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        • Backing Up HDFS Service Data - MapReduce Service

          Backing Up HDFS Service Data - MapReduce Service

          When entering regular expressions, click or to add or delete an expression. If the selected table or directory is incorrect, click Clear Selected Node to deselect it. The backup directory cannot contain files that have been written for a long time.

          Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Data Backup and Restoration > Backing Up MRS Cluster Component Data
        • Backing Up Hive Service Data - MapReduce Service

          Backing Up Hive Service Data - MapReduce Service

          When entering regular expressions, click or to add or delete an expression. If the selected table or directory is incorrect, click Clear Selected Node to deselect it. Click Verify to check whether the backup task is configured correctly.

          Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Data Backup and Restoration > Backing Up MRS Cluster Component Data
        • Cold-Hot Separation Commands - MapReduce Service

          Cold-Hot Separation Commands - MapReduce Service

          If you want the system to return the entire row, you must delete the HOT_ONLY hint from the query statement or make sure that the specified time range covers the time period from when this row is inserted to when this row is last updated.

          Help > MapReduce Service > Component Operation Guide (LTS) > Using HBase > Enterprise-Class Enhancements of HBase > Configuring Hot-Cold Data Separate in HBase
        • Exporting Doris Data to HDFS - MapReduce Service

          Exporting Doris Data to HDFS - MapReduce Service

          You need to manually delete them. If the export job is successfully executed, the __doris_export_tmp_xxx directory generated in the remote storage may be retained or cleared based on the file system semantics of the remote storage.

          Help > MapReduce Service > Component Operation Guide (LTS) > Using Doris > Analyzing Doris Data
        • How Do I Connect an MRS Cluster Client to OBS Using an AK/SK Pair? - MapReduce Service

          How Do I Connect an MRS Cluster Client to OBS Using an AK/SK Pair? - MapReduce Service

          Delete such files after configuration or store them securely. Commands carrying authentication passwords pose security risks. Disable historical command recording before running such commands to prevent information leakage.

          Help > MapReduce Service > User Guide > Configuring Storage-Compute Decoupling for an MRS Cluster > FAQ About Decoupled Storage and Compute
        • Storing Cold and Hot Data Separately in Doris - MapReduce Service

          Storing Cold and Hot Data Separately in Doris - MapReduce Service

          You need to delete the dirty data. Obtain AK/SK information. Move the cursor on the username in the upper right corner, and select My Credentials from the drop-down list. On the API Credentials page, obtain the Account ID whish is used as the domain ID.

          Help > MapReduce Service > Component Operation Guide (LTS) > Using Doris > Enterprise-Class Enhancements of Doris > Doris Cold and Hot Data Separation
        • Creating a FlinkServer Job and Writing Data to a ClickHouse Table - MapReduce Service

          Creating a FlinkServer Job and Writing Data to a ClickHouse Table - MapReduce Service

          DELETE messages generated during Flink computing are filtered out when data is written to ClickHouse. Parameters for batch write: Flink stores data in the memory and then flushes the data to the database table when the trigger condition is met.

          Help > MapReduce Service > Component Operation Guide (LTS) > Using Flink > Creating a FlinkServer Job
        • HFile and WAL Encryption - MapReduce Service

          HFile and WAL Encryption - MapReduce Service

          Delete the HBase self-defined configuration item hbase.crypto.master.alternate.key.name added in 3 from FusionInsight Manager. Repeat 4 for the configuration take effect. Parent topic: MRS Cluster Security Hardening

          Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Security Configuration > MRS Cluster Security Hardening
        • Using Cascaded Agents to Collect Static Logs from Local Host to HDFS - MapReduce Service

          Using Cascaded Agents to Collect Static Logs from Local Host to HDFS - MapReduce Service

          You are advised to delete the configuration file or use other secure methods to keep the password.

          Help > MapReduce Service > Component Operation Guide (Normal) > Using Flume > Configuring an Encrypted Flume Data Collection Task
        • Storing ClickHouse Cold and Hot Data Separately - MapReduce Service

          Storing ClickHouse Cold and Hot Data Separately - MapReduce Service

          You need to delete the dirty data. Creating a Cloud Service Agency and Binding It to a Cluster Log in to the management console. In the service list, choose Management & Governance > Identity and Access Management.

