国产 无码 综合区,色欲AV无码国产永久播放,无码天堂亚洲国产AV,国产日韩欧美女同一区二区

JDBC Vertica Source Connector 使用文檔

這篇具有很好參考價值的文章主要介紹了JDBC Vertica Source Connector 使用文檔。希望對大家有所幫助。如果存在錯誤或未考慮完全的地方,請大家不吝賜教,您也可以點擊"舉報違法"按鈕提交疑問。

JDBC Vertica Source Connector 使用文檔

支持以下引擎

  • Spark
  • Flink
  • SeaTunnel Zeta

關(guān)鍵特性

  • 批處理
  • 精確一次性處理
  • 列投影
  • 并行處理
  • 支持用戶自定義拆分
  • 支持查詢 SQL 并實現(xiàn)投影效果

描述

通過 JDBC 讀取外部數(shù)據(jù)源數(shù)據(jù)。

支持的數(shù)據(jù)源信息

Datasource Supported versions Driver Url Maven
Vertica Different dependency version has different driver class. com.vertica.jdbc.Driver jdbc:vertica://localhost:5433/vertica Download

數(shù)據(jù)庫依賴

請下載與 'Maven' 對應(yīng)的支持列表,并將其復(fù)制到 '$SEATNUNNEL_HOME/plugins/jdbc/lib/' 工作目錄中

例如,Vertica 數(shù)據(jù)源:cp vertica-jdbc-xxx.jar $SEATNUNNEL_HOME/plugins/jdbc/lib/

數(shù)據(jù)類型映射

Vertical Data type SeaTunnel Data type
BIT BOOLEAN
TINYINT
TINYINT UNSIGNED
SMALLINT
SMALLINT UNSIGNED
MEDIUMINT
MEDIUMINT UNSIGNED
INT
INTEGER
YEAR
INT
INT UNSIGNED
INTEGER UNSIGNED
BIGINT
LONG
BIGINT UNSIGNED DECIMAL(20,0)
DECIMAL(x,y)(Get the designated column's specified column size.<38) DECIMAL(x,y)
DECIMAL(x,y)(Get the designated column's specified column size.>38) DECIMAL(38,18)
DECIMAL UNSIGNED DECIMAL((Get the designated column's specified column size)+1,
(Gets the designated column's number of digits to right of the decimal point.)))
FLOAT
FLOAT UNSIGNED
FLOAT
DOUBLE
DOUBLE UNSIGNED
DOUBLE
CHAR
VARCHAR
TINYTEXT
MEDIUMTEXT
TEXT
LONGTEXT
JSON
STRING
DATE DATE
TIME TIME
DATETIME
TIMESTAMP
TIMESTAMP
TINYBLOB
MEDIUMBLOB
BLOB
LONGBLOB
BINARY
VARBINAR
BIT(n)
BYTES
GEOMETRY
UNKNOWN
Not supported yet

源選項

Name Type Required Default Description
url String Yes - The URL of the JDBC connection. Refer to a case: jdbc:vertica://localhost:5433/vertica
driver String Yes - The jdbc class name used to connect to the remote data source,
if you use Vertica the value is com.vertica.jdbc.Driver.
user String No - Connection instance user name
password String No - Connection instance password
query String Yes - Query statement
connection_check_timeout_sec Int No 30 The time in seconds to wait for the database operation used to validate the connection to complete
partition_column String No - The column name for parallelism's partition, only support numeric type,Only support numeric type primary key, and only can config one column.
partition_lower_bound Long No - The partition_column min value for scan, if not set SeaTunnel will query database get min value.
partition_upper_bound Long No - The partition_column max value for scan, if not set SeaTunnel will query database get max value.
partition_num Int No job parallelism The number of partition count, only support positive integer. default value is job parallelism
fetch_size Int No 0 For queries that return a large number of objects,you can configure
the row fetch size used in the query toimprove performance by
reducing the number database hits required to satisfy the selection criteria.
Zero means use jdbc default value.
common-options No - Source plugin common parameters, please refer to Source Common Options for details
  • 提示

如果未設(shè)置 partition_column,則會在單一并發(fā)中運行;如果設(shè)置了 partition_column,則將根據(jù)任務(wù)的并發(fā)性進(jìn)行并行執(zhí)行。

任務(wù)示例

簡單示例:

此示例在單一并行中查詢您的測試“數(shù)據(jù)庫”中的 type_bin 'table' 16 個數(shù)據(jù),并查詢其所有字段。您還可以指定要查詢的字段,以便將最終輸出顯示在控制臺上。

env {

您可以在此處設(shè)置 Flink 配置
execution.parallelism = 2
job.mode = "BATCH"
}
source{
Jdbc {
url = "jdbc:vertica://localhost:5433/vertica"
driver = "com.vertica.jdbc.Driver"
connection_check_timeout_sec = 100
user = "root"
password = "123456"
query = "select * from type_bin limit 16"
}
}

transform {
# 如果您想獲取有關(guān)如何配置 seatunnel 的更多信息,并查看完整的轉(zhuǎn)換插件列表,
# 請訪問 https://seatunnel.apache.org/docs/transform-v2/sql
}

sink {
Console {}
}

并行示例:

并行讀取您的查詢表,使用您配置的 shard 字段和 shard 數(shù)據(jù)。如果要讀取整個表,可以這樣做。

source {
Jdbc {
url = "jdbc:vertica://localhost:5433/vertica"
driver = "com.vertica.jdbc.Driver"
connection_check_timeout_sec = 100
user = "root"
password = "123456"
# 根據(jù)需要定義查詢邏輯
query = "select * from type_bin"
# 并行分片讀取字段
partition_column = "id"
# 片段數(shù)量
partition_num = 10
}
}

并行邊界示例:

根據(jù)查詢的上限和下限指定數(shù)據(jù)更加高效,根據(jù)您配置的上限和下限來讀取數(shù)據(jù)源更加高效
source {
Jdbc {
url = "jdbc:vertica://localhost:5433/vertica"
driver = "com.vertica.jdbc.Driver"
connection_check_timeout_sec = 100
user = "root"
password = "123456"
# 根據(jù)需要定義查詢邏輯
query = "select * from type_bin"
partition_column = "id"
# 讀取起始邊界
partition_lower_bound = 1
# 讀取結(jié)束邊界
partition_upper_bound = 500
partition_num = 10
}
}

本文由 白鯨開源 提供發(fā)布支持!文章來源地址http://www.zghlxwxcb.cn/news/detail-654940.html

到了這里,關(guān)于JDBC Vertica Source Connector 使用文檔的文章就介紹完了。如果您還想了解更多內(nèi)容,請在右上角搜索TOY模板網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章,希望大家以后多多支持TOY模板網(wǎng)!

本文來自互聯(lián)網(wǎng)用戶投稿,該文觀點僅代表作者本人,不代表本站立場。本站僅提供信息存儲空間服務(wù),不擁有所有權(quán),不承擔(dān)相關(guān)法律責(zé)任。如若轉(zhuǎn)載,請注明出處: 如若內(nèi)容造成侵權(quán)/違法違規(guī)/事實不符,請點擊違法舉報進(jìn)行投訴反饋,一經(jīng)查實,立即刪除!

領(lǐng)支付寶紅包贊助服務(wù)器費用

相關(guān)文章

覺得文章有用就打賞一下文章作者

支付寶掃一掃打賞

博客贊助

微信掃一掃打賞

請作者喝杯咖啡吧~博客贊助

支付寶掃一掃領(lǐng)取紅包,優(yōu)惠每天領(lǐng)

二維碼1

領(lǐng)取紅包

二維碼2

領(lǐng)紅包