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https://issues.apache.org/jira/browse/TWILL-63?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15806591#comment-15806591
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ASF GitHub Bot commented on TWILL-63:
-------------------------------------
Github user albertshau commented on a diff in the pull request:
https://github.com/apache/twill/pull/21#discussion_r95050605
--- Diff:
twill-yarn/src/main/java/org/apache/twill/yarn/YarnTwillRunnerService.java ---
@@ -277,9 +281,16 @@ public TwillPreparer prepare(TwillApplication
application) {
Preconditions.checkState(serviceDelegate.isRunning(), "Service not
start. Please call start() first.");
final TwillSpecification twillSpec = application.configure();
final String appName = twillSpec.getName();
+ RunId runId = RunIds.generate();
+ Location appLocation = locationFactory.create(String.format("/%s/%s",
twillSpec.getName(), runId.getId()));
+ LocationCache locationCache = this.locationCache;
+ if (locationCache == null) {
+ locationCache = new NoCachingLocationCache(appLocation);
--- End diff --
nit: extra space
> Speed up application launch time
> --------------------------------
>
> Key: TWILL-63
> URL: https://issues.apache.org/jira/browse/TWILL-63
> Project: Apache Twill
> Issue Type: Improvement
> Components: yarn
> Affects Versions: 0.2.0-incubating
> Reporter: Terence Yim
> Assignee: Terence Yim
> Fix For: 0.10.0
>
>
> Currently when launching an application, two new jars are always created
> locally, one for AM (appMaster.jar) and one for Container (container.jar) and
> copied to HDFS before submitting the application. The jar files could
> potentially be big and if it doesn't changed, it should require copying to
> HDFS again.
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