Verify Shard

A shard can be verified for integrity issues by using the following command:

GET /{application}/_verify/{shard}

The command returns an error only if the application name is unknown. Otherwise, it returns a 200 OK is returned regardless of whether the given shard exists or not. If the shard does exist, a background task is launched to check the integrity of the shard’s data segments. Depending on the size of the shard, this may take a while. The results of the verification can be found by examining the Doradus server’s log file. A typical result is shown below:

16:53:12,887 INFO CheckDatabase: Checking shard S1

16:53:12,901 INFO CheckDatabase: Successfully checked 0 segments

If errors are detected, the results should be interpreted by someone familiar with Doradus OLAP internals.