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          • Selecting an API Type - MapReduce Service

            Selecting an API Type - MapReduce Service

            a Data Connection 60 requests/minute Version Metadata Query Obtaining MRS Versions 1000 requests/minute Querying Available Specifications of an MRS Cluster Version 1000 requests/minute IAM Synchronization Management Obtaining Synchronized IAM Users and User Groups 1000 requests/minute

            Help > MapReduce Service > API Reference
          • Terminating a Job - MapReduce Service

            Terminating a Job - MapReduce Service

            IAM users have been synchronized. On the Overview tab page of the cluster details page, click Click to synchronize on the right of IAM User Sync to synchronize IAM users. The job-related programs and input files have been stored in OBS. In this example, a MapReduce job is added.

            Help > MapReduce Service > API Reference > Application Cases
          • Task Execution Fails Because of Stack Memory Overflow - MapReduce Service

            Task Execution Fails Because of Stack Memory Overflow - MapReduce Service

            If the Components tab is unavailable, complete IAM user synchronization first. (On the Dashboard page, click Synchronize on the right side of IAM User Sync to synchronize IAM users.) For MRS 3.x or later: Log in to FusionInsight Manager and choose Cluster.

            Help > MapReduce Service > Troubleshooting > Using Hive
          • Some Instances Fail to Be Started After Core Nodes Are Added to the MRS Cluster - MapReduce Service

            Some Instances Fail to Be Started After Core Nodes Are Added to the MRS Cluster - MapReduce Service

            On the Dashboard tab, click Synchronize next to IAM User Sync to synchronize IAM users. Click Components and check the role status of each service. If a role is not started, select the role, click More, and select Start Instance to start the instance.

            Help > MapReduce Service > Troubleshooting > Cluster Management
          • How Do I Handle Abnormal Status of Core Nodes in an MRS Cluster After Successful Expansion? - MapReduce Service

            How Do I Handle Abnormal Status of Core Nodes in an MRS Cluster After Successful Expansion? - MapReduce Service

            On the Dashboard tab, click Synchronize next to IAM User Sync to synchronize IAM users. Click Components and check the role status of each service. If a role is not started, select the role, click More, and select Start Instance to start the instance.

            Help > MapReduce Service > User Guide > Configuring Storage-Compute Decoupling for an MRS Cluster > FAQ About Decoupled Storage and Compute
          • Starting and Stopping an MRS Cluster Component - MapReduce Service

            Starting and Stopping an MRS Cluster Component - MapReduce Service

            Prerequisites The IAM users have been synchronized in advance. You can do this by clicking Synchronize next to IAM User Sync on the Dashboard page of the cluster details. You have logged in to MRS Manager. For how to log in, see Accessing MRS Manager.

            Help > MapReduce Service > User Guide > Managing Clusters > Managing MRS Cluster Components
          • How Do I Do If an Error Indicating Invalid Authentication Is Reported When I Submit an MRS Cluster Purchase Order? - MapReduce Service

            How Do I Do If an Error Indicating Invalid Authentication Is Reported When I Submit an MRS Cluster Purchase Order? - MapReduce Service

            The alarm information is as follows: IAM users have not been assigned the mrs:cluster:create permission in the fine-grained policy. IAM users on the customer side belong to multiple user groups, and different default MRS policies are assigned to these user groups.

            Help > MapReduce Service > FAQs > Cluster Creation
          • Accessing the Hue Web UI - MapReduce Service

            Accessing the Hue Web UI - MapReduce Service

            If the Components tab is unavailable, complete IAM user synchronization first. (On the Dashboard page, click Synchronize on the right side of IAM User Sync to synchronize IAM users.) Select Hue.

            Help > MapReduce Service > Component Operation Guide (Normal) > Using Hue (Versions Earlier Than MRS 3.x)
          • Accessing the Storm Web UI - MapReduce Service

            Accessing the Storm Web UI - MapReduce Service

            If the Components tab is unavailable, complete IAM user synchronization first. (On the Dashboard page, click Synchronize on the right side of IAM User Sync to synchronize IAM users.) For MRS 3.x or later, log in to FusionInsight Manager.

            Help > MapReduce Service > Component Operation Guide (Normal) > Using Storm
          • Allowing Only the Hive Administrator to Create Databases and Tables in the Default Database - MapReduce Service

            Allowing Only the Hive Administrator to Create Databases and Tables in the Default Database - MapReduce Service

            If the Components tab is unavailable, complete IAM user synchronization first. (On the Dashboard page, click Synchronize on the right side of IAM User Sync to synchronize IAM users.) For MRS 3.x or later, log in to FusionInsight Manager.

