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From "John Vines (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-776) TimestampFilter should serialize start and end as longs in the IteratorSetting
Date Mon, 05 Nov 2012 21:28:13 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13490941#comment-13490941
] 

John Vines commented on ACCUMULO-776:
-------------------------------------

I don't think it's that painful. Looking at the removed lines of the patch, it looks like
the formatted date string was stored, which included the time zone info. If we just make the
new system a Stringified long, with the assumption that everything is GMT (as enforced by
the code), then we can handle backward compatibility for any entires that have non-digit characters
in it.

But yes, I think you bring up a larger question of what date 253402300800001 is supposed to
be. That's either microsecond based time or it's past 10,000 AD. While I have faith in our
software, I'm not sure if humanity will be around that long...
                
> TimestampFilter should serialize start and end as longs in the IteratorSetting
> ------------------------------------------------------------------------------
>
>                 Key: ACCUMULO-776
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-776
>             Project: Accumulo
>          Issue Type: Bug
>            Reporter: Marcio Silva
>            Assignee: Billie Rinaldi
>            Priority: Minor
>         Attachments: ACCUMULO-776.patch
>
>
> Although the TimestampFilter supports using longs to set the start or end timestamp,
it formats them as strings using SimpleDateFormat when storing or retrieving them in the IteratorSetting.
> This results in exceptions when the timestamps being used aren't able to be formatted
as _yyyyMMddHHmmssz_. For example, try {{setEnd(253402300800001,true)}}
> Instead, {{setStart()}} and {{setEnd()}} could just as easily use {{String.valueOf(long
i)}} to store the values, and {{init()}} could retrieve them using {{Long.valueOf(String s)}}.
 

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