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OMS Documentation What is OMS Community Edition? Terms OMS Community Edition HA Overview Hierarchical functional system Basic components Limitations Data migration process Data synchronization process Deployment modes System and network requirements Memory and disk requirements Prepare the environment Deploy OMS Community Edition on a single node Deploy OMS Community Edition on multiple nodes in a single region Deploy OMS Community Edition on multiple nodes in multiple regions Integrate the OIDC protocol into OMS Community Edition to implement SSO Scale out OMS Community Edition Check the deployment Deploy a time-series database (Optional) Log on to the console of OMS Community Edition Overview Configure user information Change your logon password Log off Overview Migrate data from a MySQL database to OceanBase Database Community Edition Migrate data from OceanBase Database Community Edition to a MySQL database Migrate data from HBase to OBKV Migrate data between instances of OceanBase Database Community Edition Migrate data in active-active disaster recovery scenarios Migrate data from a TiDB database to OceanBase Database Community Edition Migrate data from a PostgreSQL database to OceanBase Database Community Edition View the details of a data migration project Change the name of a data migration project View and modify migration objects Manage computing platforms Use tags to manage data migration projects Perform batch operations on data migration projects Download and import settings of migration objects Start and pause a data migration project Release and delete a data migration project DML filtering DDL synchronization Configure matching rules for migration objects Wildcard rules Rename a database table Use SQL conditions to filter data Create and update a heartbeat table Schema migration mechanisms Schema migration operations Set an incremental synchronization timestamp Supported DDL operations in incremental migration from OceanBase Community Edition to a MySQL database and limits Supported DDL operations in incremental migration between MySQL tenants of OceanBase Database Data synchronization overview Create a project to synchronize data from OceanBase Database Community Edition to a Kafka instance Create a project to synchronize data from OceanBase Database Community Edition to a RocketMQ instance View details of a data synchronization project Change the name of a data synchronization project View and modify synchronization objects Use tags to manage data synchronization projects Perform batch operations on data synchronization projects Download and import the settings of synchronization objects Start and pause a data synchronization project Release and delete a data synchronization project DML filtering DDL synchronization Rename a topic Use SQL conditions to filter data Column filtering Data formats Create an OceanBase-CE data source Create a MySQL data source Create a TiDB data source Create a Kafka data source Create a RocketMQ data source Create a PostgreSQL data source Create an HBase data source View data source information Copy a data source Edit a data source Delete a data source Create a database user User privileges Enable binlogs for the MySQL database O&M overview Go to the overview page View server information Update the quota View server logs View O&M tasks Skip a task or subtask Retry a task or subtask Overview Manage users Manage departments View project alerts View system alerts Manage alert settings
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Full-Verification parameters

Last Updated:2024-06-11 07:36:13  Updated
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Parameter Default value Description Applicable version
limitator.platform.threads.number The default value is subject to resource configurations for full verification. The number of data source read threads to be verified. The number of read threads at the source and that at the destination are subject to the limitator.platform.threads.number and limitator.source.max.thread.size parameters. The calculation logic is as follows:
  1. The default value of limitator.source.max.thread.size is 6.
  2. The initial number of read threads for the source/destination is limitator.platform.threads.number/2.
  3. The smaller one of the preceding two values is used as the number of read threads.
For example, if the value of limitator.platform.threads.number is 10, each of the source and destination has five read threads. If the value of limitator.platform.threads.number is 14, each of the source and destination has six read threads.
All versions
limitator.platform.split.threads.number 16 The number of splitting threads to be verified. All versions
limitator.select.batch.max 600 The maximum number of records of each split part. In the case of table splitting based on the primary key (PK) or unique key (UK), the value is the accurate number of records processed in each split part.

Note

We recommend that you do not modify this parameter unless a splitting performance bottleneck occurs.

All versions
limitator.reviewer.rounds.max 20 The number of reverification rounds.

Note

If you want to quickly obtain data inconsistencies or in a confirmed data inconsistency scenario, you can set the value of this parameter to 0 to directly output the data comparison results without reverification.

