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Constraints N/A Value range The value can contain 1 to 64 characters, including only letters, digits, underscores (_), and hyphens (-).
) Set server or option Info show (\sh ) Show server, connector, framework, connection, job, submission or option Info create (\cr ) Create connection or job Info delete (\d ) Delete connection or job Info update (\up ) Update connection or job Info clone (\cl )
Server Shared Path: indicates the configured shared directory of the NAS server. (The shared path of the server cannot be set to the root directory, and the user group and owner group of the shared path must be nobody:nobody.)
Server Shared Path: indicates the configured shared directory of the NAS server. (The shared path of the server cannot be set to the root directory, and the user group and owner group of the shared path must be nobody:nobody.)
'test1',uniqState('name1'),sumState(toInt32(200)),'2021-04-30 17:18:00'; When querying data, you need to call the corresponding functions uniqMerge and sumMerge. select name1,name2,uniqMerge(name3),sumMerge(name4) from test_table group by name1,name2; ┌─name1─┬─name2─┬─uniqMerge(name3
) Set server or option Info show (\sh ) Show server, connector, framework, connection, job, submission or option Info create (\cr ) Create connection or job Info delete (\d ) Delete connection or job Info update (\up ) Update connection or job Info clone (\cl )
Server Shared Path: indicates the configured shared directory of the NAS server. (The shared path of the server cannot be set to the root directory, and the user group and owner group of the shared path must be nobody:nobody.)
Blob server: The Blob server on the JobManager node is used to receive JAR files uploaded by users on the client, send JAR files to TaskManager, and transfer log files. The configuration items include ports, SSL, retries, and concurrency.
'test1',uniqState('name1'),sumState(toInt32(200)),'2021-04-30 17:18:00'; When querying data, you need to call the corresponding functions uniqMerge and sumMerge. select name1,name2,uniqMerge(name3),sumMerge(name4) from test_table group by name1,name2; ┌─name1─┬─name2─┬─uniqMerge(name3
A minimum value of 50 ms is recommended. 200 ms spark.streaming.receiver.maxRate Indicates the maximum rate (number of records per second) for each receiver to receive data.
For example, if the client installation directory is /opt/client, log in to the node where the client is installed as the client installation user. cd /opt/client source bigdata_env kinit developuser Run the following command to connect to the ClickHouse server: clickhouse client
For MRS 3.x and later, data can be backed up to local disks (LocalDir), local HDFS (LocalHDFS), remote HDFS (RemoteHDFS), NAS (NFS/CIFS), Object Storage Service (OBS), and SFTP server (SFTP). For details, see Backing Up MRS Cluster Component Data.
Find the host name and IP address of NameNode(hacluster,active). Figure 1 HDFS instance Click Service Configuration to access the page displayed in Figure 2. Find namenode.http.port (9870) and namenode.https.port (9871).
In the navigation pane, choose BE(Role) > Customization. Add the custom parameter enable_feature_binlog to the custom parameter file be.conf and set the parameter value to true. Click Save to save the settings.
)/GC Time (DataNode) Indicates the Garbage collection (GC) duration of NameNodes per minute. 12000 ms GC Time Indicates the GC duration of DataNodes per minute. 12000 ms Hive HQL Percentage of HQL Statements That Are Executed Successfully by Hive Indicates the percentage of HQL statements
For details about how to deploy the MgC Agent, see Deploying the MgC Agent (Formerly Edge).
