docs/topics/impala_default_file_format.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
-->
<!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
<concept id="default_file_format">

  <title>DEFAULT_FILE_FORMAT Query Option</title>

  <titlealts audience="PDF">

    <navtitle>DEFAULT_FILE_FORMAT</navtitle>

  </titlealts>

  <prolog>
    <metadata>
      <data name="Category" value="Impala"/>
      <data name="Category" value="Impala Query Options"/>
    </metadata>
  </prolog>

  <conbody>

    <p>
      Use the <codeph>DEFAULT_FILE_FORMAT</codeph> query option to set the default table file
      format. The following values are supported:
    </p>

    <p>
      <ul>
        <li>
          <codeph>TEXT</codeph> (<codeph>0</codeph>)
        </li>

        <li>
          <codeph>RC_FILE</codeph> (<codeph>1</codeph>)
        </li>

        <li>
          <codeph>SEQUENCE_FILE</codeph> (<codeph>2</codeph>)
        </li>

        <li>
          <codeph>AVRO</codeph> (<codeph>3</codeph>)
        </li>

        <li>
          <codeph>PARQUET</codeph> (<codeph>4</codeph>)
        </li>

        <li>
          <codeph>KUDU</codeph> (<codeph>5</codeph>)
        </li>

        <li>
          <codeph>ORC</codeph> (<codeph>6</codeph>)
        </li>
      </ul>
    </p>

    <p>
      In impala-shell or Hue, the <codeph>SET DEFAULT_FILE_FORMAT</codeph> statement will not
      return an error when the option was set to an unsupported value. Impala validates the
      value and returns an error when you submitted the next query.
    </p>

    <p>
      <b>Type:</b> Enum as specified above
    </p>

    <p>
      <b>Default:</b> <codeph>TEXT</codeph> (<codeph>0</codeph>)
    </p>

    <p>
      <b>Added in:</b> <keyword keyref="impala32"/>
    </p>

  </conbody>

</concept>