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https://issues.apache.org/jira/browse/HIVE-22360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16956652#comment-16956652
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Shubham Chaurasia commented on HIVE-22360:
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[~belugabehr]
{quote}
Shubham Chaurasia Please take a look at the work I did in HIVE-22337. I have
addressed this there in a way that can apply to all text-based SerDe.
{quote}
Thanks [~belugabehr], great work there! I see that the scenarios like this have
been handled nicely at a common place there.
I see that {{org.apache.hadoop.hive.serde2.text.DelimitedTextSerde}} is capable
of handling all kinds of delimiters.
But if someone still want to use {{MultiSerDe}}, we will need this patch.
> 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: 4.0.0
> Reporter: Shubham Chaurasia
> Assignee: Shubham Chaurasia
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-22360.1.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> 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.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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