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From "Armando Miraglia (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (GIRAPH-756) Provide a way to halt running application
Date Sat, 21 Sep 2013 17:15:51 GMT

    [ https://issues.apache.org/jira/browse/GIRAPH-756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13773855#comment-13773855
] 

Armando Miraglia commented on GIRAPH-756:
-----------------------------------------

Hi guys.

At first I thought it was an issue related to java 7 (GIRAPH-762) but apparently is not. I
was trying to test some changes I have made on the website, running:

mvn clean site -DskipTests -Phadoop_2.0.0 -Ddependency.locations.enabled=false

And I had this compilation error:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-site-plugin:3.2:site (default-site)
on project giraph-parent: failed to get report for org.apache.maven.plugins:maven-javadoc-plugin
: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.0:compile (default-compile)
on project giraph-core: Compilation failure: Compilation failure:
[ERROR] /home/armax00/giraph/giraph-core/src/main/java/org/apache/giraph/job/HaltApplicationUtils.java:[78,49]
unreported exception java.lang.InterruptedException; must be caught or declared to 
be thrown
[ERROR] /home/armax00/giraph/giraph-core/src/main/java/org/apache/giraph/job/HaltApplicationUtils.java:[81,50]
unreported exception java.lang.InterruptedException; must be caught or declared to 
be thrown

My java version:
$ java -version
java version "1.6.0_27"
OpenJDK Runtime Environment (IcedTea6 1.12.6) (6b27-1.12.6-1ubuntu0.12.04.2)
OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode)

The patch I have provided at GIRAPH-762 solves the problem for me.
                
> Provide a way to halt running application
> -----------------------------------------
>
>                 Key: GIRAPH-756
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-756
>             Project: Giraph
>          Issue Type: Improvement
>            Reporter: Maja Kabiljo
>            Assignee: Maja Kabiljo
>         Attachments: GIRAPH-756.patch
>
>
> It would be good to have a way to tell a running application to halt after current superstep
is done instead of just killing it. For example, it would be useful when we have a long running
application, but we need resources for another job, or we see that the result is good enough,
we can just halt it and still get the output.

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