SAP HANA to Doris

BladePipe supports data replication from SAP HANA to Doris. View supported migration, sync, verification, and connector capabilities.

Target DataSource：

Doris

Connection

Function	Description
Schema Migration	If the target schema does not exist, BladePipe will automatically generate and execute CREATE statements based on the source metadata and the mapping rule.
Full Data Migration	Migrate data by sequentially scanning data in tables and writing it in batches to the target database.
Incremental Data Sync	Sync of common DML like INSERT, UPDATE, DELETE is supported. UPDATE and DELETE for tables without primary keys are not synced by default (manual selection required).
Data Verification and Correction	Verify all existing data. Optionally, you can correct the inconsistent data based on verification results. Scheduled DataTasks are supported. For more information, see Create Verification and Correction DataJob.
Subscription Modification	Add, delete, or modify the subscribed tables with support for historical data migration. For more information, see Modify Subscription.
Position Resetting	Reset positions by data ID or timestamp. Allow re-consumption of CDC data in a past period.
Table Name Mapping	Support the mapping rules, namely, keeping the name the same as that in Source, converting the text to lowercase, converting the text to uppercase, truncating the name by "_digit" suffix.
Metadata Retrieval	Retrieve the target metadata with filtering conditions or target primary keys set from the source table.

Function	Description
Trigger-based Incremental Data Sync	The DataJob automatically creates triggers on tables. These triggers capture INSERT, UPDATE, and DELETE events and write them to the CDC tables.
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.
Stream Load	Use Stream Load to write data to Doris/SelectDB BE. By default, batch write is adopted, with dynamic adjustment of data flush interval and batch size.
Handling of Zero Value for Time	Allow setting zero value for time to different data types to prevent errors when writing to the Target.
Custom Table Properties	Include settings for properties such as bucket count and replica count.
Setting Data Partitions	When creating a DataJob, specify partition definitions at the table level (static or dynamic). Automatically add these partition definitions during schema migration.
Scheduled Full Data Migration	For more information, see Create Scheduled Full Data DataJob.
Custom Code	For more information, see Custom Code Processing, Debug Custom Code and Logging in Custom Code.
Data Filtering Conditions	Support data filtering using WHERE conditions, with SQL-92 as the SQL language. For more information, see Data Filtering.

Limit	Description
DDL Change Handling	BladePipe captures data changes in a source SAP HANA instance through triggers. DDL synchronization is not supported. If there are DDL changes, follow the steps in Change Schema in a Source SAP HANA Instance.
Hana Data Types in Incremental Sync	In the incremental data sync phase with a source Hana instance, it does not allow capturing changes for TEXT, BIN_TEXT, ST_POINT, and ST_GEOMETRY data types by triggers.
Target Table Type	Only support Unique key model(Unique).
Source Table Type	Migration and sync of tables without primary keys are not supported.
Data Type	Do not support binary data such as BINARY, BLOB.
Incremental Data Write Conflict Resolution Rule	Using Stream Load method, the primary key is used for full row replacement.

Prerequisite	Description
Permissions for Account	See Permissions Required for Hana

Parameter	Description
sysTriggerDataSchema	The schema name where the trigger writes incremental data.
sysTriggerDataTable	The table name where the trigger writes incremental data.
incrPagingCount	The total amount of data queried each time by the trigger during incremental data synchronization.
incrIdleSleepSecond	The interval between queries for the trigger during idle period of incremental data synchronization (in seconds).
incrScanIntervalMs	The interval between data queries for the trigger during incremental data synchronization (in milliseconds).
autoCheckTriggerAndReInstall	Check the trigger status and reinstall it when the DataJob starts.
triggerDataCleanEnabled	Enable scheduled cleanup of trigger incremental data.
triggerDataCleanIntervalMin	The cleanup interval for trigger incremental data (in minutes).
triggerDataRetentionMin	The retention time for trigger incremental data (in minutes).
dbHeartbeatEnable	Configure whether to enable heartbeat for the source database.
needTriggerDataJsonEscape	Whether to escape characters (\) in the trigger incremental JSON.
triggerDataJsonQuotation	Custom quotation marks for trigger incremental JSON.
triggerParamBathSize	Set the number of columns involved per variable in the trigger template.
fullBeforeImageEnabled	Enable the trigger to record the complete data before all column changes.

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

Prerequisite	Description
Permissions for Account	SELECT and DDL permissions (optional)
Port Preparation	Allow the migration and sync node (Worker) to connect to the Doris/SelectDB FE QueryPort and FE/BE HttpPort.

Parameter	Description
host	MySQL port, corresponding to Doris/SelectDB FE QueryPort.
httpHost	Host for Doris stream load, corresponding to Doris/SelectDB FE/BE HttpPort.
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 Doris/SelectDB using stream load. 0 means no wait is needed.
soTimeoutSec	TCP socket timeout (so_timeout) during QueryPort operations.
enableTimeZoneProcess	Enable time zone conversion for time fields.
timezone	Timezone in the Target, e.g., +08:00 Asia/Shanghai America/New_York.
maxInSizePerQuery	Maximum number of IN clause values per query during secondary verification. Queries exceeding this limit will be automatically split.

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