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HBASE-25757 Addendum remove CandidateGenerator classes under hbase-server module

This commit is contained in:
Duo Zhang 2021-04-27 23:24:16 +08:00
parent 8d2a0efb7a
commit 8856f61986
2 changed files with 0 additions and 88 deletions
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34
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/RandomCandidateGenerator.java
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/*
* 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.
*/
package org.apache.hadoop.hbase.master.balancer;
import org.apache.yetus.audience.InterfaceAudience;
@InterfaceAudience.Private
class RandomCandidateGenerator extends CandidateGenerator {
@Override
BalanceAction generate(BalancerClusterState cluster) {
int thisServer = pickRandomServer(cluster);
// Pick the other server
int otherServer = pickOtherRandomServer(cluster, thisServer);
return pickRandomRegions(cluster, thisServer, otherServer);
}
}

54
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/RegionReplicaRackCandidateGenerator.java
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/*
* 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.
*/
package org.apache.hadoop.hbase.master.balancer;
import java.util.concurrent.ThreadLocalRandom;
import org.apache.yetus.audience.InterfaceAudience;
/**
* Generates candidates which moves the replicas out of the rack for co-hosted region replicas in
* the same rack
*/
@InterfaceAudience.Private
class RegionReplicaRackCandidateGenerator extends RegionReplicaCandidateGenerator {
@Override
BalanceAction generate(BalancerClusterState cluster) {
int rackIndex = pickRandomRack(cluster);
if (cluster.numRacks <= 1 || rackIndex == -1) {
return super.generate(cluster);
}
int regionIndex = selectCoHostedRegionPerGroup(cluster.primariesOfRegionsPerRack[rackIndex],
cluster.regionsPerRack[rackIndex], cluster.regionIndexToPrimaryIndex);
// if there are no pairs of region replicas co-hosted, default to random generator
if (regionIndex == -1) {
// default to randompicker
return randomGenerator.generate(cluster);
}
int serverIndex = cluster.regionIndexToServerIndex[regionIndex];
int toRackIndex = pickOtherRandomRack(cluster, rackIndex);
int rand = ThreadLocalRandom.current().nextInt(cluster.serversPerRack[toRackIndex].length);
int toServerIndex = cluster.serversPerRack[toRackIndex][rand];
int toRegionIndex = pickRandomRegion(cluster, toServerIndex, 0.9f);
return getAction(serverIndex, regionIndex, toServerIndex, toRegionIndex);
}
}