[CARBONDATA-2051] Added like query ends with and contains with filter push down suport to carbondata

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.3.0
• Assignee: Manish Gupta
• Reporter: Manish Gupta
• Created: 18/Jan/18 08:58
• Updated: 18/Jan/18 17:29
• Resolved: 18/Jan/18 17:29

Description

Problem
Current like filter with start with expression is only pushed down to carbondata. In case of ends with and contains like filter all the data is given back to spark and then spark applies the filter on it.
This behavior is fine for the queries which has lesser number of queried columns. But as the number of columns and data increases there is performance impact because the data being sent to spark becomes more thereby increasing the IO.
If like filter is push down then first filter column is read and blocks are pruned. In this cases the data returned to the spark is after applying the filter and only blocklets matching the data are fully read. This reduces IO and increases the query performance.

Solution
Modify code to push down like query with ends and contains with filter

Issue Links

• links to: GitHub Pull Request #1830