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

Class OMAllocateBlockRequest

java.lang.Object
org.apache.hadoop.ozone.om.request.OMClientRequest
org.apache.hadoop.ozone.om.request.key.OMKeyRequest
org.apache.hadoop.ozone.om.request.key.OMAllocateBlockRequest
All Implemented Interfaces:
RequestAuditor
Direct Known Subclasses:
OMAllocateBlockRequestWithFSO
public class OMAllocateBlockRequest extends OMKeyRequest
Handles allocate block request.

  • Constructor Details

    • OMAllocateBlockRequest

      public OMAllocateBlockRequest(org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.OMRequest omRequest, org.apache.hadoop.ozone.om.helpers.BucketLayout bucketLayout)

  • 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.

    • disallowAllocateBlockWithECReplicationConfig

      public static org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.OMRequest disallowAllocateBlockWithECReplicationConfig(org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.OMRequest req, ValidationContext ctx) throws org.apache.hadoop.ozone.om.exceptions.OMException
      Throws:
      org.apache.hadoop.ozone.om.exceptions.OMException

    • blockAllocateBlockWithBucketLayoutFromOldClient

      public static org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.OMRequest blockAllocateBlockWithBucketLayoutFromOldClient(org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.OMRequest req, ValidationContext ctx) throws IOException
      Validates block allocation requests. We do not want to allow older clients to create block allocation requests for keys that are present in buckets which use non LEGACY layouts.
      Parameters:
      req - - the request to validate
      ctx - - the validation context
      Returns:
      the validated request
      Throws:
      org.apache.hadoop.ozone.om.exceptions.OMException - if the request is invalid
      IOException