wangyum opened a new pull request #25378: [SPARK-28644][SQL] Port HIVE-10646: 
ColumnValue does not handle NULL_TYPE
URL: https://github.com/apache/spark/pull/25378
 
 
   ## What changes were proposed in this pull request?
   
   This PR port [HIVE-10646](https://issues.apache.org/jira/browse/HIVE-10646) 
to fix Hive 0.12's JDBC client can not handle `NULL_TYPE`:
   ```sql
   Connected to: Hive (version 3.0.0-SNAPSHOT)
   Driver: Hive (version 0.12.0)
   Transaction isolation: TRANSACTION_REPEATABLE_READ
   Beeline version 0.12.0 by Apache Hive
   0: jdbc:hive2://localhost:10000> select null;
   org.apache.thrift.transport.TTransportException
        at 
org.apache.thrift.transport.TIOStreamTransport.read(TIOStreamTransport.java:132)
        at org.apache.thrift.transport.TTransport.readAll(TTransport.java:84)
        at 
org.apache.thrift.transport.TSaslTransport.readLength(TSaslTransport.java:346)
        at 
org.apache.thrift.transport.TSaslTransport.readFrame(TSaslTransport.java:423)
        at 
org.apache.thrift.transport.TSaslTransport.read(TSaslTransport.java:405)
   ```
   
   Server log:
   ```
   19/08/07 09:34:07 ERROR TThreadPoolServer: Error occurred during processing 
of message.
   java.lang.NullPointerException
        at 
org.apache.hive.service.cli.thrift.TRow$TRowStandardScheme.write(TRow.java:388)
        at 
org.apache.hive.service.cli.thrift.TRow$TRowStandardScheme.write(TRow.java:338)
        at org.apache.hive.service.cli.thrift.TRow.write(TRow.java:288)
        at 
org.apache.hive.service.cli.thrift.TRowSet$TRowSetStandardScheme.write(TRowSet.java:605)
        at 
org.apache.hive.service.cli.thrift.TRowSet$TRowSetStandardScheme.write(TRowSet.java:525)
        at org.apache.hive.service.cli.thrift.TRowSet.write(TRowSet.java:455)
        at 
org.apache.hive.service.cli.thrift.TFetchResultsResp$TFetchResultsRespStandardScheme.write(TFetchResultsResp.java:550)
        at 
org.apache.hive.service.cli.thrift.TFetchResultsResp$TFetchResultsRespStandardScheme.write(TFetchResultsResp.java:486)
        at 
org.apache.hive.service.cli.thrift.TFetchResultsResp.write(TFetchResultsResp.java:412)
        at 
org.apache.hive.service.cli.thrift.TCLIService$FetchResults_result$FetchResults_resultStandardScheme.write(TCLIService.java:13192)
        at 
org.apache.hive.service.cli.thrift.TCLIService$FetchResults_result$FetchResults_resultStandardScheme.write(TCLIService.java:13156)
        at 
org.apache.hive.service.cli.thrift.TCLIService$FetchResults_result.write(TCLIService.java:13107)
        at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:58)
        at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
        at 
org.apache.hive.service.auth.TSetIpAddressProcessor.process(TSetIpAddressProcessor.java:53)
        at 
org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:310)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:819)
   ```
   
   
   ## How was this patch tested?
   
   unit tests
   

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