Hive

Hive

Overview

Hive Load Node can write data to hive. Using the flink dialect, the insert operation is currently supported, and the data in the upsert mode will be converted into insert. Manipulating hive tables using the hive dialect is currently not supported.

Supported Version

Load Node	Version
Hive	Hive: 1.x, 2.x, 3.x

Dependencies

Using Hive load requires the introduction of dependencies. Of course, you can also use INLONG to provide jar packages.(sort-connector-hive)

Maven dependency

<dependency>
    <groupId>org.apache.inlong</groupId>
    <artifactId>sort-connector-hive</artifactId>
    <version>1.8.0</version>
</dependency>

How to create a Hive Load Node

Usage for SQL API

The example below shows how to create a Hive Load Node with Flink SQL Cli :

CREATE TABLE hiveTableName (
  id STRING,
  name STRING,
  uv BIGINT,
  pv BIGINT
) WITH (
  'connector' = 'hive',
  'default-database' = 'default',
  'hive-version' = '3.1.2',
  'hive-conf-dir' = 'hdfs://localhost:9000/user/hive/hive-site.xml'
);

Usage for InLong Dashboard

Configuration

When creating a data stream, select Hive for the data stream direction, and click “Add” to configure it.

Usage for InLong Manager Client

TODO: It will be supported in the future.

Hive Load Node Options

Option	Required	Default	Type	Description
connector	required	(none)	String	Specify what connector to use, here should be ‘hive’.
default-database	required	(none)	String
hive-conf-dir	required	(none)	String	If you don’t want to upload hive-site.xml to HDFS, you can put this configuration into the classpath of the project, and then this place only needs to be not empty, otherwise you must fill in the complete HDFS URL.
sink.partition-commit.trigger	optional	(none)	String	If hive exists partition you can set trigger mode.(process-time)
partition.time-extractor.timestamp-pattern	optional	(none)	String	If hive exists partition you can set timestamp-pattern mode.(yyyy-MM-dd…)
sink.partition-commit.delay	optional	(none)	String	If hive exists partition you can set delay mode.(10s,20s,1m…)
sink.partition-commit.policy.kind	optional	(none)	String	Policy to commit a partition is to notify the downstream application that the partition has finished writing, the partition is ready to be read. metastore: add partition to metastore. Only hive table supports metastore policy, file system manages partitions through directory structure. success-file: add ‘_success’ file to directory. Both can be configured at the same time: ‘metastore,success-file’. custom: use policy class to create a commit policy. Support to configure multiple policies: ‘metastore,success-file’.
inlong.metric.labels	optional	(none)	String	Inlong metric label, format of value is groupId=[groupId]&streamId=[streamId]&nodeId=[nodeId].

Data Type Mapping

Hive type	Flink SQL type
char(p)	CHAR(p)
varchar(p)	VARCHAR(p)
string	STRING
boolean	BOOLEAN
tinyint	TINYINT
smallint	SMALLINT
int	INT
bigint	BIGINT
float	FLOAT
double	DOUBLE
decimal(p, s)	DECIMAL(p, s)
date	DATE
timestamp(9)	TIMESTAMP
bytes	BINARY
array	LIST
map	MAP
row	STRUCT