本文整理汇总了Java中org.apache.hadoop.hbase.RegionLocations.isEmpty方法的典型用法代码示例。如果您正苦于以下问题：Java RegionLocations.isEmpty方法的具体用法？Java RegionLocations.isEmpty怎么用？Java RegionLocations.isEmpty使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.hbase.RegionLocations的用法示例。
在下文中一共展示了RegionLocations.isEmpty方法的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: clearCache
import org.apache.hadoop.hbase.RegionLocations; //导入方法依赖的package包/类
/**
* Delete a cached location, no matter what it is. Called when we were told to not use cache.
* @param tableName tableName
* @param row
*/
public void clearCache(final TableName tableName, final byte [] row, int replicaId) {
ConcurrentMap<byte[], RegionLocations> tableLocations = getTableLocations(tableName);
boolean removed = false;
RegionLocations regionLocations = getCachedLocation(tableName, row);
if (regionLocations != null) {
HRegionLocation toBeRemoved = regionLocations.getRegionLocation(replicaId);
RegionLocations updatedLocations = regionLocations.remove(replicaId);
if (updatedLocations != regionLocations) {
byte[] startKey = regionLocations.getRegionLocation().getRegionInfo().getStartKey();
if (updatedLocations.isEmpty()) {
removed = tableLocations.remove(startKey, regionLocations);
} else {
removed = tableLocations.replace(startKey, regionLocations, updatedLocations);
}
}
if (removed && LOG.isTraceEnabled() && toBeRemoved != null) {
LOG.trace("Removed " + toBeRemoved + " from cache");
}
}
}
示例2: clearCache
import org.apache.hadoop.hbase.RegionLocations; //导入方法依赖的package包/类
/**
* Deletes the cached location of the region if necessary, based on some error from source.
* @param hri The region in question.
*/
public void clearCache(RegionInfo hri) {
ConcurrentMap<byte[], RegionLocations> tableLocations = getTableLocations(hri.getTable());
RegionLocations regionLocations = tableLocations.get(hri.getStartKey());
if (regionLocations != null) {
HRegionLocation oldLocation = regionLocations.getRegionLocation(hri.getReplicaId());
if (oldLocation == null) return;
RegionLocations updatedLocations = regionLocations.remove(oldLocation);
boolean removed;
if (updatedLocations != regionLocations) {
if (updatedLocations.isEmpty()) {
removed = tableLocations.remove(hri.getStartKey(), regionLocations);
} else {
removed = tableLocations.replace(hri.getStartKey(), regionLocations, updatedLocations);
}
if (removed) {
if (metrics != null) {
metrics.incrMetaCacheNumClearRegion();
}
if (LOG.isTraceEnabled()) {
LOG.trace("Removed " + oldLocation + " from cache");
}
}
}
}
}