[
https://issues.apache.org/jira/browse/HADOOP-2092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12537252
]
Arun C Murthy commented on HADOOP-2092:
---------------------------------------
+1
bq.But, I still think that we need to handle the case where the pipes process
is doing a long computation (without frequent progress reports) and the Java
side gets killed during that time.
The two options are:
* Background thread which periodically pings the parent java map/reduce task
to check if it is alive and kills the c++ process if not.
* Use unix jobcontrol features i.e. make the java task the session the
_process group leader_ (via setsid) and then send SIGTERM to the entire process
group.
Being old-skool, I prefer jobcontrol. *smile*
> Pipes C++ task does not die even if the Java tasks die
> ------------------------------------------------------
>
> Key: HADOOP-2092
> URL: https://issues.apache.org/jira/browse/HADOOP-2092
> Project: Hadoop
> Issue Type: Bug
> Components: pipes
> Reporter: Amareshwari Sri Ramadasu
> Assignee: Amareshwari Sri Ramadasu
> Fix For: 0.16.0
>
>
> Pipes process does not die, when the java map task dies.
> Pipes process does not die even when the cluster is down.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
