Re: Bigtable - Fetching multiple keys in one query

[Carlos ORyan]

Hi,

Thanks for the suggestion.  We definitely need more examples showing how to use the APIs in non-trivial cases.  I have created #1564 for this one.

On Fri, Nov 30, 2018 at 1:05 PM Bastien Duclaux <bastien...@nuwa.be> wrote:

Hello,

I think it would be useful to explain in the documentation that it’s possible to query multiple keys in a single Bigtable query ;

auto row_set=gcb::RowSet();

row_set.Append("red");

row_set.Append("black »);

…

…

for (auto const& row : table->ReadRows( move(row_set) , move(gcb::Filter::Latest(1))) )

{       

   auto const& cell = row.cells().front();

   cout<<"Reading "<<cell.value().size()<<" bytes for key "<<cell.row_key())<< endl;

}

I was not obvious, but it’s super useful, and much faster than to do N queries !

Thanks

--

Carlos O'Ryan

GCS Surface & Consumers Team

#include <cute.quote> // TODO(coryan@) actually pick a quote