StAck...
LOL...
The idea is to automate the use of the export function to be run within a cron
job.
(And yes, there are some use cases where we want to actually back data up.. ;-)
I originally wanted to do this in ksh (yeah I'm that old. :-) but ended up
looking at Python because I couldn't figure out how to create the time stamp in
ksh.
As to documentation... just something which tells us what is meant by start
time and end time. (Like that its in ms from the epoch instead of making us
assume that.)
[And you know what they say about assumptions.]
As to converting the date / time to a timestamp...
In Python:
You build up a date object then you can do the following:
mytime = datetime.datetime(year,month,day,hour,min,sec) *where hour,min,sec are
optional
mytimestamp = time.mktime(mytime.timetuple())
I'm in the process of testing this... I think it will work.
Thx
-Mike
Date: Fri, 6 Aug 2010 11:28:57 -0700
Subject: Re: Using HBase's export/import function...
From: st...@duboce.net
To: user@hbase.apache.org
On Fri, Aug 6, 2010 at 11:13 AM, Michael Segel
michael_se...@hotmail.com wrote:
2) There isn't any documentation, I'm assuming that the start time and end
times are timestamps (long values representing the number of miliseconds
since the epoch which are what is being stored in hbase).
Yes.
What kinda doc. do you need? The javadoc on the class is minimal:
http://hbase.apache.org/docs/r0.20.6/api/org/apache/hadoop/hbase/mapreduce/Export.html
3) Is there an easy way to convert a date in to a time stamp? (not in ksh,
and I'm struggling on finding a way to reverse the datetime object in
python.
On the end of this page it shows you how to do date convertions inside
in the hbase shell: http://wiki.apache.org/hadoop/Hbase/Shell
St.Ack
Thx
-Mike
