FAQ
I see the same strange behavior on 2-node cluster with 0.18.3, 0.19.1 and
snv's branch-0.20.0...
2 nodes:
"master1" running NameNode, JobTracker, DataNode, TaskTracker.
"slave1" running DataNode, TaskTracker.

PROBLEM: "master" trying fetch data of "attempt" that running on slave,
BUT connecting to "localhost" for unknown reason:

(master's console:)
09/03/06 17:15:01 WARN mapred.JobClient: Error reading task
outputhttp://localhost:50060/tasklog?plaintext=true&taskid=attempt_200903061711_0001_m_000000_0&filter=stdout

But "attempt_200903061711_0001_m_000000_0" i have found in "logs/userlogs"
on "slave"!
"master" trying to fetch it, but connects to itself and, of course, can't
find if (HTTP 410)

wget
"http://localhost:50060/tasklog?plaintext=true&taskid=attempt_200903061711_0001_m_000000_0&filter=stdout"
"Failed to retrieve stderr log for task:
attempt_200903061711_0001_m_000001_0"

In the "logs/userlogs" on master there are some other "attempt"s.

(Of course, little by little all work "migrates" to "master" and all the
Job finishing successfully).

Search Discussions

Discussion Posts

Follow ups

Related Discussions

Discussion Navigation
viewthread | post
posts ‹ prev | 1 of 5 | next ›
Discussion Overview
groupcommon-user @
categorieshadoop
postedMar 6, '09 at 2:39p
activeMar 9, '09 at 11:14a
posts5
users3
websitehadoop.apache.org...
irc#hadoop

People

Translate

site design / logo © 2022 Grokbase