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https://issues.apache.org/jira/browse/HIVE-4703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13866224#comment-13866224
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Brett Randall commented on HIVE-4703:
-------------------------------------

I'm seeing similar to this on Hive 0.10 (CDH 4.5), for external tables using 
Avro.  If I define this Avro schema:

{code}
{
  "type" : "record",
  "name" : "mytable",
  "namespace" : "mynamespace",
  "doc" : "schema comment",
  "fields" : [ {
    "name" : "Test",
    "type" : [ "null", "string" ],
    "doc" : "test field comment",
    "default" : null
  } ]
}
{code}

.. when I use Hue/Beehive to DESCRIBE the table, I get 
col_name::data_type::comment of: test::string::from deserializer.

.. where "test field comment" <> "from deserializer".

Same problem, or is there an issue with the Avro SerDe?

> Describe on a table returns "from deserializer" for column comments instead 
> of values supplied in Create Table
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-4703
>                 URL: https://issues.apache.org/jira/browse/HIVE-4703
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 0.12.0
>            Reporter: Eugene Koifman
>         Attachments: webhcatMini.sh
>
>
> This causes Templeton e2e tests to fail.
> start WeHcat server (build/dist/hcatalog/sbin/webhcat_server.sh start)
> run commands in the attached webhcatMini.sh.
> It creates a table with some comments on columns.
> When executing describe (GET) on this table, original comments are lost and 
> are replaced with "from deserializer" string.
> Here is the output of these commands:
> localhost:dev ekoifman$ webhcatMini.sh
> Running delete test_table ifExists
> HTTP/1.1 200 OK
> Set-Cookie: 
> hadoop.auth="u=ekoifman&p=ekoifman&t=simple&e=1370945567179&s=vIBKhGQwzs5pPAY3IkhyPpDkWrY=";Version=1;Path=/;Discard
> Expires: Thu, 01 Jan 1970 00:00:00 GMT
> Content-Type: application/json
> Transfer-Encoding: chunked
> Server: Jetty(7.6.0.v20120127)
> {"table":"test_table","database":"default"}
> Running create test_table
> HTTP/1.1 200 OK
> Set-Cookie: 
> hadoop.auth="u=ekoifman&p=ekoifman&t=simple&e=1370945569788&s=g37NbyyRnf667IciUiIpIQNYGOo=";Version=1;Path=/;Discard
> Expires: Thu, 01 Jan 1970 00:00:00 GMT
> Content-Type: application/json
> Transfer-Encoding: chunked
> Server: Jetty(7.6.0.v20120127)
> {"table":"test_table","database":"default"}
> Running describe test_table
> HTTP/1.1 200 OK
> Set-Cookie: 
> hadoop.auth="u=ekoifman&p=ekoifman&t=simple&e=1370945572423&s=7kE1FOn1Co2JQzZfW0V1myqulw0=";Version=1;Path=/;Discard
> Expires: Thu, 01 Jan 1970 00:00:00 GMT
> Content-Type: application/json
> Transfer-Encoding: chunked
> Server: Jetty(7.6.0.v20120127)
> {"columns":[{"name":"int","comment":"from 
> deserializer","type":"string"},{"name":"int2","comment":"from 
> deserializer","type":"int"}],"database":"default","table":"test_table"}
> Mon Jun 10 17:12:55 PDT 2013



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