-
Notifications
You must be signed in to change notification settings - Fork 1.8k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[Doc] Improve DB2 Source Vertica Source & DB2 Sink Vertica Sink docum…
…ent (#5102)
- Loading branch information
1 parent
4acd370
commit 3aa4ae5
Showing
4 changed files
with
656 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,171 @@ | ||
| # DB2 | ||
|
|
||
| > JDBC DB2 Sink Connector | ||
| ## Support Those Engines | ||
|
|
||
| > Spark<br/> | ||
| > Flink<br/> | ||
| > SeaTunnel Zeta<br/> | ||
| ## Key Features | ||
|
|
||
| - [x] [exactly-once](../../concept/connector-v2-features.md) | ||
| - [ ] [cdc](../../concept/connector-v2-features.md) | ||
|
|
||
| > Use `Xa transactions` to ensure `exactly-once`. So only support `exactly-once` for the database which is | ||
| > support `Xa transactions`. You can set `is_exactly_once=true` to enable it. | ||
| ## Description | ||
|
|
||
| Write data through jdbc. Support Batch mode and Streaming mode, support concurrent writing, support exactly-once | ||
| semantics (using XA transaction guarantee). | ||
|
|
||
| ## Supported DataSource Info | ||
|
|
||
| | Datasource | Supported Versions | Driver | Url | Maven | | ||
| |------------|----------------------------------------------------------|--------------------------------|-----------------------------------|-----------------------------------------------------------------------| | ||
| | DB2 | Different dependency version has different driver class. | com.ibm.db2.jdbc.app.DB2Driver | jdbc:db2://127.0.0.1:50000/dbname | [Download](https://mvnrepository.com/artifact/com.ibm.db2.jcc/db2jcc) | | ||
|
|
||
| ## Database Dependency | ||
|
|
||
| > Please download the support list corresponding to 'Maven' and copy it to the '$SEATNUNNEL_HOME/plugins/jdbc/lib/' working directory<br/> | ||
| > For example DB2 datasource: cp db2-connector-java-xxx.jar $SEATNUNNEL_HOME/plugins/jdbc/lib/ | ||
| ## Data Type Mapping | ||
|
|
||
| | DB2 Data type | SeaTunnel Data type | | ||
| |------------------------------------------------------------------------------------------------------|---------------------|---| | ||
| | BOOLEAN | BOOLEAN | | ||
| | SMALLINT | SHORT | | ||
| | INT<br/>INTEGER<br/> | INTEGER | | ||
| | BIGINT | LONG | | ||
| | DECIMAL<br/>DEC<br/>NUMERIC<br/>NUM | DECIMAL(38,18) | | ||
| | REAL | FLOAT | | ||
| | FLOAT<br/>DOUBLE<br/>DOUBLE PRECISION<br/>DECFLOAT | DOUBLE | | ||
| | CHAR<br/>VARCHAR<br/>LONG VARCHAR<br/>CLOB<br/>GRAPHIC<br/>VARGRAPHIC<br/>LONG VARGRAPHIC<br/>DBCLOB | STRING | | ||
| | BLOB | BYTES | | ||
| | DATE | DATE | | ||
| | TIME | TIME | | ||
| | TIMESTAMP | TIMESTAMP | | ||
| | ROWID<br/>XML | Not supported yet | | ||
|
|
||
| ## Sink Options | ||
|
|
||
| | Name | Type | Required | Default | Description | | ||
| |-------------------------------------------|---------|----------|---------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ||
| | url | String | Yes | - | The URL of the JDBC connection. Refer to a case: jdbc:db2://127.0.0.1:50000/dbname | | ||
| | driver | String | Yes | - | The jdbc class name used to connect to the remote data source,<br/> if you use DB2 the value is `com.ibm.db2.jdbc.app.DB2Driver`. | | ||
| | user | String | No | - | Connection instance user name | | ||
| | password | String | No | - | Connection instance password | | ||
| | query | String | No | - | Use this sql write upstream input datas to database. e.g `INSERT ...`,`query` have the higher priority | | ||
| | database | String | No | - | Use this `database` and `table-name` auto-generate sql and receive upstream input datas write to database.<br/>This option is mutually exclusive with `query` and has a higher priority. | | ||
| | table | String | No | - | Use database and this table-name auto-generate sql and receive upstream input datas write to database.<br/>This option is mutually exclusive with `query` and has a higher priority. | | ||
| | primary_keys | Array | No | - | This option is used to support operations such as `insert`, `delete`, and `update` when automatically generate sql. | | ||
| | support_upsert_by_query_primary_key_exist | Boolean | No | false | Choose to use INSERT sql, UPDATE sql to process update events(INSERT, UPDATE_AFTER) based on query primary key exists. This configuration is only used when database unsupport upsert syntax. **Note**: that this method has low performance | | ||
| | connection_check_timeout_sec | Int | No | 30 | The time in seconds to wait for the database operation used to validate the connection to complete. | | ||
| | max_retries | Int | No | 0 | The number of retries to submit failed (executeBatch) | | ||
| | batch_size | Int | No | 1000 | For batch writing, when the number of buffered records reaches the number of `batch_size` or the time reaches `batch_interval_ms`<br/>, the data will be flushed into the database | | ||
