Package org.apache.hadoop.ozone.om.request.snapshot

Class OMSnapshotMoveTableKeysRequest

java.lang.Object
org.apache.hadoop.ozone.om.request.OMClientRequest
org.apache.hadoop.ozone.om.request.snapshot.OMSnapshotMoveTableKeysRequest
All Implemented Interfaces:
RequestAuditor
public class OMSnapshotMoveTableKeysRequest extends OMClientRequest
Handles OMSnapshotMoveTableKeysRequest Request. This is an OM internal request. Does not need @RequireSnapshotFeatureState.

  • Constructor Details

    • OMSnapshotMoveTableKeysRequest

      public OMSnapshotMoveTableKeysRequest(org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.OMRequest omRequest)

  • Method Details

    • preExecute

      public org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.OMRequest preExecute(OzoneManager ozoneManager) throws IOException
      Description copied from class: OMClientRequest
      Perform pre-execute steps on a OMRequest. Called from the RPC context, and generates a OMRequest object which has all the information that will be either persisted in RocksDB or returned to the caller once this operation is executed.
      Overrides:
      preExecute in class OMClientRequest
      Returns:
      OMRequest that will be serialized and handed off to Ratis for consensus.
      Throws:
      IOException

    • validateAndUpdateCache

      public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager, ExecutionContext context)
      Description copied from class: OMClientRequest
      Validate the OMRequest and update the cache. This step should verify that the request can be executed, perform any authorization steps and update the in-memory cache. This step does not persist the changes to the database. To coders and reviewers, CAUTION: Do NOT bring external dependencies into this method, doing so could potentially cause divergence in OM DB states in HA. If you have to, be extremely careful. e.g. Do NOT invoke ACL check inside validateAndUpdateCache, which can use Ranger plugin that relies on external DB.
      Specified by:
      validateAndUpdateCache in class OMClientRequest
      Returns:
      the response that will be returned to the client.