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[jira] [Created] (HIVE-19534) Allow implementations to access member variables of AbstractRecordWriter

Matt Burgess created HIVE-19534:

             Summary: Allow implementations to access member variables of AbstractRecordWriter
                 Key: HIVE-19534
                 URL: https://issues.apache.org/jira/browse/HIVE-19534
             Project: Hive
          Issue Type: Improvement
          Components: Streaming
            Reporter: Matt Burgess

The AbstractRecordWriter class in the Hive 3 Streaming API (package org.apache.hive.streaming) provides common functionality for processing incoming records (each as a byte[]) where subclasses often need only to implement the encode() and createSerde() methods and let AbstractRecordWriter handle the rest.

However for some custom RecordWriters, the records may not be available as a byte array, and thus the custom RecordWriter may need to handle the writes and the "paperwork" such as connection stats updates (number of records written, e.g.), basically the same code that is in the write(long, byte[]) method. To do that, the subclass will need access to the member variables of AbstractRecordWriter, which are currently private. The same likely holds for the private methods.

This Jira proposes to make the member variables and methods of AbstractRecordWriter protected (or package-protected) as prudent. 

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