DLM Administration
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DLM policy parameters

Add Policy Parameters

Field Description Additional Information
Policy Name The policy name that will display in the UI Maximum length of 64 characters. Spaces, dashes, and underscores are the only special characters allowed.
Description Any useful information to identify the policy or its use
Service Hive or HDFS replication For Hive replication, a corresponding Hive database structure must exist on the destination. For HDFS, the corresponding file system structure is created when the first replication job executes.
Source Cluster The cluster that contains the data to be replicated If the cluster you want is not listed, you need to enable the cluster for DLM.
Destination Cluster The cluster to which the source data will be replicated If the cluster you want is not listed, you need to enable the cluster for DLM.
Select a Folder Path (Only if HDFS is selected) The HDFS directories available to browse and to select for replication The Infra Admin role has read privileges, in the DLM UI only, for all HDFS directories on the source and destination clusters. Clusters must be paired before you can browse HDFS directories in DLM.
Select Database (Only if Hive is selected) The internal or external databases available to browse and to select for replicated The Infra Admin role has read privileges, in the DLM UI only, for all databases on the source and destination clusters.
Enable snapshot based replication Enables snapshot replication on the selected folder if you have the required permissions When the job runs, snapshots are automatically created on the destination cluster and managed by DLM. HDFS Admin role is required to enable snapshots.
Repeat How often you want the job to run Choices are weeks, days, hours, or minutes. For a Hive replication policy, set the frequency so that changes are replicated often enough to avoid overly large copies.
Start and End Dates The dates you want the job to start (required) and end (optional) If you do not set an end date, the job runs at the set time and frequency until the job is manually cancelled.
Start Time 24-hour clock
Queue Name (Optional) The YARN queue you want to use to prioritize job scheduling across multiple tenants If no queue is entered, DLM defaults to the YARN queue identified in the Ambari View for YARN Capacity Scheduler. You can enter one queue name per policy.
Maximum Bandwidth (Optional) The maximum bandwidth to be used when running a job based on this policy Enables you to restrict the amount of data throughput to the specified value. Enter a number in megabytes per second (MBps).
Maximum Maps Sets the maximum number of map tasks (simultaneous copies) per replication job.