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https://issues.apache.org/jira/browse/CASSANDRA-8358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14504083#comment-14504083
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Aleksey Yeschenko commented on CASSANDRA-8358:
----------------------------------------------

Force pushed another updated (and squashed) version to the same branch - 
https://github.com/iamaleksey/cassandra/commits/8358. It adds some more cleanup 
on top of Philip's, in particular some around SSTableLoader.Client 
implementations, but it's still far from clean - because of original code 
dirtiness.

Things that need fixing:
- NativeSSTableLoaderClient must support connecting over SSL. This is a 
regression - the original code did support this.
- NSSTLC TalbeMetadata to CFMetaData code is broken. I think we should, for 
now, do the ugly thing and reimplement what sstableloader was doing, and SELECT 
stuff from schema table manually, then do the equivalent of 
{{ThriftConversion.fromThriftCqlRow()}} call, now unused.

> Bundled tools shouldn't be using Thrift API
> -------------------------------------------
>
>                 Key: CASSANDRA-8358
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8358
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Aleksey Yeschenko
>            Assignee: Philip Thompson
>             Fix For: 3.0
>
>
> In 2.1, we switched cqlsh to the python-driver.
> In 3.0, we got rid of cassandra-cli.
> Yet there is still code that's using legacy Thrift API. We want to convert it 
> all to use the java-driver instead.
> 1. BulkLoader uses Thrift to query the schema tables. It should be using 
> java-driver metadata APIs directly instead.
> 2. o.a.c.hadoop.cql3.CqlRecordWriter is using Thrift
> 3. o.a.c.hadoop.ColumnFamilyRecordReader is using Thrift
> 4. o.a.c.hadoop.AbstractCassandraStorage is using Thrift
> 5. o.a.c.hadoop.pig.CqlStorage is using Thrift
> Some of the things listed above use Thrift to get the list of partition key 
> columns or clustering columns. Those should be converted to use the Metadata 
> API of the java-driver.
> Somewhat related to that, we also have badly ported code from Thrift in 
> o.a.c.hadoop.cql3.CqlRecordReader (see fetchKeys()) that manually fetches 
> columns from schema tables instead of properly using the driver's Metadata 
> API.
> We need all of it fixed. One exception, for now, is 
> o.a.c.hadoop.AbstractColumnFamilyInputFormat - it's using Thrift for its 
> describe_splits_ex() call that cannot be currently replaced by any 
> java-driver call (?).
> Once this is done, we can stop starting Thrift RPC port by default in 
> cassandra.yaml.



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