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| <h1>Apache CarbonData</h1> |
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| Fully indexed columnar and Hadoop native data-store for processing heavy analytical workloads and detailed queries on big data. |
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| CarbonData has proven to manage Petabyte of data running on extraordinarily low-cost hardware and answer queries around 10 times faster than the current open source solutions. |
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| Carbondata uses engineered optimizations targeted to improve performance of analytical queries which can include filters, aggregation and distinct counts. |
| The required data is stored in an indexed, well organized, read-optimized format. |
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| <h3 class="key-feature--title">Unique Data Organization</h3> |
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| CarbonData stores data in columnar format. It differs from traditional columnar format that the columns in each row-group (data block) is sorted independent from the other columns. |
| Though this arrangement requires CarbonData to store the row-number mapping against each column value, it makes possible to use binary search for faster filtering and since the value |
| are sorted, similar values come together which yields better compression and offsets the storage overhead required by the row number mapping. |
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| <h3 class="key-feature--title">Multi Level Indexing</h3> |
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| CarbonData uses multiple indices at various levels to enable faster search and speed up query processing.<br/> |
| <b>Global Multi Dimensional Keys (MDK)</b> based B+Tree index for all non-measure columns aids in quickly locating the row groups (data blocks) that contain the data matching search/filter criteria.<br/> |
| <b>Min-Max Index for all columns</b> aids in quickly locating the rows that contain the data matching search/filter criteria.<br/> |
| <b>Data Block level Inverted Index</b> for all columns aids in quickly locating the rows that contain the data matching search/filter criteria within a row group (data blocks). |
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| <h3 class="key-feature--title">Advanced Push Down Optimizations</h3> |
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| CarbonData pushes as much of query processing as possible close to the data to minimize the amount of data being read, processed, converted and transmitted/shuffled. |
| Since CarbonData uses columnar format, it reads only the required columns from the store and also reads only the rows that match the filter conditions provided by the query. |
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| <b>CarbonData new website! (26/11/16)</b><br/> |
| The CarbonData team is pleased to announce the new CarbonData website. |
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| <b>CarbonData 0.2.0 released! (21/11/16)</b><br/> |
| CarbonData 0.2.0 has been released. This is a major new release including bug fixes and improvements. |
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| CarbonData is your project ! |
| CarbonData is an <a href="http://www.apache.org">Apache Software Foundation</a> project, |
| available under the Apache v2 license.<br/> |
| It's a complete open community, always listening proposals and comments.<br/> |
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| CarbonData is powerfull storage for big data providing:<br/><br/> |
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| <li>File Structure and Format</li> |
| <li>DDL Operations</li> |
| <li>DML Operations</li> |
| <li>Data Management</li> |
| <li>Clustered deployment</li> |
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| Ready, efficient, and productive with CarbonData in a minute !<br/> |
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| Find all you need to start with CarbonData ... |
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