[MAPREDUCE-1367] LocalJobRunner should support parallel mapper execution - ASF JIRA

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Details

Type: Improvement
Status: Closed
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 0.21.0
Component/s: None
Labels:
None

Hadoop Flags:

Reviewed

Description

The LocalJobRunner currently supports only a single execution thread. Given the prevalence of multi-core CPUs, it makes sense to allow users to run multiple tasks in parallel for improved performance on small (local-only) jobs.

Attachments

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MAPREDUCE-1367.2.patch
12/Jan/10 00:06
24 kB
Aaron Kimball
MAPREDUCE-1367.3.patch
12/Jan/10 04:34
24 kB
Aaron Kimball
MAPREDUCE-1367.4.patch
12/Jan/10 20:51
26 kB
Aaron Kimball
MAPREDUCE-1367.5.patch
13/Jan/10 01:42
28 kB
Aaron Kimball
MAPREDUCE-1367.6.patch
27/Jan/10 03:45
28 kB
Aaron Kimball
MAPREDUCE-1367.7.patch
29/Jan/10 21:47
29 kB
Aaron Kimball
MAPREDUCE-1367.patch
09/Jan/10 00:16
22 kB
Aaron Kimball
MAPREDUCE-1367-branch1.patch
05/Oct/12 17:52
28 kB
Sandy Ryza

Issue Links

is cloned by

MAPREDUCE-2931 CLONE - LocalJobRunner should support parallel mapper execution

Closed

is depended upon by

MAPREDUCE-434 LocalJobRunner limited to single reducer

Closed

Activity

People

Assignee:: Aaron Kimball

Reporter:: Aaron Kimball

Votes:: 0 Vote for this issue

Watchers:: 14 Start watching this issue

Dates

Created:: 08/Jan/10 23:34

Updated:: 04/Jul/13 10:50

Resolved:: 30/Jan/10 01:24