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https://issues.apache.org/jira/browse/HIVE-17261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16167409#comment-16167409
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Ferdinand Xu commented on HIVE-17261:
-------------------------------------
Thanks [~junjie] for the investigation. Hive should cast constant in the filter
as char 10 in this case. You can see the following table schema for table
newtypestbl.
{noformat}
create table newtypestbl(c char(10), v varchar(10), d decimal(5,3), da date)
stored as parquet;
{noformat}
> Hive use deprecated ParquetInputSplit constructor which blocked parquet
> dictionary filter
> -----------------------------------------------------------------------------------------
>
> Key: HIVE-17261
> URL: https://issues.apache.org/jira/browse/HIVE-17261
> Project: Hive
> Issue Type: Improvement
> Components: Database/Schema
> Affects Versions: 2.2.0
> Reporter: Junjie Chen
> Assignee: Junjie Chen
> Fix For: 3.0.0
>
> Attachments: HIVE-17261.10.patch, HIVE-17261.11.patch,
> HIVE-17261.2.patch, HIVE-17261.3.patch, HIVE-17261.4.patch,
> HIVE-17261.5.patch, HIVE-17261.6.patch, HIVE-17261.7.patch,
> HIVE-17261.8.patch, HIVE-17261.diff, HIVE-17261.patch
>
>
> Hive use deprecated ParquetInputSplit in
> [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/io/parquet/ParquetRecordReaderBase.java#L128]
> Please see interface definition in
> [https://github.com/apache/parquet-mr/blob/master/parquet-hadoop/src/main/java/org/apache/parquet/hadoop/ParquetInputSplit.java#L80]
> Old interface set rowgroupoffset values which will lead to skip dictionary
> filter in parquet.
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