748604ff4f
```
alter routine load for cmy2 from kafka("kafka_broker_list" = "ip2:9094", "kafka_topic" = "my_topic");
```
This is useful when the kafka broker list or topic has been changed.
Also modify `show create routine load`, support showing "kafka_partitions" and "kafka_offsets".
120 lines
2.6 KiB
Markdown
120 lines
2.6 KiB
Markdown
---
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{
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"title": "ALTER ROUTINE LOAD",
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"language": "zh-CN"
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}
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---
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<!--
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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-->
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# ALTER ROUTINE LOAD
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## description
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该语法用于修改已经创建的例行导入作业。
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只能修改处于 PAUSED 状态的作业。
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语法：
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ALTER ROUTINE LOAD FOR [db.]job_name
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[job_properties]
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FROM data_source
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[data_source_properties]
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1. `[db.]job_name`
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指定要修改的作业名称。
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2. `tbl_name`
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指定需要导入的表的名称。
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3. `job_properties`
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指定需要修改的作业参数。目前仅支持如下参数的修改：
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1. `desired_concurrent_number`
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2. `max_error_number`
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3. `max_batch_interval`
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4. `max_batch_rows`
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5. `max_batch_size`
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6. `jsonpaths`
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7. `json_root`
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8. `strip_outer_array`
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9. `strict_mode`
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10. `timezone`
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11. `num_as_string`
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12. `fuzzy_parse`
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4. `data_source`
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数据源的类型。当前支持：
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KAFKA
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5. `data_source_properties`
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数据源的相关属性。目前仅支持：
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1. `kafka_partitions`
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2. `kafka_offsets`
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3. `kafka_broker_list`
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4. `kafka_topic`
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5. 自定义 property，如 `property.group.id`
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注：
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1. `kafka_partitions` 和 `kafka_offsets` 用于修改待消费的 kafka partition 的offset，仅能修改当前已经消费的 partition。不能新增 partition。
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## example
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1. 将 `desired_concurrent_number` 修改为 1
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```
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ALTER ROUTINE LOAD FOR db1.label1
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PROPERTIES
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(
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"desired_concurrent_number" = "1"
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);
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```
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2. 将 `desired_concurrent_number` 修改为 10，修改 partition 的offset，修改 group id。
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```
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ALTER ROUTINE LOAD FOR db1.label1
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PROPERTIES
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(
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"desired_concurrent_number" = "10"
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)
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FROM kafka
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(
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"kafka_partitions" = "0, 1, 2",
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"kafka_offsets" = "100, 200, 100",
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"property.group.id" = "new_group"
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);
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```
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## keyword
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ALTER,ROUTINE,LOAD
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