WebHCat Reference DDL
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DDL Command — POST ddl

Description

Performs an HCatalog DDL command. The command is executed immediately upon request. Responses are limited to 1 MB. For requests which may return longer results consider using the Hive resource as an alternative.

URL

http://www.myserver.com/templeton/ddl

Parameters

Name

Description

Required?

Default

exec

The HCatalog ddl string to execute

Required

None

group

The user group to use when creating a table

Optional

None

permissions

The permissions string to use when creating a table. The format is "rwxrw-r-x".

Optional

None

The standard parameters are also supported.

Results

Name

Description

stdout

A string containing the result HCatalog sent to standard out (possibly empty).

stderr

A string containing the result HCatalog sent to standard error (possibly empty).

exitcode

The exitcode HCatalog returned.

Example

Curl Command

% curl -s -d user.name=ctdean \
       -d 'exec=show tables;' \
       'http://localhost:50111/templeton/v1/ddl'

JSON Output

{
 "stdout": "important_table
            my_other_table
            my_table
            my_table_2
            pokes
            ",
 "stderr": "WARNING: org.apache.hadoop.metrics.jvm.EventCounter is deprecated...
            Hive history file=/tmp/ctdean/hive_job_log_ctdean_201111111258_2117356679.txt
            OK
            Time taken: 1.202 seconds
            ",
 "exitcode": 0
}

JSON Output (error)

{
  "stdout": "",
  "stderr": "WARNING: org.apache.hadoop.metrics.jvm.EventCounter is deprecated...
            Hive history file=/tmp/ctdean/hive_job_log_ctdean_201204051246_689834593.txt
            FAILED: Parse Error: line 1:5 Failed to recognize predicate 'tab'...

            ",
  "exitcode": 11
}


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Old version of this document (HCatalog 0.5.0): POST ddl

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