All versions
limitator.reviewer.review.batch.max 100 The number of inconsistent unique keys to be verified by each reverification task. All versions
limitator.review.query.batch.limit 100 The number of unique keys queried at the source/destination at a time in reverification scenarios. This parameter is used in combination with limitator.reviewer.review.batch.max. For example, if limitator.reviewer.review.batch.max is set to 100 and limitator.review.query.batch.limit is set to 50, one reverification task needs to reverify 100 unique keys in total and can query 50 unique keys at the source/destination each time. Therefore, the reverification task will access the database twice. Versions later than oboms-verifier-2.0.0-xxx
filter.verify.rectify.type no Indicates whether to correct inconsistent data. Valid values:
  • no: specifies not to correct inconsistent data detected.
  • now: specifies to immediately correct inconsistent data detected.

Notice

  • It is prohibited to set this parameter to now unless in emergency scenarios. If you need to set this parameter to now, contact OceanBase Migration Service (OMS) Technical Support for confirmation.
  • Automatic correction is supported in versions later than oboms-verifier-2.0.0-xxx but not supported in oboms-verifier-1.xxx for migration between MySQL tenants of OceanBase Database or migration from a MySQL database to a MySQL tenant of OceanBase Database.
All versions
filter.verify.inmod.tables N/A Specifies to verify tables by using the inmode mechanism. OMS Community Edition supports general verification and inmode verification. The two verification modes differ in the method used by the destination to read data. In inmode verification, the destination does not read data based on the split range. Instead, the destination calculates primary key values based on the data read by the source from a split part, and then reads data based on the primary key values.

Notice

The inmode verification is inapplicable if the destination has data that does exist at the source, and will downgrade the verification performance.

Here are some examples of general scenarios:
  • Specify to use inmode verification for all tables of the current project: filter.verify.inmod.tables=.*;.*;.*
  • Specify to use inmode verification for the T1 table in the D1 database: filter.verify.inmod.tables = D1;T1;.*
  • Specify to use inmode verification for the T1 and T2 tables in the D1 database: filter.verify.inmod.tables = D1;T1;.*\|D1;T2;.*
  • Specify to use inmode verification for the T1 and T2 tables in the D1 database and the T3 and T4 tables in the D2 database: filter.verify.inmod.tables = D1;T1;.*\|D1;T2;.*\|D2;T3;.*\|D2;T4;.*
All versions
limitator.table.diff.max 10000 The maximum number of data inconsistencies allowed for each table. If the number of data inconsistencies in a table exceeds this value, Full-Verification marks the table as an abnormal one and will not verify the remaining data.

Notice

We recommend that you do not set this parameter to a value greater than 10 million.

All versions
limitator.ready.verify.record.queue.size 64 The size of data to be verified. Versions later than oboms-verifier-2.0.0-xxx
limitator.ready.rectify.record.queue.size 64 The size of data to be corrected. Versions later than oboms-verifier-2.0.0-xxx
limitator.sink.slice.queue.size 64 The size of the splitting queue at the destination. Versions later than oboms-verifier-2.0.0-xxx
task.coordinatorSection.reviewTaskQueueSize 64 The size of the reverification task queue. Versions later than oboms-verifier-2.0.0-xxx
limitator.verify.thread.size 8 The number of verification threads. Versions later than oboms-verifier-2.0.0-xxx
limitator.review.thread.size 16 The number of reverification threads. Versions later than oboms-verifier-2.0.0-xxx
limitator.rectify.thread.size 32 The number of correction threads. Versions later than oboms-verifier-2.0.0-xxx
limitator.slice.split.batch.size N/A The number of unique keys concatenated in a single IN query at the destination. Versions later than oboms-verifier-1.0.23-20230904200300

The applicable versions in the preceding table are versions of Full-Verification. You can perform the following steps to query the current Full-Verification version of OMS Community Edition:

  1. Log on to the server where OMS Community Edition is deployed.

  2. Run the following command to enter the Docker container:

    docker exec -it ${CONTAINER_NAME} bash
    

    Notice

    CONTAINER_NAME specifies the name of the container.

  3. Run the following command to query the version of Full-Verification:

    rpm -qa | grep "verifier"
    

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