Hi all Created Jira Link https://issues.apache.org/jira/browse/LENS-561
Regards Vikas Singh On Mon, May 18, 2015 at 12:44 PM, Vikas Singh (Tech - VS) < [email protected]> wrote: > Hi Amareshwari > > Thanks for the reply, I will create the Jira, Also I was wondering when > the above changes will be merged/rebased to the main codebase. > > Regards > Vikas Singh > > On Fri, May 15, 2015 at 9:18 AM, amareshwarisr . <[email protected]> > wrote: > >> Adding rewriter in HiveDriver should not be an issue. Will be different >> jira than LENS-24. >> >> Thanks >> Amareshwari >> >> On Wed, May 13, 2015 at 5:43 PM, Vikas Singh (Tech - VS) < >> [email protected]> wrote: >> >> > Hi Amareshwari >> > >> > Thanks for the reply. >> > Just to set the context, According to the above patch the rewrite flow >> will >> > be- >> > >> > query --> rewriteToCubeQL --> rewriteToHQL >> > Here rewriteToHQL does the cube rewrites which are similar to >> previous >> > functionality. So the hook is added before any Cube rewrite is happening >> > (before any actual fact table, storage table, candidate table resolution >> > happens). In our use case we need rewrite to happen after all these >> > resolutions happen. So having a rewriter at HQL Driver level, analogous >> to >> > JDBC Driver will give flexibility to do rewrite at the CubeLevel as >> well as >> > at the driver level (based on actual storage table, candidate tables). >> > >> > So I propose adding a rewriter to HiveDriver as well. Please share >> your >> > thoughts. >> > >> > Regards >> > Vikas Singh >> > >> > On Thu, Apr 30, 2015 at 11:30 AM, amareshwarisr . < >> [email protected]> >> > wrote: >> > >> > > Hello Vikas, >> > > >> > > Sorry missed replying this mail. >> > > >> > > From the requirement put up, i see query needs to be rewritten with >> where >> > > clause appended. For plugging in any new rewriter, there is open issue >> > > LENS-24 (https://issues.apache.org/jira/browse/LENS-24) and the >> changes >> > > put >> > > up at https://reviews.apache.org/r/29110/. The changes need a rebase >> > with >> > > master. One the pluggable rewriter is available, plugging in >> AuthRewriter >> > > should be simple. >> > > >> > > Thanks >> > > Amareshwari >> > > >> > > >> > > On Thu, Apr 23, 2015 at 11:16 AM, Vikas Singh (Tech - VS) < >> > > [email protected]> wrote: >> > > >> > > > Problem Statement: Implementing Authorisation filter in lens. >> > > > >> > > > The way we do Row level authorisation is - >> > > > For row level security, we have auth_db which stores map of >> significant >> > > > columns(In which we are interested to do row level security) and >> > allowed >> > > > values per user. During run time we get all the Facts associated in >> > > query, >> > > > get their column set and do a intersection with set returned from >> > > auth_db. >> > > > Resulting set is appended as "IN Clause" or column!=value to the >> query >> > > > accordingly. >> > > > >> > > > My guess is the best place to do it will be driver ReWriter >> level >> > as >> > > it >> > > > will handle CubeQl and bypassed HQL seamlessly. I was wondering if >> > there >> > > is >> > > > any better place to do this, i.e. any hooks available. >> > > > >> > > > Regards >> > > > Vikas Singh >> > > > >> > > >> > >> > >
