Kafka to MongoDB

BladePipe supports data replication from Kafka to MongoDB. View supported migration, sync, verification, and connector capabilities.

Target DataSource：

MongoDB

Connection

Basic Functions

Function	Description
Incremental Data Sync	Allow subscribing to messages from the source Topic and transforming them into DML operations, namely, INSERT, UPDATE, 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
Pre-Creation of Collection in the Target	Automatic collection creation is not supported when moving data from Kafka/AutoMQ to MongoDB.

Limits

Limit	Description
Creating Tables in the Target in Advance	Only support automatic Topic creation for messages.
Raw Message Format	Only support raw message replication from Kafka to Kafka, and Raw Message Format needs to be selected at both the Source and the Target.

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Source

Prerequisites

Prerequisite	Description
Port Preparation	Allow the migration and sync node (Worker) to connect to the Kafka ports.

Parameters

Parameter	Description
schemaFormat	MQ Message format. For more information, see Message Format.
consumerGroupId	Kafka consumer group ID.
consumeParallel	Degree of consuming Kafka topics in parallel.
sessionTimeoutMs	Kafka session timeout in milliseconds.
maxPollRecords	Maximum number of messages fetched in one poll from Kafka.
dbHeartbeatIntervalSec	Interval for initiating heartbeat on the source database.
dbHeartbeatToleranceStep	The threshold of gap between the latest offset and the current offset. If the actual gap is bigger than the threshold, BladePipe won‘t send heartbeat message.
customClientProps	Custom properties passed to the Kafka client in JSON format. The key is the parameter name and the value is the parameter value. This setting takes the highest priority. For example: AWS IAM Access Control

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 MongoDB.
Port Preparation	Allow the migration and sync node (sidecar) to connect to MongoDB/DocumentDB nodes.

Parameters

Parameter	Description
totalDataInMemMb	Maximum data size allowed in memory when writing in batches; If the data size exceeds the memory limit, or the wait time exceeds asyncFlushIntervalSec, then data is flushed to the write queue.
asyncFlushIntervalSec	Interval to wait for flushing when writing in batches; If the wait time exceeds asyncFlushIntervalSec, or the data size exceeds totalDataInMemMb, then data is flushed to the write queue.
flushBatchMb	Maximum batch size per table; If the batch size exceeds this limit, then data is flushed to the write queue.
realFlushPauseSec	Wait time to flush data to MongoDB. 0 means no wait is needed.
enableTimeZoneProcess	Enable time zone conversion for time fields.
timezone	Timezone in the Target (by default, UTC).
enableBatchApply	Enable batch write mode (it is disabled by default).

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