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ql/src/java/org/apache/hadoop/hive/ql/io/parquet/vector/ParquetDataColumnReaderFactory.java
Lines 114 (patched)
<https://reviews.apache.org/r/65478/#comment276743>

    nit, It should probably say "Implementation is consistent with .." Same 
with TypesFromInt64PageReader and TypesFromFloatPageReader below. Thanks



ql/src/test/queries/clientpositive/schema_evol_par_vec_table.q
Lines 9 (patched)
<https://reviews.apache.org/r/65478/#comment276745>

    Does this test work when dictionary encoding is both enabled/disabled? You 
can change parquet dictionary encoding by setting table property 
"parquet.enable.dictionary"="true" or "false". Can you please modify the test 
to include that as well?



ql/src/test/queries/clientpositive/schema_evol_par_vec_table.q
Lines 49 (patched)
<https://reviews.apache.org/r/65478/#comment276742>

    I think this comment can be removed now so that there is no confusion in 
the future.



ql/src/test/queries/clientpositive/schema_evol_par_vec_table.q
Lines 71 (patched)
<https://reviews.apache.org/r/65478/#comment276744>

    Can you please test using timestamps as well. Specifically, the following 
should work.
    
    drop table test_alter2;
    create table test_alter2 (ts timestamp) stored as parquet;
    insert into test_alter2 values ('2018-01-01 13:14:15.123456'), ('2018-01-02 
14:15:16.123456'), ('2018-01-03 16:17:18.123456');
    select * from test_alter2;
    alter table test_alter2 replace columns (ts string);
    select * from test_alter2;
    
    drop table test_alter2;
    create table test_alter2 (ts timestamp) stored as parquet;
    insert into test_alter2 values ('2018-01-01 13:14:15.123456'), ('2018-01-02 
14:15:16.123456'), ('2018-01-03 16:17:18.123456');
    select * from test_alter2;
    alter table test_alter2 replace columns (ts varchar(19));
    -- this should truncate the microseconds
    select * from test_alter2;
    
    drop table test_alter2;
    create table test_alter2 (ts timestamp) stored as parquet;
    insert into test_alter2 values ('2018-01-01 13:14:15.123456'), ('2018-01-02 
14:15:16.123456'), ('2018-01-03 16:17:18.123456');
    select * from test_alter2;
    alter table test_alter2 replace columns (ts char(25);
    select * from test_alter2;


- Vihang Karajgaonkar


On Feb. 5, 2018, 8:46 a.m., cheng xu wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/65478/
> -----------------------------------------------------------
> 
> (Updated Feb. 5, 2018, 8:46 a.m.)
> 
> 
> Review request for hive.
> 
> 
> Repository: hive-git
> 
> 
> Description
> -------
> 
> VectorizedParquetReader throws an exception when trying to reading from a 
> parquet table on which new columns are added.
> 
> 
> Diffs
> -----
> 
>   
> ql/src/java/org/apache/hadoop/hive/ql/io/parquet/vector/BaseVectorizedColumnReader.java
>  907a9b8 
>   
> ql/src/java/org/apache/hadoop/hive/ql/io/parquet/vector/ParquetDataColumnReaderFactory.java
>  PRE-CREATION 
>   
> ql/src/java/org/apache/hadoop/hive/ql/io/parquet/vector/VectorizedDummyColumnReader.java
>  PRE-CREATION 
>   
> ql/src/java/org/apache/hadoop/hive/ql/io/parquet/vector/VectorizedParquetRecordReader.java
>  08ac57b 
>   
> ql/src/test/org/apache/hadoop/hive/ql/io/parquet/TestVectorizedColumnReader.java
>  9e414dc 
>   
> ql/src/test/org/apache/hadoop/hive/ql/io/parquet/VectorizedColumnReaderTestBase.java
>  5d3ebd6 
>   ql/src/test/queries/clientpositive/schema_evol_par_vec_table.q PRE-CREATION 
>   ql/src/test/results/clientpositive/schema_evol_par_vec_table.q.out 
> PRE-CREATION 
> 
> 
> Diff: https://reviews.apache.org/r/65478/diff/2/
> 
> 
> Testing
> -------
> 
> Newly added UT passed and qtest passed locally.
> 
> 
> Thanks,
> 
> cheng xu
> 
>

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