Oh and as luck would have it, it was made for the 0.4-0.5 release. On Mon, Jan 9, 2012 at 1:13 PM, Dmitriy Ryaboy <[email protected]> wrote:
> I had a patch that introduced shims, which included shims to make Pig work > with 19. It's woefully out of date at this point, but you can at least use > it as a starting point: https://issues.apache.org/jira/browse/PIG-924 > > > On Mon, Jan 9, 2012 at 11:23 AM, Daniel Dai <[email protected]> wrote: > >> There are some API incompatible changes between 0.19 and 0.20. You will >> need to change current Pig code in order to compile/run against 0.19. But >> the cost of downgrade hadoop should be much lower than write a new >> backend. >> You can check PIG-660 (in which we upgrade hadoop 18 to 20) to get some >> idea. >> >> Daniel >> >> On Mon, Jan 9, 2012 at 2:01 AM, devdoer bird <[email protected]> wrote: >> >> > If possible I want to use the official pig distribution, but the >> company's >> > hadoop (from hadoop 0.19) backend has changed a lot of api from the >> > official one which I can't get the documentaion. >> > >> > I tried to fix the imcompatial problem by making pig 0.9.1 work with >> > official hadoop 0.19 ,then work with my company's private hadoop >> > distribution . But I don't where to begin. >> > >> > Any help will be welcome. >> > >> > 2012/1/9 Daniel Dai <[email protected]> >> > >> > > What error did you see when you use official Pig distribution? It's >> > > non-trivial to write a backend even if possible (Especially for 0.5, >> it >> > > would be hard to get help from the community) >> > > >> > > On Mon, Jan 9, 2012 at 12:16 AM, devdoer bird <[email protected]> >> > wrote: >> > > >> > > > So I think Streaming backend may be a good solution for this >> situation. >> > > > >> > > > 2012/1/9 devdoer bird <[email protected]> >> > > > >> > > > > The reason I decide use Streaming as backend is that In my >> company >> > the >> > > > > hadoop has been modified so it might not be compatible with the >> > > official >> > > > > hadoop distribution. And I can't make the pig run on our private >> > > hadoop >> > > > > distribution. >> > > > > >> > > > > >> > > > > 2012/1/9 Daniel Dai <[email protected]> >> > > > > >> > > > >> Pig do have a abstraction layer in execution engine. But that is >> > > mostly >> > > > a >> > > > >> legacy of early versions. In recent development, we never keep >> > > platform >> > > > >> neutral in mind so I don't know how reliable this interface is. >> Can >> > > you >> > > > >> elaborate your idea so we may find a better solution? >> > > > >> >> > > > >> Daniel >> > > > >> >> > > > >> On Sun, Jan 8, 2012 at 7:50 PM, devdoer bird <[email protected] >> > >> > > > wrote: >> > > > >> >> > > > >> > HI: >> > > > >> > >> > > > >> > I want to implement a new pig backend . Can I replache the >> hadoop >> > > > >> backend >> > > > >> > with a hadoop--streaming only backend? >> > > > >> > >> > > > >> > I decide to use streaming to implement backend.storage and >> backend >> > > > >> > .executionengine interface , but I want to know whether it's >> a >> > > right >> > > > >> way >> > > > >> > to do so. >> > > > >> > >> > > > >> > Thanks. >> > > > >> > >> > > > >> >> > > > > >> > > > > >> > > > >> > > >> > >> > >
