org.apache.hadoop.hbase.CacheEvictionStats Maven / Gradle / Ivy
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* 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 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 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() + '}';
}
}