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Posted to issues@hive.apache.org by "Shubham Chaurasia (Jira)" <ji...@apache.org> on 2019/10/17 07:28:00 UTC
[jira] [Updated] (HIVE-22360) MultiSerDe returns wrong results in
last column when the loaded file has more columns than those in table
schema
[ https://issues.apache.org/jira/browse/HIVE-22360?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Shubham Chaurasia updated HIVE-22360:
-------------------------------------
Description:
Repro steps:
Input file:
{code}
1^,1^,^,0^,0^,0
2^,1^,^,0^,1^,0
3^,1^,^,0^,0^,0
4^,1^,^,0^,1^,0
{code}
Queries:
{code}
CREATE TABLE n2(colA int, colB tinyint, colC timestamp, colD smallint, colE smallint) ROW FORMAT SERDE 'org.apache.hadoop.hive.contrib.serde2.MultiDelimitSerDe' WITH SERDEPROPERTIES ("field.delim"="^,")STORED AS TEXTFILE;
LOAD DATA LOCAL INPATH '/Users/schaurasia/Documents/input_6_cols.csv' OVERWRITE INTO TABLE n2;
select * from n2;
// wrong last column results here.
+----------+----------+----------+----------+----------+
| n2.cola | n2.colb | n2.colc | n2.cold | n2.cole |
+----------+----------+----------+----------+----------+
| 1 | 1 | NULL | 0 | NULL |
| 2 | 1 | NULL | 0 | NULL |
| 3 | 1 | NULL | 0 | NULL |
| 4 | 1 | NULL | 0 | NULL |
+----------+----------+----------+----------+----------+
{code}
Cause:
In multi-serde parsing, the total length calculation here: https://github.com/apache/hive/blob/rel/release-3.1.2/serde/src/java/org/apache/hadoop/hive/serde2/lazy/LazyStruct.java#L308 does not take extra fields into account.
was:
Repro steps:
Input file:
{code}
+------------------+
| 1^,1^,^,0^,0^,0 |
| 2^,1^,^,0^,1^,0 |
| 3^,1^,^,0^,0^,0 |
| 4^,1^,^,0^,1^,0 |
+------------------+
{code}
Queries:
{code}
CREATE TABLE n2(colA int, colB tinyint, colC timestamp, colD smallint, colE smallint) ROW FORMAT SERDE 'org.apache.hadoop.hive.contrib.serde2.MultiDelimitSerDe' WITH SERDEPROPERTIES ("field.delim"="^,")STORED AS TEXTFILE;
LOAD DATA LOCAL INPATH '/Users/schaurasia/Documents/input_6_cols.csv' OVERWRITE INTO TABLE n2;
select * from n2;
// wrong last column results here.
+----------+----------+----------+----------+----------+
| n2.cola | n2.colb | n2.colc | n2.cold | n2.cole |
+----------+----------+----------+----------+----------+
| 1 | 1 | NULL | 0 | NULL |
| 2 | 1 | NULL | 0 | NULL |
| 3 | 1 | NULL | 0 | NULL |
| 4 | 1 | NULL | 0 | NULL |
+----------+----------+----------+----------+----------+
{code}
Cause:
In multi-serde parsing, the total length calculation here: https://github.com/apache/hive/blob/rel/release-3.1.2/serde/src/java/org/apache/hadoop/hive/serde2/lazy/LazyStruct.java#L308 does not take extra fields into account.
> MultiSerDe returns wrong results in last column when the loaded file has more columns than those in table schema
> ----------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-22360
> URL: https://issues.apache.org/jira/browse/HIVE-22360
> Project: Hive
> Issue Type: Bug
> Components: Serializers/Deserializers
> Affects Versions: 3.1.2
> Reporter: Shubham Chaurasia
> Assignee: Shubham Chaurasia
> Priority: Major
>
> Repro steps:
> Input file:
> {code}
> 1^,1^,^,0^,0^,0
> 2^,1^,^,0^,1^,0
> 3^,1^,^,0^,0^,0
> 4^,1^,^,0^,1^,0
> {code}
> Queries:
> {code}
> CREATE TABLE n2(colA int, colB tinyint, colC timestamp, colD smallint, colE smallint) ROW FORMAT SERDE 'org.apache.hadoop.hive.contrib.serde2.MultiDelimitSerDe' WITH SERDEPROPERTIES ("field.delim"="^,")STORED AS TEXTFILE;
> LOAD DATA LOCAL INPATH '/Users/schaurasia/Documents/input_6_cols.csv' OVERWRITE INTO TABLE n2;
> select * from n2;
> // wrong last column results here.
> +----------+----------+----------+----------+----------+
> | n2.cola | n2.colb | n2.colc | n2.cold | n2.cole |
> +----------+----------+----------+----------+----------+
> | 1 | 1 | NULL | 0 | NULL |
> | 2 | 1 | NULL | 0 | NULL |
> | 3 | 1 | NULL | 0 | NULL |
> | 4 | 1 | NULL | 0 | NULL |
> +----------+----------+----------+----------+----------+
> {code}
> Cause:
> In multi-serde parsing, the total length calculation here: https://github.com/apache/hive/blob/rel/release-3.1.2/serde/src/java/org/apache/hadoop/hive/serde2/lazy/LazyStruct.java#L308 does not take extra fields into account.
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