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          • Restoring DBService Metadata - MapReduce Service

            Restoring DBService Metadata - MapReduce Service

            OBS: indicates that backup files are stored in OBS.

            Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Data Backup and Restoration > Restoring MRS Cluster Component Data
          • Restoring HBase Metadata - MapReduce Service

            Restoring HBase Metadata - MapReduce Service

            OBS: indicates that backup files are stored in OBS.

            Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Data Backup and Restoration > Restoring MRS Cluster Component Data
          • Restoring Kafka Metadata - MapReduce Service

            Restoring Kafka Metadata - MapReduce Service

            OBS: indicates that backup files are stored in OBS.

            Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Data Backup and Restoration > Restoring MRS Cluster Component Data
          • Managing Loader Links (Versions Earlier Than MRS 3.x) - MapReduce Service

            Managing Loader Links (Versions Earlier Than MRS 3.x) - MapReduce Service

            If a message displays indicating that OBS server cannot be connected, repeat 3. Click Save. If a Loader job has integrated into a Loader link, editing the link parameters may affect Loader running. Deleting a Link On the Loader page, click Manage links.

            Help > MapReduce Service > Component Operation Guide (Normal) > Using Loader
          • Migrating MySQL Data to MRS Hive with CDM - MapReduce Service

            Migrating MySQL Data to MRS Hive with CDM - MapReduce Service

            A user with only the Manager_tenant or Manager_auditor permission cannot create links. cdm Password Password used for logging in to MRS Manager - OBS storage support The server must support OBS storage. When creating a Hive table, you can store the table in OBS.

            Help > MapReduce Service > Best Practices > Data Migration
          • Migrating HDFS Data from a Self-Built Cluster to an MRS Cluster with DistCp - MapReduce Service

            Migrating HDFS Data from a Self-Built Cluster to an MRS Cluster with DistCp - MapReduce Service

            Notes and Constraints If the migration destination is an OBS bucket, DistCp does not support incremental migration because OBS does not support snapshots. You need to learn about the customer's services and communicate with the customer to determine the migration time window.

            Help > MapReduce Service > Best Practices > Data Migration
          • ALM-45452 ClickHouse's Local Disk Space Is Below the Cold-Hot Separation Threshold - MapReduce Service

            ALM-45452 ClickHouse's Local Disk Space Is Below the Cold-Hot Separation Threshold - MapReduce Service

            Impact on the System Some hot data on the local disk is moved to OBS, affecting the read and write performance of the system. Possible Causes The local disk capacity configured for cold-hot separation on the ClickHouseServer node is too small.

            Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Alarm Handling Reference
          • ALM-45741 Failed to Call the ECS securitykey API - MapReduce Service

            ALM-45741 Failed to Call the ECS securitykey API - MapReduce Service

            As a result, OBS cannot be accessed. Possible Causes No ECS agency is bound to the cluster. An underlying interface of ECS is abnormal. Handling Procedure Check whether an agency is bound to the cluster. Log in to the MRS console.

            Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Alarm Handling Reference
          • ALM-12054 Invalid Certificate File - MapReduce Service

            ALM-12054 Invalid Certificate File - MapReduce Service

            Related Information For details about how to handle an expired OBS certificate, see OBS Certificate in a Cluster Expired. Parent Topic: MRS Cluster Alarm Handling Reference

            Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Alarm Handling Reference
          • ALM-45736 Guardian Service Unavailable - MapReduce Service

            ALM-45736 Guardian Service Unavailable - MapReduce Service

            Impact on the System Guardian cannot work properly, and OBS cannot be accessed. Possible Causes The HDFS service on which the Guardian service depends is abnormal. The TokenServer role instance is abnormal. Handling Procedure Check the HDFS service status.

            Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Alarm Handling Reference
          • Data Protection Technologies - MapReduce Service

            Data Protection Technologies - MapReduce Service

            Data Backup and Disaster Recovery Disaster recovery (DR): MRS supports data backup to Huawei Cloud OBS and offers cross-region high reliability.

            Help > MapReduce Service > Service Overview > Security
          • Submitting a SQL Statement - MapReduce Service

            Submitting a SQL Statement - MapReduce Service

            { "id" : "20190909_011820_00151_xxxxx", "statement" : "show tables", "status" : "FINISHED", "result_location" : " obs://my_bucket/uuid_date/xxxx.csv", "content" : [ [ "t1", null ], [ null, "t2" ], [ null, "t3" ] ] } Status code: 400 Failed to submit the SQL statement.

            Help > MapReduce Service > API Reference > API V2 > SQL APIs
          • Restoring HDFS NameNode Metadata - MapReduce Service

            Restoring HDFS NameNode Metadata - MapReduce Service

            OBS: indicates that backup files are stored in OBS.

            Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Data Backup and Restoration > Restoring MRS Cluster Component Data
          • Managing Loader Jobs - MapReduce Service

            Managing Loader Jobs - MapReduce Service

            If the value of From is a connector of a file type, for example, SFTP, FTP, OBS, and HDFS files, the value of Field Mapping is the first row of data in the file. Ensure that the first row of data is complete.

            Help > MapReduce Service > Component Operation Guide (Normal) > Using Loader
          • MRS 1.9.2.2 Patch Description - MapReduce Service

            MRS 1.9.2.2 Patch Description - MapReduce Service

            Upgraded the OBS packages. Upgraded the JDK version. Resolved the issue of ResourceManager memory leakage. Added the monitoring on the exception that occurs when the ECS getSecuritykey API is called. Optimized the temporary AK/SK process.

            Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Patch Description
          • Videos - MapReduce Service

            Videos - MapReduce Service

            Using Hive to Access OBS 08:25 Configure MRS cluster for compute and storage separation and use Hive to access OBS. Using the HBase Client 03:57 Use the cluster client to connect to HBase and create a table.

            Help > MapReduce Service > Videos
          • Using Macro Definitions in Configuration Items - MapReduce Service

            Using Macro Definitions in Configuration Items - MapReduce Service

            For example, HDFSor OBS directories do not support special characters.

            Help > MapReduce Service > Component Operation Guide (Normal) > Using Loader > Operator Help
          • MRS 1.9.2.2 Patch Description - MapReduce Service

            MRS 1.9.2.2 Patch Description - MapReduce Service

            Upgraded the OBS packages. Upgraded the JDK version. Resolved the issue of ResourceManager memory leakage. Added the monitoring on the exception that occurs when the ECS getSecuritykey API is called. Optimized the temporary AK/SK process.

            Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Patch Description
          • ALM-12057 Metadata Not Configured with the Task to Periodically Back Up Data to a Third-Party Server - MapReduce Service

            ALM-12057 Metadata Not Configured with the Task to Periodically Back Up Data to a Third-Party Server - MapReduce Service

            Back up data to a third-party server, for example, remote HDFS (RemoteHDFS), NAS (NFS/CIFS), Object Storage Service (OBS), and SFTP server (SFTP). For details, see Backing Up Data.

            Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Alarm Handling Reference
          • Using Macro Definitions in Configuration Items - MapReduce Service

            Using Macro Definitions in Configuration Items - MapReduce Service

            For example, HDFSor OBS directories do not support special characters.

            Help > MapReduce Service > Component Operation Guide (LTS) > Using Loader > Loader Operator Help
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