Changing your code to wrap org.apache.cassandra.hadoop.cql3.CqlRecordReader is probably easier than trying to bring the old thrift based record reader into the 3.0 world, but I don't have any concrete code examples.
-- Jeff Jirsa > On May 2, 2017, at 6:02 PM, kedar mhaswade <kedar.mhasw...@gmail.com> wrote: > > Hello Cassandra Devs, > > See https://issues.apache.org/jira/browse/CASSANDRA-10996. This JIRA tells us > the schema changes between C*2 and C*3. Sylvain Lebresne suggests that one > should use the KeyspaceMetadata and related classes from the DataStax driver > instead of running queries against the internal schema keyspaces which have > also moved. > > My problem is related to CASSANDRA-10996, although unlike the reporter of > that report, I am not doing a query like that. It's a Cassandra 2.2 class > itself that does a similar query for me. This class is > org.apache.cassandra.hadoop.ColumnFamilyRecordReader which is used as-is (via > a wrapper) in one of the projects I am working on (JanusGraph). Since this > class is not found on Cassandra trunk, there must be something that replaces > its functionality (hopefully a drop-in replacement). And the way it fails > JanusGraph is documented in this bug: > https://github.com/JanusGraph/janusgraph/issues/172. > > I have two questions in this regard: > 1- Is there a replacement for CFRR? > 2- If not, can someone provide a way to replace ColumnFamilyRecordReader > functionality, hopefully with some example code? I am thinking that we could > wrap org.apache.cassandra.hadoop.cql3.CqlRecordReader instead of CFRR, but I > need a bit more context before I embark on that adventure. > > Thanks and Best Regards, > Kedar > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org > For additional commands, e-mail: dev-h...@cassandra.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org For additional commands, e-mail: dev-h...@cassandra.apache.org
