[jira] [Created] (HIVE-10598) Vectorization borks when column is added to table.

["Mithun Radhakrishnan (JIRA)" <ji...@apache.org>]

Mithun Radhakrishnan created HIVE-10598:
-------------------------------------------

             Summary: Vectorization borks when column is added to table.
                 Key: HIVE-10598
                 URL: https://issues.apache.org/jira/browse/HIVE-10598
             Project: Hive
          Issue Type: Bug
          Components: Vectorization
            Reporter: Mithun Radhakrishnan
            Assignee: Mithun Radhakrishnan


Consider the following table definition:
{code:sql}
create table foobar ( foo string, bar string ) partitioned by (dt string) stored as orc;
alter table foobar add partition( dt='20150101' ) ;
{code}
Say the partition has the following data:
{noformat}
1	one	20150101
2	two	20150101
3	three	20150101
{noformat}
If a new column is added to the table-schema (and the partition continues to have the old schema), vectorized read from the old partitions fail thus:
{code:sql}
alter table foobar add columns( goo string );
select count(1) from foobar;
{code}

{code:title=stacktrace}
java.lang.Exception: java.lang.RuntimeException: Error creating a batch
	at org.apache.hadoop.mapred.LocalJobRunner$Job.runTasks(LocalJobRunner.java:462)
	at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:522)
Caused by: java.lang.RuntimeException: Error creating a batch
	at org.apache.hadoop.hive.ql.io.orc.VectorizedOrcInputFormat$VectorizedOrcRecordReader.createValue(VectorizedOrcInputFormat.java:114)
	at org.apache.hadoop.hive.ql.io.orc.VectorizedOrcInputFormat$VectorizedOrcRecordReader.createValue(VectorizedOrcInputFormat.java:52)
	at org.apache.hadoop.hive.ql.io.CombineHiveRecordReader.createValue(CombineHiveRecordReader.java:84)
	at org.apache.hadoop.hive.ql.io.CombineHiveRecordReader.createValue(CombineHiveRecordReader.java:42)
	at org.apache.hadoop.hive.shims.HadoopShimsSecure$CombineFileRecordReader.createValue(HadoopShimsSecure.java:156)
	at org.apache.hadoop.mapred.MapTask$TrackedRecordReader.createValue(MapTask.java:180)
	at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
	at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:450)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)
	at org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:243)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:744)
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: No type entry found for column 3 in map {4=Long}
	at org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatchCtx.addScratchColumnsToBatch(VectorizedRowBatchCtx.java:632)
	at org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatchCtx.createVectorizedRowBatch(VectorizedRowBatchCtx.java:343)
	at org.apache.hadoop.hive.ql.io.orc.VectorizedOrcInputFormat$VectorizedOrcRecordReader.createValue(VectorizedOrcInputFormat.java:112)
	... 14 more
{code}



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