Thanks, I mean how do you invoke it directly in grunt> from Pig? I keep messing it up for the last 30 minutes. Should I check the settings on my pacemaker, I feel like Fabio on NyQuil messing with this.
On Wed, May 23, 2012 at 10:19 PM, Subir S <[email protected]> wrote: > Hope this helps -> http://www.javapractices.com/topic/TopicAction.do?Id=56 > > and this -> > > http://docs.oracle.com/javase/1.5.0/docs/api/java/util/UUID.html#randomUUID%28%29 > > Thanks > > > > On Thu, May 24, 2012 at 10:42 AM, Russell Jurney > <[email protected]>wrote: > > > How do you invoke java.util.UUID.randomUUID? There is no invoker that > > doesn't take an arg? > > > > On Sun, May 20, 2012 at 6:26 PM, Rajesh Balamohan < > > [email protected]> wrote: > > > > > I dont think so. However, its a single line java command. You can > create > > > customUDF for this and use in your code. > > > > > > java.util.UUID.randomUUID(); > > > > > > ~Rajesh.B > > > > > > On Sun, May 20, 2012 at 8:15 AM, DIPESH KUMAR SINGH > > > <[email protected]>wrote: > > > > > > > Thanks Rajesh. > > > > > > > > Is GUID a built in UDF? > > > > > > > > > > > > -- > > > > Dipesh > > > > > > > > On Sun, May 20, 2012 at 8:06 AM, Rajesh Balamohan < > > > > [email protected]> wrote: > > > > > > > > > If you do not bother about sequence number and the intention is to > > > create > > > > > just unique key, you can just use GUID which doesn't require any > > > > > synchronization at all (all mappers can run in parallel). > > > > > > > > > > The approached I suggested in earlier mail comes into picture > mainly > > > for > > > > > sequence number. > > > > > > > > > > ~Rajesh.B > > > > > > > > > > On Sun, May 20, 2012 at 8:02 AM, Rajesh Balamohan < > > > > > [email protected]> wrote: > > > > > > > > > > > Pig doesn't have that facility yet. Moreover, its not very > > efficient > > > to > > > > > do > > > > > > this in PIG/MR as it requires synchronization. > > > > > > > > > > > > However, if this is unavoidable situation for you, following > things > > > can > > > > > be > > > > > > considered > > > > > > > > > > > > 1. Maintaining the seq number details in zookeeper > > > > > > 2. Having a simple structure in HBase table (seqNumber --> > Value). > > > You > > > > > can > > > > > > get a bucket of values (ex: 1000-2000) from this and use it in > your > > > > UDF. > > > > > > When the range depletes, you have to query/update HBase table > (ex: > > > > > > 3000-4000). There are corner cases which needs to be handled. > > > > > > > > > > > > > > > > > > ~Rajesh.B > > > > > > > > > > > > > > > > > > On Sat, May 19, 2012 at 12:04 AM, DIPESH KUMAR SINGH < > > > > > > [email protected]> wrote: > > > > > > > > > > > >> Sorry, if my point was not clear. > > > > > >> > > > > > >> I wish to create a sequence on a pig relation. > > > > > >> > > > > > >> Say For example i have a relation with data: > > > > > >> (John, A-1) > > > > > >> (Jack, B-2) > > > > > >> (Jim, C-1) > > > > > >> > > > > > >> I want to create sequence i.e to add one more column to the > > > relation, > > > > > like > > > > > >> a counter and keep on increasing the count for each record read. > > > > > Expected > > > > > >> output should be something like this: > > > > > >> > > > > > >> (If 200 is the start sequence. ) > > > > > >> (John, A-1, 201) > > > > > >> (Jack, B-2, 202) > > > > > >> (Jim, C-1, 203) > > > > > >> > > > > > >> Could you please suggest to proceed on this? > > > > > >> > > > > > >> Thanks, > > > > > >> Dipesh > > > > > >> > > > > > >> On Fri, May 18, 2012 at 6:50 AM, Thejas Nair < > > > [email protected]> > > > > > >> wrote: > > > > > >> > > > > > >> > What do you mean by 'rdbms like sequence' ? > > > > > >> > Thanks, > > > > > >> > Thejas > > > > > >> > > > > > > >> > > > > > > >> > On 5/16/12 10:41 AM, DIPESH KUMAR SINGH wrote: > > > > > >> > > > > > > >> >> I want to create a rdbms like sequence on a Pig relation. > > > > > >> >> > > > > > >> >> Is there any existing UDF which could do this? > > > > > >> >> > > > > > >> >> I am bit new to pig, Kindly suggest how to proceed? > > > > > >> >> > > > > > >> >> > > > > > >> >> Thanks& Regards, > > > > > >> >> > > > > > >> > > > > > > >> > > > > > > >> > > > > > >> > > > > > >> -- > > > > > >> Dipesh Kr. Singh > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > > ~Rajesh.B > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > ~Rajesh.B > > > > > > > > > > > > > > > > > > > > > -- > > > > Dipesh Kr. Singh > > > > > > > > > > > > > > > > -- > > > ~Rajesh.B > > > > > > > > > > > -- > > Russell Jurney twitter.com/rjurney [email protected] > > datasyndrome.com > > > -- Russell Jurney twitter.com/rjurney [email protected] datasyndrome.com
