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From "Bill Havanki" <bhava...@clouderagovt.com>
Subject Re: Review Request 15279: ACCUMULO-1556: Clarify initialization error messages for pre-initialized filesystem
Date Wed, 06 Nov 2013 20:41:50 GMT


> On Nov. 6, 2013, 2:49 p.m., Sean Busbey wrote:
> > src/server/src/test/java/org/apache/accumulo/server/util/InitializeTest.java, line
31
> > <https://reviews.apache.org/r/15279/diff/1/?file=379598#file379598line31>
> >
> >     Include a note that this test class is not threadsafe.
> >     
> >     The default poms and build scripts don't run parallel unit tests. But I know
the build speed is something we care about, so we'll get there eventually. Best to have a
warning for future maintainers. How much detail to include is up to you.
> >     
> >     It won't work with JUnit 4.7+'s parallel, since they're in the same JVM:
> >     
> >     http://maven.apache.org/surefire/maven-surefire-plugin/examples/junit.html#Running_tests_in_parallel
> >     
> >     It will work with Surefire's fork and reuseForks=false, since that's a JVM per
class
> >     
> >     http://maven.apache.org/surefire/maven-surefire-plugin/examples/fork-options-and-parallel-execution.html#Forked_Test_Execution
> 
> Bill Havanki wrote:
>     Will do.
> 
> Bill Havanki wrote:
>     Another thought: we could start to introduce the JCIP annotations to indicate thread
safety (or lack of it) in a better way. I'll float the idea to the dev list.
> 
> Sean Busbey wrote:
>     Sure. Don't let the wider refactor that would be stop you from finishing this issue
though. :)
>     
>     I think starting to use JCIP annotations should be its own ticket.
> 
> John Vines wrote:
>     1.4.5 and 1.5.1 are bugfix releases, and I'm really only concerns about fixing the
ticket on hand. I'm really iffy to even qualify it as a something that should be fixed in
those releases as this really is an improvement, not a bug. But it seems useful and lightweight,
so fixing the ticket at hand is fine. But introducing a whole bunch of other things in 1.4.x
with it I'm going to have to vote against.
> 
> Sean Busbey wrote:
>     That's a major reason I want JCIP annotations in their own ticket. I presume Bill
was talking about using them primarily in the current major version, but all of this is discussion
unrelated to the task at hand.
>     
>     The current issue just needs a comment block so that 1.4, 1.5, and 1.6 have a suitable
warning.

My intention is not to try introducing JCIP with this ticket. I concur with Sean, it's its
own ticket.


- Bill


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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/15279/#review28290
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On Nov. 6, 2013, 2:02 p.m., Bill Havanki wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/15279/
> -----------------------------------------------------------
> 
> (Updated Nov. 6, 2013, 2:02 p.m.)
> 
> 
> Review request for accumulo.
> 
> 
> Bugs: ACCUMULO-1556
>     https://issues.apache.org/jira/browse/ACCUMULO-1556
> 
> 
> Repository: accumulo
> 
> 
> Description
> -------
> 
> The Initialize class now generates clearer error messages if an initialized instance
is discovered. The messages vary depending on whether instance.dfs.uri is used.
> 
> Note that to facilitate unit testing, the verification logic in Initialize.doInit() was
refactored into a checkInit() method.
> 
> 
> Diffs
> -----
> 
>   pom.xml 9ed2fdf1c7a1f8831667b27bfaa307fbe2467fe8 
>   src/server/pom.xml 6421bc69cda5116f9716d30adc3d510baa3bb7d6 
>   src/server/src/main/java/org/apache/accumulo/server/util/Initialize.java 51576fcc8ff8ffcd65a78bfeaaaf51036360a6bc

>   src/server/src/test/java/org/apache/accumulo/server/util/InitializeTest.java PRE-CREATION

> 
> Diff: https://reviews.apache.org/r/15279/diff/
> 
> 
> Testing
> -------
> 
> Ran initialization with patch changes on 1.4.3 cluster under CDH 4.3. Tested successful
initialization and correct emission of error messages when instance.dfs.uri was used and was
not used. Also, implemented unit tests for altered code.
> 
> 
> Thanks,
> 
> Bill Havanki
> 
>


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