org.apache.hudi.org.apache.hadoop.hbase.master.normalizer.RegionNormalizerFactory Maven / Gradle / Ivy
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package org.apache.hadoop.hbase.master.normalizer;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.master.HMaster;
import org.apache.hadoop.hbase.zookeeper.RegionNormalizerTracker;
import org.apache.hadoop.hbase.zookeeper.ZKWatcher;
import org.apache.hadoop.util.ReflectionUtils;
import org.apache.yetus.audience.InterfaceAudience;
/**
* Factory to create instance of {@link RegionNormalizer} as configured.
*/
@InterfaceAudience.Private
public final class RegionNormalizerFactory {
private RegionNormalizerFactory() {
}
public static RegionNormalizerManager createNormalizerManager(
final Configuration conf,
final ZKWatcher zkWatcher,
final HMaster master // TODO: consolidate this down to MasterServices
) {
final RegionNormalizer regionNormalizer = getRegionNormalizer(conf);
regionNormalizer.setMasterServices(master);
final RegionNormalizerTracker tracker = new RegionNormalizerTracker(zkWatcher, master);
final RegionNormalizerChore chore =
master.isInMaintenanceMode() ? null : new RegionNormalizerChore(master);
final RegionNormalizerWorkQueue workQueue =
master.isInMaintenanceMode() ? null : new RegionNormalizerWorkQueue<>();
final RegionNormalizerWorker worker = master.isInMaintenanceMode()
? null
: new RegionNormalizerWorker(conf, master, regionNormalizer, workQueue);
return new RegionNormalizerManager(tracker, chore, workQueue, worker);
}
/**
* Create a region normalizer from the given conf.
* @param conf configuration
* @return {@link RegionNormalizer} implementation
*/
private static RegionNormalizer getRegionNormalizer(Configuration conf) {
// Create instance of Region Normalizer
Class balancerKlass =
conf.getClass(HConstants.HBASE_MASTER_NORMALIZER_CLASS, SimpleRegionNormalizer.class,
RegionNormalizer.class);
return ReflectionUtils.newInstance(balancerKlass, conf);
}
}