import org.apache.hadoop.hbase.regionserver.metrics.OperationMetrics; //导入依赖的package包/类
/**
 * Should only be used for testing purposes
 */
public HRegion() {
  this.tableDir = null;
  this.blockingMemStoreSize = 0L;
  this.conf = null;
  this.rowLockWaitDuration = DEFAULT_ROWLOCK_WAIT_DURATION;
  this.rsServices = null;
  this.baseConf = null;
  this.fs = null;
  this.timestampSlop = HConstants.LATEST_TIMESTAMP;
  this.memstoreFlushSize = 0L;
  this.log = null;
  this.regiondir = null;
  this.regionInfo = null;
  this.htableDescriptor = null;
  this.threadWakeFrequency = 0L;
  this.coprocessorHost = null;
  this.scannerReadPoints = new ConcurrentHashMap<RegionScanner, Long>();
  this.opMetrics = new OperationMetrics();

  this.maxBusyWaitDuration = 2 * HConstants.DEFAULT_HBASE_RPC_TIMEOUT;
  this.busyWaitDuration = DEFAULT_BUSY_WAIT_DURATION;
  this.maxBusyWaitMultiplier = 2;
  this.deferredLogSyncDisabled = false;
}
 

import org.apache.hadoop.hbase.regionserver.metrics.OperationMetrics; //导入依赖的package包/类
/**
 * Should only be used for testing purposes
 */
public HRegion(){
  this.tableDir = null;
  this.blockingMemStoreSize = 0L;
  this.conf = null;
  this.rowLockWaitDuration = DEFAULT_ROWLOCK_WAIT_DURATION;
  this.rsServices = null;
  this.baseConf = null;
  this.fs = null;
  this.timestampSlop = HConstants.LATEST_TIMESTAMP;
  this.memstoreFlushSize = 0L;
  this.log = null;
  this.regiondir = null;
  this.regionInfo = null;
  this.htableDescriptor = null;
  this.threadWakeFrequency = 0L;
  this.coprocessorHost = null;
  this.scannerReadPoints = new ConcurrentHashMap<RegionScanner, Long>();
  this.opMetrics = new OperationMetrics();

  this.maxBusyWaitDuration = 2 * HConstants.DEFAULT_HBASE_RPC_TIMEOUT;
  this.busyWaitDuration = DEFAULT_BUSY_WAIT_DURATION;
  this.maxBusyWaitMultiplier = 2;
  this.deferredLogSyncDisabled = false;
}