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From "Ravi Prakash (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7985) maven build should be super fast when there are no changes
Date Wed, 21 Mar 2012 17:33:41 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13234555#comment-13234555

Ravi Prakash commented on HADOOP-7985:

In hadoop-common-project/hadoop-common:
 * Touchz.java should be renamed to Touch.java to avoid compilation everytime.
 * Record IO generated test files which were compiled everytime. We could modify RccTask.java
to doCompile only when sourceFile is newer than the destination file
These are just 2 seconds of the 24 seconds needed to build hadoop-common. So obviously not
substantial. Will keep looking. 

I'm beginning to think running from JARs might not be the best idea to have a quick dev cycle.
Maybe I should try running from the target/classes directories and skip building the jar altogether.
> maven build should be super fast when there are no changes
> ----------------------------------------------------------
>                 Key: HADOOP-7985
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7985
>             Project: Hadoop Common
>          Issue Type: Wish
>          Components: build
>    Affects Versions: 0.23.0
>            Reporter: Ravi Prakash
>              Labels: build, maven
> I use this command "mvn -Pdist -P-cbuild -Dmaven.javadoc.skip -DskipTests install" to
build. Without ANY changes in code, running this command takes 1:32. It seems to me this is
too long. Investigate if this time can be reduced drastically.

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