[
https://issues.apache.org/jira/browse/HADOOP-236?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Robert Chansler updated HADOOP-236:
-----------------------------------
Release Note: Changed connection protocol job tracker and task tracker so
that task tracker will not connect to a job tracker with a different build
version. (was: While making the initial contact, tasktracker queries the build
version from jobtracker. If the returned build version does not match to its
own, then tasktracker shut down itself.)
> job tracker should refuse connection from a task tracker with a different
> version number
> ----------------------------------------------------------------------------------------
>
> Key: HADOOP-236
> URL: https://issues.apache.org/jira/browse/HADOOP-236
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.2.1
> Reporter: Hairong Kuang
> Assignee: Sharad Agarwal
> Fix For: 0.18.0
>
> Attachments: 236_v1.patch, 236_v2.patch
>
>
> After one mapred system upgrade, we noticed that all tasks assigned to one
> task tracker failed. It turned out that for some reason the task tracker was
> not upgraded.
> To avoid this, a task tracker should reports its version # when it registers
> itsself with a job tracker. If the job tracker receives an inconsistent
> version #, it should refuse the connection.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
