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From "Vitalii Diravka (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (DRILL-4996) Parquet Date auto-correction is not working in auto-partitioned parquet files generated by drill-1.6
Date Thu, 08 Dec 2016 18:04:58 GMT

    [ https://issues.apache.org/jira/browse/DRILL-4996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15645729#comment-15645729
] 

Vitalii Diravka edited comment on DRILL-4996 at 12/8/16 6:04 PM:
-----------------------------------------------------------------

Right. Moreover drill-1.6.0 (which generated that file) will show incorrect date values too.

Cause before DRILL-4203 fix drill could not read any correct date values in parquet files.

To see are date values correct, you can use parquet tools.
{code}
vitalii@vitalii-pc:~/parquet-tools/parquet-mr/parquet-tools/target$ java -jar parquet-tools-1.6.0rc3-SNAPSHOT.jar
meta /home/vitalii/Downloads/1.6/0_0_1.parquet
file:             file:/home/vitalii/Downloads/1.6/0_0_1.parquet 
creator:          parquet-mr version 1.8.1-drill-r0 (build 6b605a4ea05b66e1a6bf843353abcb4834a4ced8)

extra:            drill.version = 1.6.0 
file schema:      root 
--------------------------------------------------------------------------------
i_rec_start_date: OPTIONAL INT32 O:DATE R:0 D:1
i_rec_end_date:   OPTIONAL INT32 O:DATE R:0 D:1
...
vitalii@vitalii-pc:~/parquet-tools/parquet-mr/parquet-tools/target$ java -jar parquet-tools-1.6.0rc3-SNAPSHOT.jar
cat /home/vitalii/Downloads/1.6/0_0_1.parquet
....
i_rec_start_date = 10161
i_rec_end_date = 10891
.....
{code}
Incorrect values are more than 4881176. 


was (Author: vitalii):
Right. Moreover drill-1.6.0 (which generated that file) will show incorrect date values too.

Cause before DRILL-4203 fix drill could not read any correct date values in parquet files.

To see are date values correct, you can use parquet tools.
{code}
vitalii@vitalii-pc:~/parquet-tools/parquet-mr/parquet-tools/target$ java -jar parquet-tools-1.6.0rc3-SNAPSHOT.jar
meta /home/vitalii/Downloads/1.6/0_0_1.parquet
file:             file:/home/vitalii/Downloads/1.6/0_0_1.parquet 
creator:          parquet-mr version 1.8.1-drill-r0 (build 6b605a4ea05b66e1a6bf843353abcb4834a4ced8)

extra:            drill.version = 1.6.0 
file schema:      root 
--------------------------------------------------------------------------------
i_rec_start_date: OPTIONAL INT32 O:DATE R:0 D:1
i_rec_end_date:   OPTIONAL INT32 O:DATE R:0 D:1
...
vitalii@vitalii-pc:~/parquet-tools/parquet-mr/parquet-tools/target$ java -jar parquet-tools-1.6.0rc3-SNAPSHOT.jar
cat /home/vitalii/Downloads/1.6/0_0_1.parquet
....
i_rec_start_date = 10161
i_rec_end_date = 10891
.....
{code}
Incorrect values are more than 4881176. 

> Parquet Date auto-correction is not working in auto-partitioned parquet files generated
by drill-1.6
> ----------------------------------------------------------------------------------------------------
>
>                 Key: DRILL-4996
>                 URL: https://issues.apache.org/jira/browse/DRILL-4996
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Storage - Parquet
>            Reporter: Rahul Challapalli
>            Assignee: Vitalii Diravka
>            Priority: Critical
>         Attachments: item.tgz
>
>
> git.commit.id.abbrev=4ee1d4c
> Below are the steps I followed to generate the data :
> {code}
> 1. Generate a parquet file with date column using hive1.2
> 2. Use drill 1.6 to create auto-partitioned parquet files partitioned on the date column
> {code}
> Now the below query returns wrong results :
> {code}
> select i_rec_start_date, i_size from dfs.`/drill/testdata/parquet_date/auto_partition/item_multipart_autorefresh`
 group by i_rec_start_date, i_size;
> +-------------------+--------------+
> | i_rec_start_date  |    i_size    |
> +-------------------+--------------+
> | null              | large        |
> | 366-11-08        | extra large  |
> | 366-11-08        | medium       |
> | null              | medium       |
> | 366-11-08        | petite       |
> | 364-11-07        | medium       |
> | null              | petite       |
> | 365-11-07        | medium       |
> | 368-11-07        | economy      |
> | 365-11-07        | large        |
> | 365-11-07        | small        |
> | 366-11-08        | small        |
> | 365-11-07        | extra large  |
> | 364-11-07        | N/A          |
> | 366-11-08        | economy      |
> | 366-11-08        | large        |
> | 364-11-07        | small        |
> | null              | small        |
> | 364-11-07        | large        |
> | 364-11-07        | extra large  |
> | 368-11-07        | N/A          |
> | 368-11-07        | extra large  |
> | 368-11-07        | large        |
> | 365-11-07        | petite       |
> | null              | N/A          |
> | 365-11-07        | economy      |
> | 364-11-07        | economy      |
> | 364-11-07        | petite       |
> | 365-11-07        | N/A          |
> | 368-11-07        | medium       |
> | null              | extra large  |
> | 368-11-07        | small        |
> | 368-11-07        | petite       |
> | 366-11-08        | N/A          |
> +-------------------+--------------+
> 34 rows selected (0.691 seconds)
> {code}
> However I tried generating the auto-partitioned parquet files using Drill 1.2 and then
the above query returned the right results.
> I attached the required data sets.



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