apache/carbondata/pull/2520#discussion_r204968918 --- Diff: docs/data-management-on-carbondata.md --- @@ -124,6 +124,41 @@ This tutorial is going to introduce all commands and data operations on CarbonDa TBLPROPERTIES ('streaming'='true') ``` + - **Local Dictionary Configuration** + + Local Dictionary is generated only for no-dictionary string/varchar datatype columns. It helps in: + 1. Getting more compression on dimension columns with less cardinality. + 2. Filter queries and full scan queries on No-dictionary columns with local dictionary will be faster as filter will be done on encoded data. + 3. Reducing the store size and memory footprint as only unique values will be stored as part of local dictionary and corresponding data will be stored as encoded data. + + By default, Local Dictionary will be enabled and generated for all no-dictionary string/varchar datatype columns. --- End diff -- The indent of â By defaultâ is wrong
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