[
https://issues.apache.org/jira/browse/HADOOP-2092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12561953#action_12561953
]
amareshwari edited comment on HADOOP-2092 at 1/24/08 1:29 AM:
---------------------------------------------------------------------------
bq. Please add locking around the isDone method in the context and updating the
done flag.
Do we really need a lock here? Since, boolean is one byte memory and ping
thread only reads it. Ping thread can read a stale value, since in the next
iteration it will read the correct value.
Without doing a lock, we save the "lock" overhead.
was (Author: amareshwari):
bq. Please add locking around the isDone method in the context and updating
the done flag.
Do we really need a lock here? Since, boolean is one byte memory and ping
thread only reads it. Ping thread can read a stale value, since in the next
iteration it will read the correct value.
> 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 Core
> Issue Type: Bug
> Components: pipes
> Reporter: Amareshwari Sri Ramadasu
> Assignee: Amareshwari Sri Ramadasu
> Priority: Blocker
> Fix For: 0.16.0
>
> Attachments: patch-2092.1.txt, patch-2092.1.txt, patch-2092.txt,
> patch-2092.txt, patch-2092.txt, patch-2092.txt
>
>
> 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.
