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https://issues.apache.org/jira/browse/PIG-1781?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Brauwerman updated PIG-1781:
------------------------------------

    Attachment: PIG-1781.2.patch

Updated patch, created at trunk/contrib/piggybank.
'ant test' ran to BUILD SUCCESSFUL

New Changes in this patch:
* Re-indented all touched files to use 4-spaces instead of tabs.
* Removed some stray System.out.println lines in some tests
* Changed some assertTrue(foo.equals(bar)) to assertEquals(foo, bar) (for 
clearer output when tests fail.)

Changes between repo and this patch, that I forgot to mention earlier:
* Changed some assertTrue(foo.equals(bar)) to assertEquals(foo, bar) (for 
clearer output when tests fail.)

Concerns:
* piggybank does not have a 'doc' or 'test-patch' target, so I could not run 
those. Particularly, I couldn't run the "hudson auto-review" locally.
* I'm not 100% on the interaction between core pig and piggybank in the build 
files, so I hope I did not break or overlook anything in that interaction.

I got Eclipse set up to develop on Pig, which is much nicer than Xcode. Yay.

OK, I hope this is helpful! It would be swell if this change got merged the 0.8 
branch also (if an 0.8.1 release is planned), but I'm in no personal rush, 
since I have a local build that works for my project.

Oh, and if this behavior change is undesired for some reason, no hard feelings. 
I don't know if anyone else is using Piggybank for bucketing-by-day analysis in 
non-UTC timezones, but I am, and so the truncate package is quite handy for me; 
I just need a version that works on US/Pacific-timezone dateTimes.




> Piggybank: ISOToDay disregards timezone (should use ISODateTimeFormat. 
> instead of DateTime to parse)
> ----------------------------------------------------------------------------------------------------
>
>                 Key: PIG-1781
>                 URL: https://issues.apache.org/jira/browse/PIG-1781
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: 0.8.0
>            Reporter: Michael Brauwerman
>         Attachments: PIG-1781.2.patch, PIG-1781.patch, svn.diff
>
>
> (Apologies if this is the wrong place to file Piggybank bugs)
> Bug in 
> http://svn.apache.org/viewvc/pig/trunk/contrib/piggybank/java/src/main/java/org/apache/pig/piggybank/evaluation/datetime/truncate/ISOToDay.java?view=markup
> and other 
> http://svn.apache.org/viewvc/pig/trunk/contrib/piggybank/java/src/main/java/org/apache/pig/piggybank/evaluation/datetime/truncate/
>  classes that copy-paste the same code.
> These classes parse dates like so:
>       DateTimeZone.setDefault(DateTimeZone.UTC);      
>       DateTime dt = new DateTime((String)input.get(0).toString()); 
> This has two problems:
> (1) It messes up JVM static state by changing the DateTimeZone default time 
> zone.
> (2) It ignore timezone information in the input string, so times like 
> "2009-12-09T23:59:59-0800" get truncated to "2009-12-10T00:00:00Z", which is 
> the wrong day of year. 
> Instead, they should use something like this, which respects the input 
> timezone and does not modify any global state:
>   DateTime dt 
> ISODateTimeFormat.dateTime().withOffsetParsed().parseDateTime(isoDateString);
> I have not provided a patch, because I'm not really set up to hack on 
> Piggybank locally.
> As a workaround, I am copy-pasting the classes into my own packages, and 
> making the desired change.

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