[jira] [Created] (HIVE-9978) OrcColumnVectorProducer should handle reading isPresent columns only

["Gopal V (JIRA)" <ji...@apache.org>]

Gopal V created HIVE-9978:
-----------------------------

             Summary: OrcColumnVectorProducer should handle reading isPresent columns only
                 Key: HIVE-9978
                 URL: https://issues.apache.org/jira/browse/HIVE-9978
             Project: Hive
          Issue Type: Sub-task
          Components: File Formats
    Affects Versions: llap
            Reporter: Gopal V


LlapInputFormat does not understand the difference between empty columns list and null columns list.

The empty columns list indicates no columns read except the root struct isPresent column, while the null columns list indicates that all columns are being read.

{code}
select count(1) from store_sales join date_dim on ss_sold_date_sk = d_date_sk where d_date = '1998-01-01';
...
Caused by: java.lang.NullPointerException
        at org.apache.hadoop.hive.llap.io.decode.OrcColumnVectorProducer.createReadPipeline(OrcColumnVectorProducer.java:72)
        at org.apache.hadoop.hive.llap.io.api.impl.LlapInputFormat$LlapRecordReader.startRead(LlapInputFormat.java:181)
        at org.apache.hadoop.hive.llap.io.api.impl.LlapInputFormat$LlapRecordReader.next(LlapInputFormat.java:140)
        at org.apache.hadoop.hive.llap.io.api.impl.LlapInputFormat$LlapRecordReader.next(LlapInputFormat.java:99)
        at org.apache.hadoop.hive.ql.io.HiveContextAwareRecordReader.doNext(HiveContextAwareRecordReader.java:350)
        ... 22 more
{code}



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