| | batch_interval_ms | Int | No | 1000 | For batch writing, when the number of buffers reaches the number of `batch_size` or the time reaches `batch_interval_ms`, the data will be flushed into the database | | ||
| | is_exactly_once | Boolean | No | false | Whether to enable exactly-once semantics, which will use Xa transactions. If on, you need to<br/>set `xa_data_source_class_name`. | | ||
| | generate_sink_sql | Boolean | No | false | Generate sql statements based on the database table you want to write to | | ||
| | xa_data_source_class_name | String | No | - | The xa data source class name of the database Driver, for example, DB2 is `com.db2.cj.jdbc.Db2XADataSource`, and<br/>please refer to appendix for other data sources | | ||
| | max_commit_attempts | Int | No | 3 | The number of retries for transaction commit failures | | ||
| | transaction_timeout_sec | Int | No | -1 | The timeout after the transaction is opened, the default is -1 (never timeout). Note that setting the timeout may affect<br/>exactly-once semantics | | ||
| | auto_commit | Boolean | No | true | Automatic transaction commit is enabled by default | | ||
| | common-options | | no | - | Sink plugin common parameters, please refer to [Sink Common Options](common-options.md) for details | | ||
|
|
||
| ### Tips | ||
|
|
||
| > If partition_column is not set, it will run in single concurrency, and if partition_column is set, it will be executed in parallel according to the concurrency of tasks. | ||
| ## Task Example | ||
|
|
||
| ### Simple: | ||
|
|
||
| > This example defines a SeaTunnel synchronization task that automatically generates data through FakeSource and sends it to JDBC Sink. FakeSource generates a total of 16 rows of data (row.num=16), with each row having two fields, name (string type) and age (int type). The final target table is test_table will also be 16 rows of data in the table. Before run this job, you need create database test and table test_table in your DB2. And if you have not yet installed and deployed SeaTunnel, you need to follow the instructions in [Install SeaTunnel](../../start-v2/locally/deployment.md) to install and deploy SeaTunnel. And then follow the instructions in [Quick Start With SeaTunnel Engine](../../start-v2/locally/quick-start-seatunnel-engine.md) to run this job. | ||
| ``` | ||
| # Defining the runtime environment | ||
| env { | ||
| # You can set flink configuration here | ||
| execution.parallelism = 1 | ||
| job.mode = "BATCH" | ||
| } | ||
| source { | ||
| # This is a example source plugin **only for test and demonstrate the feature source plugin** | ||
| FakeSource { | ||
| parallelism = 1 | ||
| result_table_name = "fake" | ||
| row.num = 16 | ||
| schema = { | ||
| fields { | ||
| name = "string" | ||
| age = "int" | ||
| } | ||
| } | ||
| } | ||
| # If you would like to get more information about how to configure seatunnel and see full list of source plugins, | ||
| # please go to https://seatunnel.apache.org/docs/category/source-v2 | ||
| } | ||
| transform { | ||
| # If you would like to get more information about how to configure seatunnel and see full list of transform plugins, | ||
| # please go to https://seatunnel.apache.org/docs/category/transform-v2 | ||
| } | ||
| sink { | ||
| jdbc { | ||
| url = "jdbc:db2://127.0.0.1:50000/dbname" | ||
| driver = "com.ibm.db2.jdbc.app.DB2Driver" | ||
| user = "root" | ||
| password = "123456" | ||
| query = "insert into test_table(name,age) values(?,?)" | ||
| } | ||
| # If you would like to get more information about how to configure seatunnel and see full list of sink plugins, | ||
| # please go to https://seatunnel.apache.org/docs/category/sink-v2 | ||
| } | ||
| ``` | ||
|
|
||
| ### Generate Sink SQL | ||
|
|
||
| > This example not need to write complex sql statements, you can configure the database name table name to automatically generate add statements for you | ||
| ``` | ||
| sink { | ||
| jdbc { | ||
| url = "jdbc:db2://127.0.0.1:50000/dbname" | ||
| driver = "com.ibm.db2.jdbc.app.DB2Driver" | ||
| user = "root" | ||
| password = "123456" | ||
| # Automatically generate sql statements based on database table names | ||
| generate_sink_sql = true | ||
| database = test | ||
| table = test_table | ||
| } | ||
| } | ||
| ``` | ||
|
|
||
| ### Exactly-once : | ||
|
|
||
| > For accurate write scene we guarantee accurate once | ||
| ``` | ||
| sink { | ||
| jdbc { | ||
| url = "jdbc:db2://127.0.0.1:50000/dbname" | ||
| driver = "com.ibm.db2.jdbc.app.DB2Driver" | ||
| max_retries = 0 | ||
| user = "root" | ||
| password = "123456" | ||
| query = "insert into test_table(name,age) values(?,?)" | ||
| is_exactly_once = "true" | ||
| xa_data_source_class_name = "com.db2.cj.jdbc.Db2XADataSource" | ||
| } | ||
| } | ||
| ``` | ||
|
|
Oops, something went wrong.