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        • Interconnecting Doris with the Hive Data Source - MapReduce Service

          Interconnecting Doris with the Hive Data Source - MapReduce Service

          Log in to the OBS management console, click Parallel File System, click the name of the OBS parallel file system where the Hive table resides, and view the value of Endpoint on the overview page.

          Help > MapReduce Service > Component Operation Guide (LTS) > Using Doris > Enterprise-Class Enhancements of Doris > Configuring Multi-Source Data for Doris
        • Using Hive to Load HDFS Data and Analyze Book Scores - MapReduce Service

          Using Hive to Load HDFS Data and Analyze Book Scores - MapReduce Service

          OBS Path: Select the name of the created OBS parallel file system, find the book_score.txt file, select I confirm that the selected script is secure, and I understand the potential risks and accept the possible exceptions or impacts on the cluster, and click OK.

          Help > MapReduce Service > Best Practices > Data Analytics
        • Using CarbonData from Scratch - MapReduce Service

          Using CarbonData from Scratch - MapReduce Service

          You can upload the files to OBS and import them from OBS to HDFS on the Files page of the MRS console. For details, see Importing and Exporting Data.

          Help > MapReduce Service > Component Operation Guide (Normal) > Using CarbonData (for Versions Earlier Than MRS 3.x)
        • Overview - MapReduce Service

          Overview - MapReduce Service

          When importing data from a relational database to HDFS or OBS, you do not need to configure data conversion. Data is separated by commas (,) and saved to HDFS or OBS. When exporting data from HDFS or OBS to a relational database, you do not need to configure data conversion.

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

          Loader Operator Description - MapReduce Service

          When importing data from a relational database to HDFS or OBS, you do not need to configure data conversion. Data is separated by commas (,) and saved to HDFS or OBS. When exporting data from HDFS or OBS to a relational database, you do not need to configure data conversion.

          Help > MapReduce Service > Component Operation Guide (LTS) > Using Loader > Loader Operator Help
        • ALM-12054 Invalid Certificate File (For MRS 2.x or Earlier) - MapReduce Service

          ALM-12054 Invalid Certificate File (For MRS 2.x or Earlier) - MapReduce Service

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

          Help > MapReduce Service > User Guide > MRS Cluster O&M > MRS Cluster Alarm Handling Reference
        • ALM-12055 Certificate File Is About to Expire (For MRS 2.x or Earlier) - MapReduce Service

          ALM-12055 Certificate File Is About to Expire (For MRS 2.x or Earlier) - MapReduce Service

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

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

          MRS Cluster Alarm Handling Reference - MapReduce Service

          ALM-45179 Number of Failed OBS readFully API Calls Exceeds the Threshold ALM-45180 Number of Failed OBS read API Calls Exceeds the Threshold ALM-45181 Number of Failed OBS write API Calls Exceeds the Threshold ALM-45182 Number of Throttled OBS Operations Exceeds the Threshold ALM

          Help > MapReduce Service > User Guide > MRS Cluster O&M
        • Common Issues About Hive - MapReduce Service

          Common Issues About Hive - MapReduce Service

          Why Is the OBS Quick Deletion Directory Not Applied After Being Added to the Custom Hive Configuration? Hive Configuration Problems Parent topic: Using Hive

          Help > MapReduce Service > Component Operation Guide (Normal) > Using Hive
        • Failed to Load Data to a Hive Table Across File Systems by Running SQL Statements Using Spark Shell - MapReduce Service

          Failed to Load Data to a Hive Table Across File Systems by Running SQL Statements Using Spark Shell - MapReduce Service

          Cause Analysis When the load command is used to import data to the Hive table across file systems (for example, the original data is stored in the HDFS but the Hive table data is stored in the OBS), and the file length is greater than the threshold (32 MB by default).

          Help > MapReduce Service > Troubleshooting > Using Spark
        • Information Collection Before Data Migrated to MRS - MapReduce Service

          Information Collection Before Data Migrated to MRS - MapReduce Service

          Table 3 Big data component information Component Source Cluster Version Target Cluster Version (Example: MRS 1.9.2) Description HDFS/OBS (or other file storage systems) Hadoop 2.8.3 Hadoop 2.8.3 - Hive 1.2.1 2.3.3 Database for storing metadata: MySQL HBase 1.3.1 1.3.1 - Spark 2.2.2

          Help > MapReduce Service > Best Practices > Data Migration
        • What Are the Differences and Relationships Between the MRS Management Console and MRS Manager? - MapReduce Service

          What Are the Differences and Relationships Between the MRS Management Console and MRS Manager? - MapReduce Service

          Common Operation MRS Console FusionInsight Manager Changing subnets, adding security group rules, controlling OBS permissions, managing agencies, and synchronizing IAM users Supported Not supported Adding node groups, scaling out, scaling in, and upgrading specifications Supported

          Help > MapReduce Service > FAQs > Cluster Management
        • Spark Troubleshooting - MapReduce Service

          Spark Troubleshooting - MapReduce Service

          Why Do I Fail to Create a Table in the Specified Location on OBS After Logging to spark-beeline? Spark Shuffle Exception Handling Why Cannot Common Users Log In to the Spark Client When There Are Multiple Service Scenarios in Spark?

          Help > MapReduce Service > Component Operation Guide (LTS) > Using Spark/Spark2x
        • Cluster Management - MapReduce Service

          Cluster Management - MapReduce Service

          Cluster Management Failed to Reduce Task Nodes OBS Certificate in a Cluster Expired Replacing a Disk in an MRS Cluster (Applicable to 2.x and Earlier) Replacing a Disk in an MRS Cluster (Applicable to 3.x) Failed to Execute an MRS Backup Task Inconsistency Between df and du Command

          Help > MapReduce Service > Troubleshooting
        • 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
        • 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
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