| /** |
| * |
| * 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.Collections; |
| import java.util.Map; |
| import java.util.stream.Collectors; |
| |
| import org.apache.hadoop.hbase.client.RegionInfo; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| @InterfaceAudience.Public |
| public final class CacheEvictionStats { |
| |
| private final long evictedBlocks; |
| private final long maxCacheSize; |
| private final Map<byte[], Throwable> exceptions; |
| |
| CacheEvictionStats(CacheEvictionStatsBuilder builder) { |
| this.evictedBlocks = builder.evictedBlocks; |
| this.maxCacheSize = builder.maxCacheSize; |
| this.exceptions = builder.exceptions; |
| } |
| |
| public long getEvictedBlocks() { |
| return evictedBlocks; |
| } |
| |
| public long getMaxCacheSize() { |
| return maxCacheSize; |
| } |
| |
| public Map<byte[], Throwable> getExceptions() { |
| return Collections.unmodifiableMap(exceptions); |
| } |
| |
| public int getExceptionCount() { |
| return exceptions.size(); |
| } |
| |
| private String getFailedRegions() { |
| return exceptions.keySet().stream() |
| .map(regionName -> RegionInfo.prettyPrint(RegionInfo.encodeRegionName(regionName))) |
| .collect(Collectors.toList()) |
| .toString(); |
| } |
| |
| @InterfaceAudience.Private |
| public static CacheEvictionStatsBuilder builder() { |
| return new CacheEvictionStatsBuilder(); |
| } |
| |
| @Override |
| public String toString() { |
| return "CacheEvictionStats{" + |
| "evictedBlocks=" + evictedBlocks + |
| ", maxCacheSize=" + maxCacheSize + |
| ", failedRegionsSize=" + getExceptionCount() + |
| ", failedRegions=" + getFailedRegions() + |
| '}'; |
| } |
| } |