| /* |
| * 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.regionserver; |
| |
| import org.apache.hadoop.hbase.HBaseInterfaceAudience; |
| import org.apache.hadoop.hbase.procedure2.util.StringUtils; |
| import org.apache.yetus.audience.InterfaceAudience; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * A {@link FlushPolicy} that only flushes store larger a given threshold. If no store is large |
| * enough, then all stores will be flushed. |
| */ |
| @InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG) |
| public abstract class FlushLargeStoresPolicy extends FlushPolicy { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(FlushLargeStoresPolicy.class); |
| |
| public static final String HREGION_COLUMNFAMILY_FLUSH_SIZE_LOWER_BOUND = |
| "hbase.hregion.percolumnfamilyflush.size.lower.bound"; |
| |
| public static final String HREGION_COLUMNFAMILY_FLUSH_SIZE_LOWER_BOUND_MIN = |
| "hbase.hregion.percolumnfamilyflush.size.lower.bound.min"; |
| |
| public static final long DEFAULT_HREGION_COLUMNFAMILY_FLUSH_SIZE_LOWER_BOUND_MIN = |
| 1024 * 1024 * 16L; |
| |
| protected long flushSizeLowerBound = -1; |
| |
| protected void setFlushSizeLowerBounds(HRegion region) { |
| int familyNumber = region.getTableDescriptor().getColumnFamilyCount(); |
| // For multiple families, lower bound is the "average flush size" by default |
| // unless setting in configuration is larger. |
| flushSizeLowerBound = region.getMemStoreFlushSize() / familyNumber; |
| long minimumLowerBound = |
| getConf().getLong(HREGION_COLUMNFAMILY_FLUSH_SIZE_LOWER_BOUND_MIN, |
| DEFAULT_HREGION_COLUMNFAMILY_FLUSH_SIZE_LOWER_BOUND_MIN); |
| if (minimumLowerBound > flushSizeLowerBound) { |
| flushSizeLowerBound = minimumLowerBound; |
| } |
| // use the setting in table description if any |
| String flushedSizeLowerBoundString = |
| region.getTableDescriptor().getValue(HREGION_COLUMNFAMILY_FLUSH_SIZE_LOWER_BOUND); |
| if (flushedSizeLowerBoundString == null) { |
| LOG.debug("No {} set in table {} descriptor;" |
| + "using region.getMemStoreFlushHeapSize/# of families ({}) " |
| + "instead." |
| , HREGION_COLUMNFAMILY_FLUSH_SIZE_LOWER_BOUND |
| , region.getTableDescriptor().getTableName() |
| , StringUtils.humanSize(flushSizeLowerBound) |
| + ")"); |
| } else { |
| try { |
| flushSizeLowerBound = Long.parseLong(flushedSizeLowerBoundString); |
| } catch (NumberFormatException nfe) { |
| // fall back for fault setting |
| LOG.warn("Number format exception parsing {} for table {}: {}, {}; " |
| + "using region.getMemStoreFlushHeapSize/# of families ({}) " |
| + "and region.getMemStoreFlushOffHeapSize/# of families ({}) " |
| + "instead." |
| , HREGION_COLUMNFAMILY_FLUSH_SIZE_LOWER_BOUND |
| , region.getTableDescriptor().getTableName() |
| , flushedSizeLowerBoundString |
| , nfe |
| , flushSizeLowerBound |
| ); |
| |
| } |
| } |
| } |
| |
| protected boolean shouldFlush(HStore store) { |
| if (store.getMemStoreSize().getHeapSize() |
| + store.getMemStoreSize().getOffHeapSize() > this.flushSizeLowerBound) { |
| LOG.debug("Flush {} of {}; " |
| + "heap memstoreSize={} +" |
| + "off heap memstoreSize={} > memstore lowerBound={}" |
| , store.getColumnFamilyName() |
| , region.getRegionInfo().getEncodedName() |
| , store.getMemStoreSize().getHeapSize() |
| , store.getMemStoreSize().getOffHeapSize() |
| , this.flushSizeLowerBound |
| ); |
| return true; |
| } |
| return false; |
| } |
| } |