org.apache.hudi.org.apache.hadoop.hbase.RegionMetrics Maven / Gradle / Ivy
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* Copyright The Apache Software Foundation
*
* 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;
import java.util.Map;
import org.apache.hadoop.hbase.client.CompactionState;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.yetus.audience.InterfaceAudience;
/**
* Encapsulates per-region load metrics.
*/
@InterfaceAudience.Public
public interface RegionMetrics {
/**
* @return the region name
*/
byte[] getRegionName();
/**
* @return the number of stores
*/
int getStoreCount();
/**
* @return the number of storefiles
*/
int getStoreFileCount();
/**
* @return the total size of the storefiles
*/
Size getStoreFileSize();
/**
* @return the memstore size
*/
Size getMemStoreSize();
/**
* @return the number of read requests made to region
*/
long getReadRequestCount();
/**
* @return the number of write requests made to region
*/
long getWriteRequestCount();
/**
* @return the number of write requests and read requests made to region
*/
default long getRequestCount() {
return getReadRequestCount() + getWriteRequestCount();
}
/**
* @return the region name as a string
*/
default String getNameAsString() {
return Bytes.toStringBinary(getRegionName());
}
/**
* @return the number of filtered read requests made to region
*/
long getFilteredReadRequestCount();
/**
* TODO: why we pass the same value to different counters? Currently, the value from
* getStoreFileIndexSize() is same with getStoreFileRootLevelIndexSize()
* see HRegionServer#createRegionLoad.
* @return The current total size of root-level indexes for the region
*/
Size getStoreFileIndexSize();
/**
* @return The current total size of root-level indexes for the region
*/
Size getStoreFileRootLevelIndexSize();
/**
* @return The total size of all index blocks, not just the root level
*/
Size getStoreFileUncompressedDataIndexSize();
/**
* @return The total size of all Bloom filter blocks, not just loaded into the block cache
*/
Size getBloomFilterSize();
/**
* @return the total number of cells in current compaction
*/
long getCompactingCellCount();
/**
* @return the number of already compacted kvs in current compaction
*/
long getCompactedCellCount();
/**
* This does not really belong inside RegionLoad but its being done in the name of expediency.
* @return the completed sequence Id for the region
*/
long getCompletedSequenceId();
/**
* @return completed sequence id per store.
*/
Map getStoreSequenceId();
/**
* @return the uncompressed size of the storefiles
*/
Size getUncompressedStoreFileSize();
/**
* @return the data locality of region in the regionserver.
*/
float getDataLocality();
/**
* @return the timestamp of the oldest hfile for any store of this region.
*/
long getLastMajorCompactionTimestamp();
/**
* @return the reference count for the stores of this region
*/
int getStoreRefCount();
/**
* @return the max reference count for any store file among all compacted stores files
* of this region
*/
int getMaxCompactedStoreFileRefCount();
/**
* Different from dataLocality,this metric's numerator only include the data stored on ssd
* @return the data locality for ssd of region in the regionserver
*/
float getDataLocalityForSsd();
/**
* @return the data at local weight of this region in the regionserver
*/
long getBlocksLocalWeight();
/**
* Different from blocksLocalWeight,this metric's numerator only include the data stored on ssd
* @return the data at local with ssd weight of this region in the regionserver
*/
long getBlocksLocalWithSsdWeight();
/**
* @return the block total weight of this region
*/
long getBlocksTotalWeight();
/**
* @return the compaction state of this region
*/
CompactionState getCompactionState();
}