[HADOOP-1984] some reducer stuck at copy phase and progress extremely slowly - ASF JIRA

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Details

Type: Bug
Status: Closed
Priority: Critical
Resolution: Fixed
Affects Version/s: 0.16.0
Fix Version/s: 0.16.0
Component/s: None
Labels:
None

Description

In many cases, some reducers got stuck at copy phase, progressing extremely slowly.
The entire cluster seems doing nothing. This causes a very bad long tails of otherwise well tuned map/red jobs.

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HADOOP-1984.patch
30/Oct/07 09:33
3 kB
Amar Kamat
HADOOP-1984-simple.patch
20/Nov/07 05:52
6 kB
Amar Kamat
HADOOP-1984-simple.patch
20/Nov/07 10:46
7 kB
Amar Kamat
HADOOP-1984-simple.patch
26/Nov/07 16:48
7 kB
Amar Kamat

Activity

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Assignee:: Amar Kamat

Reporter:: Runping Qi

Votes:: 0 Vote for this issue

Watchers:: 0 Start watching this issue

Dates

Created:: 02/Oct/07 13:31

Updated:: 08/Jul/09 16:52

Resolved:: 29/Nov/07 07:08