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doc: refine Kafka source connector configuration parameters

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gccgdb1234 2023-05-19 08:18:29 +08:00
parent 779ec32415
commit 3cfdbf2f0c
2 changed files with 13 additions and 8 deletions
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13
docs/en/20-third-party/11-kafka.md vendored
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@ -424,11 +424,14 @@ The following configuration items apply to TDengine Sink Connector and TDengine
### TDengine Source Connector specific configuration
1. `connection.database`: source database name, no default value.
2. `topic.prefix`: topic name prefix after data is imported into kafka. Use `topic.prefix` + `connection.database` name as the full topic name. Defaults to the empty string "".
3. `timestamp.initial`: Data synchronization start time. The format is 'yyyy-MM-dd HH:mm:ss'. Default "1970-01-01 00:00:00".
4. `poll.interval.ms`: Pull data interval, the unit is ms. Default is 1000.
5. `fetch.max.rows`: The maximum number of rows retrieved when retrieving the database. Default is 100.
6. `out.format`: The data format. The value could be line or json. The line represents the InfluxDB Line protocol format, and json represents the OpenTSDB JSON format. Default is `line`.
2. `topic.prefix`: topic name prefix used when importing data into kafka. Its defaults value is empty string "".
3. `timestamp.initial`: Data synchronization start time. The format is 'yyyy-MM-dd HH:mm:ss'. If it is not set, the data importing to Kafka will be started from the first/oldest row in the database.
4. `poll.interval.ms`: The time interval for checking newly created tables or removed tables, default value is 1000.
5. `fetch.max.rows`: The maximum number of rows retrieved when retrieving the database, default is 100.
6. `out.format`: The data format. The value could be `line`, which represents the InfluxDB Line protocol format.
7. 7. `query.interval.ms`: The time range of reading data from TDengine each time, its unit is millisecond. It should be adjusted according to the data flow in rate, the default value is 1000.
8. `topic.per.stable`: If it's set to true, it means one super table in TDengine corresponds to a topic in Kafka, the topic naming rule is `<topic.prefix>-<connection.database>-<stable.name>`; if it's set to false, it means the whole DB corresponds to a topic in Kafka, the topic naming rule is `<topic.prefix>-<connection.database>`.
## Other notes

8
docs/zh/20-third-party/11-kafka.md vendored
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@ -435,10 +435,12 @@ confluent local services connect connector unload TDengineSourceConnector
1. `connection.database`: 源数据库名称，无缺省值。
2. `topic.prefix`： 数据导入 kafka 后 topic 名称前缀。 使用 `topic.prefix` + `connection.database` 名称作为完整 topic 名。默认为空字符串 ""。
3. `timestamp.initial`: 数据同步起始时间。格式为'yyyy-MM-dd HH:mm:ss'。默认为 "1970-01-01 00:00:00"。
4. `poll.interval.ms`: 拉取数据间隔，单位为 ms。默认为 1000。
3. `timestamp.initial`: 数据同步起始时间。格式为'yyyy-MM-dd HH:mm:ss'，若未指定则从指定 DB 中最早的一条记录开始。
4. `poll.interval.ms`: 检查是否有新建或删除的表的时间间隔，单位为 ms。默认为 1000。
5. `fetch.max.rows` : 检索数据库时最大检索条数。 默认为 100。
6. `out.format`: 数据格式。取值 line 或 json。line 表示 InfluxDB Line 协议格式， json 表示 OpenTSDB JSON 格式。默认为 line。
6. `out.format`: 数据格式。取值为 `line`， 表示 InfluxDB Line 协议格式
7. `query.interval.ms`: 从 TDengine 一次读取数据的时间跨度，需要根据表中的数据特征合理配置，避免一次查询的数据量过大或过小；在具体的环境中建议通过测试设置一个较优值，默认值为 1000.
8. `topic.per.stable`: 如果设置为true，表示一个超级表对应一个 Kafka topic，topic的命名规则 `<topic.prefix>-<connection.database>-<stable.name>`；如果设置为 false，则指定的 DB 中的所有数据进入一个 Kafka topic，topic 的命名规则为 `<topic.prefix>-<connection.database>`
## 其他说明