svn merge -c 1204709 from trunk for HDFS-2520.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23-PB@1229914 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Tsz-wo Sze 2012-01-11 07:38:40 +00:00
parent 86b6f3bf76
commit 084c2848fa
2 changed files with 80 additions and 0 deletions

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@ -11,6 +11,8 @@ Release 0.23-PB - Unreleased
HDFS-2518. Add protobuf service for NamenodeProtocol. (suresh)
HDFS-2520. Add protobuf service for InterDatanodeProtocol. (suresh)
IMPROVEMENTS
HDFS-2018. Move all journal stream management code into one place.

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@ -0,0 +1,78 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// This file contains protocol buffers that are used throughout HDFS -- i.e.
// by the client, server, and data transfer protocols.
option java_package = "org.apache.hadoop.hdfs.protocol.proto";
option java_outer_classname = "InterDatanodeProtocolProtos";
option java_generic_services = true;
option java_generate_equals_and_hash = true;
import "hdfs.proto";
/**
* Block with location information and new generation stamp
* to be used for recovery.
*/
message InitReplicaRecoveryRequestProto {
required RecoveringBlockProto block = 1;
}
/**
* Repica recovery information
*/
message InitReplicaRecoveryResponseProto {
required ReplicaState state = 1; // State fo the replica
required BlockProto block = 2; // block information
}
/**
* Update replica with new generation stamp and length
*/
message UpdateReplicaUnderRecoveryRequestProto {
required ExtendedBlockProto block = 1; // Block identifier
required uint64 recoveryId = 2; // New genstamp of the replica
required uint64 newLength = 3; // New length of the replica
}
/**
* Response returns updated block information
*/
message UpdateReplicaUnderRecoveryResponseProto {
required ExtendedBlockProto block = 1; // Updated block information
}
/**
* Protocol used between datanodes for block recovery.
*
* See the request and response for details of rpc call.
*/
service InterDatanodeProtocolService {
/**
* Initialize recovery of a replica
*/
rpc initReplicaRecovery(InitReplicaRecoveryRequestProto)
returns(InitReplicaRecoveryResponseProto);
/**
* Update a replica with new generation stamp and length
*/
rpc updateReplicaUnderRecovery(UpdateReplicaUnderRecoveryRequestProto)
returns(UpdateReplicaUnderRecoveryResponseProto);
}