[HIVE-1738] Optimize Key Comparison in GroupByOperator - ASF JIRA

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Details

Type: Improvement
Status: Closed
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 0.7.0
Component/s: None
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Hadoop Flags:

Reviewed

Description

GroupByOperator uses ObjectInspectorUtils.compare() to compare keys, which is written for generalized object comparisons, which is not optimized for group-by operator. By optimizing this logic, we expect to see obvious improvements in GroupByOperator.

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HIVE.1738.3.patch
21/Oct/10 21:11
12 kB
Siying Dong
HIVE.1738.2.patch
21/Oct/10 17:32
11 kB
Siying Dong
HIVE.1738.1.patch
21/Oct/10 10:07
11 kB
Siying Dong

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Assignee:: Siying Dong

Reporter:: Siying Dong

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Dates

Created:: 21/Oct/10 01:05

Updated:: 16/Dec/11 23:59

Resolved:: 22/Oct/10 04:57