            Help > MapReduce Service > Component Operation Guide (Normal) > Using Hive > Enterprise-Class Enhancement of Hive
          • Configuring Hive to Support More Than 32 Roles - MapReduce Service

            Configuring Hive to Support More Than 32 Roles - MapReduce Service

            If the Components tab is unavailable, complete IAM user synchronization first. (On the Dashboard page, click Synchronize on the right side of IAM User Sync to synchronize IAM users.) For MRS 3.x or later, log in to FusionInsight Manager.

            Help > MapReduce Service > Component Operation Guide (Normal) > Using Hive > Enterprise-Class Enhancement of Hive
          • Invalid Hyperlink of Events on the Storm UI - MapReduce Service

            Invalid Hyperlink of Events on the Storm UI - MapReduce Service

            If the Components tab is unavailable, complete IAM user synchronization first. (On the Dashboard page, click Synchronize on the right side of IAM User Sync to synchronize IAM users.) For MRS 3.x or later: Log in to FusionInsight Manager and choose Cluster.

            Help > MapReduce Service > Troubleshooting > Using Storm
          • Failed to Import HBase Data Due to Oversized File Blocks - MapReduce Service

            Failed to Import HBase Data Due to Oversized File Blocks - MapReduce Service

            If the Components tab is unavailable, complete IAM user synchronization first. (On the Dashboard page, click Synchronize on the right side of IAM User Sync to synchronize IAM users.) For MRS 3.x or later: Log in to FusionInsight Manager and choose Cluster.

            Help > MapReduce Service > Troubleshooting > Using HBase
          • Starting and Stopping All Roles on an MRS Cluster Node - MapReduce Service

            Starting and Stopping All Roles on an MRS Cluster Node - MapReduce Service

            Prerequisites The IAM users have been synchronized in advance. You can do this by clicking Synchronize next to IAM User Sync on the Dashboard page of the cluster details. You have logged in to MRS Manager. For how to log in, see Accessing MRS Manager.

            Help > MapReduce Service > User Guide > Managing Clusters > Managing MRS Cluster Nodes
          • Creating a Job - MapReduce Service

            Creating a Job - MapReduce Service

            IAM users have been synchronized. On the Overview tab page of the cluster details page, click Click to synchronize on the right of IAM User Sync to synchronize IAM users. The job-related programs and input files have been stored in OBS. In this example, a MapReduce job is added.

            Help > MapReduce Service > API Reference > Application Cases
          • Viewing Kafka Topic Information - MapReduce Service

            Viewing Kafka Topic Information - MapReduce Service

            If the Components tab is unavailable, complete IAM user synchronization first. (On the Dashboard page, click Synchronize on the right side of IAM User Sync to synchronize IAM users.) For MRS 3.x or later, log in to FusionInsight Manager.

            Help > MapReduce Service > Component Operation Guide (Normal) > Using Kafka > Managing Kafka Topics
          • Enabling Inter-Cluster Copy to Back Up Data - MapReduce Service

            Enabling Inter-Cluster Copy to Back Up Data - MapReduce Service

            If the Components tab is unavailable, complete IAM user synchronization first. (On the Dashboard page, click Synchronize on the right side of IAM User Sync to synchronize IAM users.) In the navigation pane, choose Yarn > Distcp.

            Help > MapReduce Service > Component Operation Guide (Normal) > Using HBase > HBase O&M Management
          • How Do I Configure Multiple Hive Connections for Presto? - MapReduce Service

            How Do I Configure Multiple Hive Connections for Presto? - MapReduce Service

            If the Components tab is unavailable, complete IAM user synchronization first. (On the Dashboard page, click Synchronize on the right side of IAM User Sync to synchronize IAM users.)

            Help > MapReduce Service > Component Operation Guide (Normal) > Using Presto > Presto FAQ
          • Before You Start - MapReduce Service

            Before You Start - MapReduce Service

            For security purposes, do not directly use the account to perform routine management but create IAM users and grant them permissions for routine management. User An IAM user is created using an account to use cloud services.

            Help > MapReduce Service > API Reference
          • MRS Job Introduction - MapReduce Service

            MRS Job Introduction - MapReduce Service

            Whether a synchronized IAM user has the permission to submit jobs depends on the IAM policy associated with the user during IAM synchronization. For details about the job submission policy, see Table 1 in Synchronizing IAM Users to MRS.

            Help > MapReduce Service > User Guide > Submitting an MRS Job
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