          Help > MapReduce Service > Component Operation Guide (LTS) > Using ClickHouse > Enterprise-Class Enhancements of ClickHouse
        • CREATE TABLE - MapReduce Service

          CREATE TABLE - MapReduce Service

          The auto.purge parameter can be used to specify whether to clear related data when data removal operations (such as DROP, DELETE, INSERT OVERWRITE, and TRUNCATE TABLE) are performed. If it is set to true, metadata and data files are cleared.

          Help > MapReduce Service > Component Operation Guide (LTS) > Using HetuEngine > Common HetuEngine SQL Syntax > HetuEngine DDL SQL Syntax
        • Development Suggestions - MapReduce Service

          Development Suggestions - MapReduce Service

          from t1 Filter Out the Data To Be Withdrawn When Multiple Flink Jobs or INSERT INTO Statements Are Written into the Same Gauss for MySQL Database When multiple Flink jobs write data to the same MySQL table, one job sends the withdrawal data (-D and -U) to delete the entire row and

          Help > MapReduce Service > Component Development Specifications > Flink > Flink SQL Logic
        • Querying a Cluster List - MapReduce Service

          Querying a Cluster List - MapReduce Service

          clusters whose VMs fail to delete, and clusters whose database updates fail to delete. starting: Query a list of clusters that are being started. running: Query a list of running clusters. terminated: Query a list of terminated clusters. failed: Query a list of failed clusters.

          Help > MapReduce Service > API Reference > API V1.1 > Cluster Management APIs
        • Configuring HBase Active/Standby DR - MapReduce Service

          Configuring HBase Active/Standby DR - MapReduce Service

          If the value is set to 604800000 (unit: millisecond), the retention period of HLog is 7 days. hbase.master.cleaner.interval 60000 Interval for the HMaster to delete historical HLog files. The HLog that exceeds the configured period will be automatically deleted.

          Help > MapReduce Service > Component Operation Guide (Normal) > Using HBase > HBase O&M Management > Configuring HBase Cluster HA and DR
        • Interconnecting ClickHouse with HDFS (MRS 3.3.0-LTS or later) - MapReduce Service

          Interconnecting ClickHouse with HDFS (MRS 3.3.0-LTS or later) - MapReduce Service

          The HDFS engine of ClickHouse only works with files but does not create or delete directories.

          Help > MapReduce Service > Component Operation Guide (LTS) > Using ClickHouse > ClickHouse Data Import
        • Configuring HBase Active/Standby DR - MapReduce Service

          Configuring HBase Active/Standby DR - MapReduce Service

          If the value is set to 604800000 (unit: millisecond), the retention period of HLog is 7 days. hbase.master.cleaner.interval 60000 Interval for the HMaster to delete historical HLog files. The HLog that exceeds the configured period will be automatically deleted.

          Help > MapReduce Service > Component Operation Guide (LTS) > Using HBase > HBase O&M Management > Configuring HBase Cluster HA and DR
        • Configuring Alarm Thresholds for an MRS Cluster - MapReduce Service

          Configuring Alarm Thresholds for an MRS Cluster - MapReduce Service

          Threshold: 10 You can click to set multiple time ranges for the threshold or click to delete one. Click OK to save the rules. Locate the row that contains an added rule, and click Apply in the Operation column. The value of Effective for this rule changes to Yes.

          Help > MapReduce Service > User Guide > MRS Cluster O&M > Viewing and Configuring MRS Alarm Events
        • Using the Flink Client - MapReduce Service

          Using the Flink Client - MapReduce Service

          You are advised to delete the configuration file or use other secure methods to keep the password.

          Help > MapReduce Service > Component Operation Guide (Normal) > Using Flink
        • ClickHouse Overview - MapReduce Service

          ClickHouse Overview - MapReduce Service

          GRANULARITY value2 ) ENGINE = MergeTree() ORDER BY expr [PARTITION BY expr] [PRIMARY KEY expr] [SAMPLE BY expr] [TTL expr [DELETE|TO DISK 'xxx'|TO VOLUME 'xxx'], ...] [SETTINGS name=value, ...]

          Help > MapReduce Service > Component Operation Guide (LTS) > Using ClickHouse
        • ClickHouse Overview - MapReduce Service

          ClickHouse Overview - MapReduce Service

          GRANULARITY value2 ) ENGINE = MergeTree() ORDER BY expr [PARTITION BY expr] [PRIMARY KEY expr] [SAMPLE BY expr] [TTL expr [DELETE|TO DISK 'xxx'|TO VOLUME 'xxx'], ...] [SETTINGS name=value, ...]

          Help > MapReduce Service > Component Operation Guide (Normal) > Using ClickHouse
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