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https://issues.apache.org/jira/browse/HIVE-17593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16532134#comment-16532134
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Ferdinand Xu commented on HIVE-17593:
-------------------------------------
Is this diff caused by padding?
{code:java}
214,217c214,217
< a 1 a 3 48.88 1
< ab 2 ab 3 8.72 1
< abc 3 abc 3 90.21 1
< abcd 4 abcd 4 3.89 1
---
> a 5 a 3 48.88 1
> ab 5 ab 3 8.72 1
> abc 5 abc 3 90.21 1
> abcd 5 abcd 4 3.89 1
555,558c555,558
< a 1 a 3 48.88 1
< ab 2 ab 3 8.72 1
< abc 3 abc 3 90.21 1
< abcd 4 abcd 4 3.89 1
---
> a 5 a 3 48.88 1
> ab 5 ab 3 8.72 1
> abc 5 abc 3 90.21 1
> abcd 5 abcd 4 3.89 1
{code}
> DataWritableWriter strip spaces for CHAR type before writing, but predicate
> generator doesn't do same thing.
> ------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-17593
> URL: https://issues.apache.org/jira/browse/HIVE-17593
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.3.0, 3.0.0
> Reporter: Junjie Chen
> Assignee: Junjie Chen
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.1.0
>
> Attachments: HIVE-17593.2.patch, HIVE-17593.3.patch, HIVE-17593.patch
>
>
> DataWritableWriter strip spaces for CHAR type before writing. While when
> generating predicate, it does NOT do same striping which should cause data
> missing!
> In current version, it doesn't cause data missing since predicate is not well
> push down to parquet due to HIVE-17261.
> Please see ConvertAstTosearchArg.java, getTypes treats CHAR and STRING as
> same which will build a predicate with tail spaces.
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