Xuefu Zhang created HIVE-7327:
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Summary: Refactoring: Make Hive map side data processing reusable
Key: HIVE-7327
URL: https://issues.apache.org/jira/browse/HIVE-7327
Project: Hive
Issue Type: Sub-task
Affects Versions: 0.13.0
Reporter: Xuefu Zhang
Assignee: Xuefu Zhang
ExecMapper is Hive's mapper implementation for MapReduce. Table rows are read
by MR framework and processed by ExecMapper.map() method, which invokes Hive's
map-side operator tree starting from MapOperator. This task is to extract the
map-side data processing offered by the operator tree so that it can be used by
other execution engine such as Spark. This is purely refactoring the existing
code.
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