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commit 85dc0304743e74c7abc00d59d4d4b5e5f619d03e Author: Indhumathi27 <indhumathi...@gmail.com> AuthorDate: Thu Jul 25 17:02:26 2019 +0530 [HOTFIX]Update Documentation for MV datamap This closes #3335 --- README.md | 1 + docs/datamap/mv-datamap-guide.md | 2 ++ 2 files changed, 3 insertions(+) diff --git a/README.md b/README.md index 3226a30..da5b547 100644 --- a/README.md +++ b/README.md @@ -60,6 +60,7 @@ CarbonData is built using Apache Maven, to [build CarbonData](https://github.com * [CarbonData Lucene DataMap](https://github.com/apache/carbondata/blob/master/docs/datamap/lucene-datamap-guide.md) * [CarbonData Pre-aggregate DataMap](https://github.com/apache/carbondata/blob/master/docs/datamap/preaggregate-datamap-guide.md) * [CarbonData Timeseries DataMap](https://github.com/apache/carbondata/blob/master/docs/datamap/timeseries-datamap-guide.md) + * [CarbonData MV DataMap](https://github.com/apache/carbondata/blob/master/docs/datamap/mv-datamap-guide.md) * [SDK Guide](https://github.com/apache/carbondata/blob/master/docs/sdk-guide.md) * [C++ SDK Guide](https://github.com/apache/carbondata/blob/master/docs/csdk-guide.md) * [Performance Tuning](https://github.com/apache/carbondata/blob/master/docs/performance-tuning.md) diff --git a/docs/datamap/mv-datamap-guide.md b/docs/datamap/mv-datamap-guide.md index d22357c..fc1ffd5 100644 --- a/docs/datamap/mv-datamap-guide.md +++ b/docs/datamap/mv-datamap-guide.md @@ -65,6 +65,7 @@ EXPLAIN SELECT a, sum(b) from maintable group by a; CREATE DATAMAP agg_sales ON TABLE sales USING "MV" + DMPROPERTIES('TABLE_BLOCKSIZE'='256 MB','LOCAL_DICTIONARY_ENABLE'='false') AS SELECT country, sex, sum(quantity), avg(price) FROM sales @@ -97,6 +98,7 @@ EXPLAIN SELECT a, sum(b) from maintable group by a; property is inherited from parent table, which allows user to provide different tableproperties for child table * MV creation with limit or union all ctas queries is unsupported + * MV datamap does not support Streaming #### How MV tables are selected