On Tue, Jan 14, 2014 at 6:06 PM, Dickson, Matt MR < matt.dick...@defence.gov.au> wrote:
> *UNOFFICIAL* > Just for simplicity, this is a one of request for managment so I was > hoping to just scan via the shell and output to a file. > > If I need to do it via a mr job I can do it that way and would be keen to > hear any suggestions. > You could modify the following example in 1.4 to suit your needs. src/examples/simple/src/main/java/org/apache/accumulo/examples/simple/mapreduce/UniqueColumns.java > > ------------------------------ > *From:* David Medinets [mailto:david.medin...@gmail.com] > *Sent:* Wednesday, 15 January 2014 09:36 > *To:* accumulo-user > *Subject:* Re: List of unique qualifiers [SEC=UNOFFICIAL] > > Why the restriction to the shell environment? A nice map-reduce job > would be ideal for this task. > > > On Tue, Jan 14, 2014 at 5:30 PM, Dickson, Matt MR < > matt.dick...@defence.gov.au> wrote: > >> *UNOFFICIAL* >> Hi, >> >> I need to extract a list of unique qualifier values on a table from the >> Accumulo shell. For every column there is a column family that identifies >> a specific qualifer, eg 'cityofbirth'. I would like to get a unique list >> of all cities that are a listed in the qualifier against 'cityofbirth' for >> all rows. >> >> eg, If I had a table with >> >> Rowid Family Qual >> 123 cityofbirth LosAngeles >> 133 cityofbirth Brisbane >> 222 cityofbirth London >> 124 cityofbirth London >> 124 cityofbirth London >> >> I want a list that is just; >> LosAngeles >> London >> Brisbane >> >> Any suggestions on how to achieve this from the shell would great. >> >> Thanks in advance. >> Matt >> >> >> >> > >
