Pulsar to MySQL

Target DataSource：

MySQL

Connection

Basic Functions

Function	Description
Incremental Data Sync	Allow subscribing to messages from the source Topic, and converting the messages into DML, including INSERT, UPDATE and DELETE.
Subscription Modification	Add, delete, or modify the subscribed topics. For more information, see Modify Subscription.
Position Resetting	Reset positions by timestamp to consume the data in a past period again.

Advanced Functions

Function	Description
Message Format	The following message formats are supported. See Message Format. CloudCanal format AlibabaCanal format
Removal of Target Data before Full Data Migration	Remove the existing data in the Target before running the Full Data Migration, applicable for DataJobs reruning and scheduled Full Data migrations.
Recreating Target Table	Recreate target tables before running the Full Data Migration, applicable for DataJobs reruning and scheduled Full Data migrations.
Incremental Data Write Conflict Resolution Rule	IGNORE: Ignore primary key conflicts (skip writing), REPLACE: Replace the entire row in case of primary key conflicts.
Handling of Zero Value for Time	Allow setting zero value for time to different data types to prevent errors when writing to the Target.

Limits

Limit	Description
Creating Tables in the Target in Advance	Only support automatic Topic creation for messages.

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Source

Prerequisites

Prerequisite	Description
Port Preparation	Allow the migration and sync node (Worker) to connect to the nodes of Pulsar.

Parameters

Parameter	Description
schemaFormat	Message format. For more information, see Message Format.
subscriptionMode	Pulsar subscription mode, including Durable and NonDurable.
consumeParallel	Degree of consuming Pulsar topics in parallel.
receiverQueueSize	The size of a Pulsar receiver queue.
receiverMaxNumBytes	The maximum bytes of a batch received from Pulsar (in bytes).
receiverTimeout	The timeout period for receiving a batch from Pulsar (in seconds).
connectionTimeoutMs	The timeout period for connection to Pulsar Client (in milliseconds).

Tips: To modify the general parameters, see General Parameters and Functions.

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Target

Prerequisites

Prerequisite	Description
Permissions for Account	See Permissions Required for MySQL/MariaDB.
Port Preparation	Allow the migration and sync node (Worker) to connect to the MySQL/MariaDB port (e.g., 3306).

Parameters

Parameter	Description
keyConflictStrategy	Strategy for handling primary key conflicts during write in Incremental DataTask: IGNORE: Ignore conflicts (default) REPLACE: Replace conflicts (optional)
dstWholeReplace	Convert INSERT and UPDATE operations into full row replacement in the Target.
deCycle	Enable filtering in bidirectional sync to filter DML/DDL with specific markers.
specialSqlMode	Set a specific SQL mode when initializing the connection between databases.
defaultGisSRID	Set the SRID for GIS data types.
dstTimeZone	Target time zone, e.g., +08:00, Asia/Shanghai, America/New_York, etc.
increParallelApplyStrategy	Parallel write strategy for relational databases in the Target: KEY: Parallel writing to partitions separated based on primary keys. TABLE: Parallel writing to partitions separated based on tables. KEY_UPGRADE_TABLE: Parallel writing to partitions separated based on primary keys. Upgrade the partition to a table if there is an update to the unique key.

Tips: To modify the general parameters, see General Parameters and Functions.