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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Work logged] (HIVE-24224) Fix skipping header/footer for Hive on Tez on compressed files
Date Fri, 02 Oct 2020 11:32:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-24224?focusedWorklogId=493912&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-493912
]

ASF GitHub Bot logged work on HIVE-24224:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 02/Oct/20 11:31
            Start Date: 02/Oct/20 11:31
    Worklog Time Spent: 10m 
      Work Description: pgaref opened a new pull request #1546:
URL: https://github.com/apache/hive/pull/1546


   Change-Id: I918a2eff0197e7d92db1f1858f3402b874d3b10a
   
   
   ### What changes were proposed in this pull request?
   Fix header/footer skipping for compressed files -- bug discovered for Hive on Tez
   
   
   ### Why are the changes needed?
   <!--
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     1. If you propose a new API, clarify the use case for a new API.
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   ### Does this PR introduce _any_ user-facing change?
   <!--
   Note that it means *any* user-facing change including all aspects such as the documentation
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   If yes, please clarify the previous behavior and the change this PR proposes - provide
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difference if possible.
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Hive versions or within the unreleased branches such as master.
   If no, write 'No'.
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   ### How was this patch tested?
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Issue Time Tracking
-------------------

            Worklog Id:     (was: 493912)
    Remaining Estimate: 0h
            Time Spent: 10m

> Fix skipping header/footer for Hive on Tez on compressed files
> --------------------------------------------------------------
>
>                 Key: HIVE-24224
>                 URL: https://issues.apache.org/jira/browse/HIVE-24224
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Panagiotis Garefalakis
>            Assignee: Panagiotis Garefalakis
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Compressed file with Hive on Tez  returns header and footers - for both select * and
select count ( * ):
> {noformat}
> printf "offset,id,other\n9,\"20200315 X00 1356\",123\n17,\"20200315 X00 1357\",123\nrst,rst,rst"
> data.csv
> hdfs dfs -put -f data.csv /apps/hive/warehouse/bz2test/bz2tbl1/
> bzip2 -f data.csv 
> hdfs dfs -put -f data.csv.bz2 /apps/hive/warehouse/bz2test/bz2tbl2/
> beeline -e "CREATE EXTERNAL TABLE default.bz2tst2 (
>   sequence   int,
>   id         string,
>   other      string) 
> ROW FORMAT SERDE 'org.apache.hadoop.hive.serde2.OpenCSVSerde'
> LOCATION '/apps/hive/warehouse/bz2test/bz2tbl2' 
> TBLPROPERTIES (
>   'skip.header.line.count'='1',
>   'skip.footer.line.count'='1');"
> beeline -e "
>   SET hive.fetch.task.conversion = none;
>   SELECT * FROM default.bz2tst2;"
> +-------------------+--------------------+----------------+
> | bz2tst2.sequence  |     bz2tst2.id     | bz2tst2.other  |
> +-------------------+--------------------+----------------+
> | offset            | id                 | other          |
> | 9                 | 20200315 X00 1356  | 123            |
> | 17                | 20200315 X00 1357  | 123            |
> | rst               | rst                | rst            |
> +-------------------+--------------------+----------------+
> {noformat}
> PS: HIVE-22769 addressed the issue for Hive on LLAP.



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