Cloudera Docs

Viewing Replication History

You can view historical details about replication jobs on the Replication History page.

To view the history of a replication job:

  1. From Cloudera Manager > select Replication.

    The list of available replication policies are displayed.

  2. Locate the row for the job, select the same, and click icon. Select Show History.

    The Replication History page is displayed with the job information.

Figure 1. Replication History Screen (HDFS)
Figure 2. Replication History Screen (Hive, Failed Replication)

Replication History Table

The Replication History page displays a table of previously run replication jobs with the following columns:

Column Description
Start Time Time when the replication job started.
Expand the display and show details of the replication. In this screen, you can:
  • Click the View link to open the Command Details page, which displays details and messages about each step in the execution of the command. Expand the display for a Step to:
    • View the actual command string.
    • View the Start time and duration of the command.
    • Click the Context link to view the service status page relevant to the command.
    • Select one of the tabs to view the Role Log, stdout, and stderr for the command.

    See Viewing Running and Recent Commands.

  • Click Collect Diagnostic Data to open the Send Diagnostic Data screen, which allows you to collect replication-specific diagnostic data for this run of the schedule:
  • (HDFS only) Link to view details on the MapReduce Job used for the replication. See .
  • (Dry Run only) View the number of Replicable Files. Displays the number of files that would be replicated during an actual replication.
  • (Dry Run only) View the number of Replicable Bytes. Displays the number of bytes that would be replicated during an actual replication.
  • Link to download a CSV file containing a Replication Report. This file lists the databases and tables that were replicated.
  • View the number of Errors that occurred during the replication.
  • View the number of Impala UDFs replicated. (Displays only for Hive/Impala replications where Replicate Impala Metadata is selected.)
  • Click the link to download a CSV file containing a Download Listing. This file lists the files and directories that were replicated.
  • Click the link to download a CSV file containing Download Status.
  • If a user was specified in the Run As Username field when creating the replication job, the selected user displays.
  • View messages returned from the replication job.
Duration Amount of time the replication job took to complete.
Outcome Indicates success or failure of the replication job.
Files Expected Number of files expected to be copied, based on the parameters of the replication schedule.
Files Copied Number of files actually copied during the replication.
Tables (Hive only) Number of tables replicated.
Files Failed Number of files that failed to be copied during the replication.
Files Deleted Number of files that were deleted during the replication.
Files Skipped Number of files skipped during the replication. The replication process skips files that already exist in the destination and have not changed.