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Revision be7f1e9979c38b1358b0af2b358bacb0bd523c80 authored by Dongjoon Hyun on 24 January 2024, 00:38:45 UTC, committed by Dongjoon Hyun on 24 January 2024, 00:38:53 UTC 
[SPARK-46817][CORE] Fix `spark-daemon.sh` usage by adding `decommission` command
 
### What changes were proposed in this pull request?

This PR aims to fix `spark-daemon.sh` usage by adding `decommission` command.

### Why are the changes needed?

This was missed when SPARK-20628 added `decommission` command at Apache Spark 3.1.0. The command has been used like the following.

https://github.com/apache/spark/blob/0356ac00947282b1a0885ad7eaae1e25e43671fe/sbin/decommission-worker.sh#L41

### Does this PR introduce _any_ user-facing change?

No, this is only a change on usage message.

### How was this patch tested?

Manual review.

### Was this patch authored or co-authored using generative AI tooling?

No.

Closes #44856 from dongjoon-hyun/SPARK-46817.

Authored-by: Dongjoon Hyun <dhyun@apple.com>
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>
(cherry picked from commit 00a92d328576c39b04cfd0fdd8a30c5a9bc37e36)
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>
1 parent 05f7aa5
Raw File
sql-ref-syntax-aux-conf-mgmt-set-timezone.md 
---
layout: global
title: SET TIME ZONE
displayTitle: SET TIME ZONE
license: |
  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 SET TIME ZONE command sets the time zone of the current session.

### Syntax

```sql
SET TIME ZONE LOCAL
SET TIME ZONE 'timezone_value'
SET TIME ZONE INTERVAL interval_literal
```

### Parameters

* **LOCAL**

    Set the time zone to the one specified in the java `user.timezone` property, or to the environment variable `TZ` if `user.timezone` is undefined, or to the system time zone if both of them are undefined.

* **timezone_value**

    The ID of session local timezone in the format of either region-based zone IDs or zone offsets. Region IDs must have the form 'area/city', such as 'America/Los_Angeles'. Zone offsets must be in the format '`(+|-)HH`', '`(+|-)HH:mm`' or '`(+|-)HH:mm:ss`', e.g '-08', '+01:00' or '-13:33:33'. Also, 'UTC' and 'Z' are supported as aliases of '+00:00'. Other short names are not recommended to use because they can be ambiguous.

* **interval_literal**

    The [interval literal](sql-ref-literals.html#interval-literal) represents the difference between the session time zone to the 'UTC'. It must be in the range of [-18, 18] hours and max to second precision, e.g. `INTERVAL 2 HOURS 30 MINUTES` or `INTERVAL '15:40:32' HOUR TO SECOND`.

### Examples

```sql
-- Set time zone to the system default.
SET TIME ZONE LOCAL;

-- Set time zone to the region-based zone ID.
SET TIME ZONE 'America/Los_Angeles';

-- Set time zone to the Zone offset.
SET TIME ZONE '+08:00';

-- Set time zone with intervals.
SET TIME ZONE INTERVAL 1 HOUR 30 MINUTES;
SET TIME ZONE INTERVAL '08:30:00' HOUR TO SECOND;
```

### Related Statements

* [SET](sql-ref-syntax-aux-conf-mgmt-set.html)
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