本文整理汇总了Java中org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementStatus类的典型用法代码示例。如果您正苦于以下问题：Java BlockPlacementStatus类的具体用法？Java BlockPlacementStatus怎么用？Java BlockPlacementStatus使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
BlockPlacementStatus类属于org.apache.hadoop.hdfs.server.blockmanagement包，在下文中一共展示了BlockPlacementStatus类的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: BlurBlockPlacementStatusDefault
import org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementStatus; //导入依赖的package包/类
public BlurBlockPlacementStatusDefault(BlockPlacementStatus original, String shardServer) {
_original = original;
_shardServer = shardServer;
if (_original != null) {
_origPlacementPolicySatisfied = _original.isPlacementPolicySatisfied();
} else {
_origPlacementPolicySatisfied = true;
}
}
示例2: runBalancerAndVerifyBlockPlacmentPolicy
import org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementStatus; //导入依赖的package包/类
private void runBalancerAndVerifyBlockPlacmentPolicy(Configuration conf,
long[] capacities, String[] hosts, String[] racks, String[] UDs,
long newCapacity, String newHost, String newRack, String newUD)
throws Exception {
int numOfDatanodes = capacities.length;
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(capacities.length)
.hosts(hosts).racks(racks).simulatedCapacities(capacities).build();
DatanodeManager dm = cluster.getNamesystem().getBlockManager().
getDatanodeManager();
if (UDs != null) {
for(int i = 0; i < UDs.length; i++) {
DatanodeID datanodeId = cluster.getDataNodes().get(i).getDatanodeId();
dm.getDatanode(datanodeId).setUpgradeDomain(UDs[i]);
}
}
try {
cluster.waitActive();
client = NameNodeProxies.createProxy(conf,
cluster.getFileSystem(0).getUri(), ClientProtocol.class).getProxy();
// fill up the cluster to be 80% full
long totalCapacity = sum(capacities);
long totalUsedSpace = totalCapacity * 8 / 10;
final long fileSize = totalUsedSpace / numOfDatanodes;
DFSTestUtil.createFile(cluster.getFileSystem(0), filePath, false, 1024,
fileSize, DEFAULT_BLOCK_SIZE, (short) numOfDatanodes, 0, false);
// start up an empty node with the same capacity on the same rack as the
// pinned host.
cluster.startDataNodes(conf, 1, true, null, new String[] { newRack },
new String[] { newHost }, new long[] { newCapacity });
if (newUD != null) {
DatanodeID newId = cluster.getDataNodes().get(
numOfDatanodes).getDatanodeId();
dm.getDatanode(newId).setUpgradeDomain(newUD);
}
totalCapacity += newCapacity;
// run balancer and validate results
waitForHeartBeat(totalUsedSpace, totalCapacity, client, cluster);
// start rebalancing
Collection<URI> namenodes = DFSUtil.getNsServiceRpcUris(conf);
Balancer.run(namenodes, BalancerParameters.DEFAULT, conf);
BlockPlacementPolicy placementPolicy =
cluster.getNamesystem().getBlockManager().getBlockPlacementPolicy();
List<LocatedBlock> locatedBlocks = client.
getBlockLocations(fileName, 0, fileSize).getLocatedBlocks();
for (LocatedBlock locatedBlock : locatedBlocks) {
BlockPlacementStatus status = placementPolicy.verifyBlockPlacement(
locatedBlock.getLocations(), numOfDatanodes);
assertTrue(status.isPlacementPolicySatisfied());
}
} finally {
cluster.shutdown();
}
}