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sql-ref-syntax-aux-conf-mgmt-reset.md

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layout title displayTitle license
global
RESET
RESET
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.

Description

The RESET command resets runtime configurations specific to the current session which were set via the SET command to their default values.

Syntax

RESET;

RESET configuration_key;

Parameters

  • (none)

    Reset any runtime configurations specific to the current session which were set via the SET command to their default values.

  • configuration_key

    Restore the value of the configuration_key to the default value. If the default value is undefined, the configuration_key will be removed.

Examples

-- Reset any runtime configurations specific to the current session which were set via the SET command to their default values.
RESET;

-- If you start your application with --conf spark.foo=bar and set spark.foo=foobar in runtime, the example below will restore it to 'bar'. If spark.foo is not specified during starting, the example bellow will remove this config from the SQLConf. It will ignore nonexistent keys.
RESET spark.abc;

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