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https://reviews.apache.org/r/69700/
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Review request for hive, Ashutosh Chauhan and Jesús Camacho Rodríguez.


Bugs: HIVE-21112
    https://issues.apache.org/jira/browse/HIVE-21112


Repository: hive-git


Description
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S3 Select enables applications to retrieve only a subset of data from an object 
by using simple SQL expressions.

S3A connector for Hadoop adds an API that aims at supporting S3 select queries. 
This issue initiates the work needed on the Hive side to create the S3 queries 
from the projection and filter expressions pushed to TS operators.


Diffs
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  common/src/java/org/apache/hadoop/hive/conf/Constants.java ee954d9 
  common/src/java/org/apache/hadoop/hive/conf/HiveConf.java b213609 
  ql/src/java/org/apache/hadoop/hive/ql/exec/FetchOperator.java 183fae5 
  ql/src/java/org/apache/hadoop/hive/ql/exec/FunctionRegistry.java d7f069e 
  ql/src/java/org/apache/hadoop/hive/ql/io/HiveInputFormat.java 6bac285 
  ql/src/java/org/apache/hadoop/hive/ql/io/S3SelectManager.java PRE-CREATION 
  ql/src/test/org/apache/hadoop/hive/ql/io/TestS3SelectManager.java 
PRE-CREATION 


Diff: https://reviews.apache.org/r/69700/diff/1/


Testing
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Tested on real S3 environment.


Thanks,

Miklos Gergely

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