EungsopYoo commented on code in PR #7398: URL: https://github.com/apache/hbase/pull/7398#discussion_r2785731378
########## hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RowCacheService.java: ########## @@ -0,0 +1,83 @@ +/* + * 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 java.io.IOException; +import java.util.List; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.hbase.Cell; +import org.apache.hadoop.hbase.CellScanner; +import org.apache.hadoop.hbase.HConstants; +import org.apache.hadoop.hbase.client.CheckAndMutate; +import org.apache.hadoop.hbase.client.CheckAndMutateResult; +import org.apache.hadoop.hbase.client.Mutation; +import org.apache.hadoop.hbase.client.Result; +import org.apache.hadoop.hbase.client.Scan; +import org.apache.hadoop.hbase.io.util.MemorySizeUtil; +import org.apache.hadoop.hbase.ipc.RpcCallContext; +import org.apache.hadoop.hbase.quotas.ActivePolicyEnforcement; +import org.apache.hadoop.hbase.quotas.OperationQuota; + +import org.apache.hbase.thirdparty.com.google.protobuf.ServiceException; + +import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos; +import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.BulkLoadHFileRequest; +import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.BulkLoadHFileResponse; + +/** + * It is responsible for populating the row cache and retrieving rows from it. + */ [email protected] +public class RowCacheService { + private final boolean enabledByConf; + private final RowCache rowCache; + + RowCacheService(Configuration conf) { + enabledByConf = + conf.getFloat(HConstants.ROW_CACHE_SIZE_KEY, HConstants.ROW_CACHE_SIZE_DEFAULT) > 0; + rowCache = new RowCacheImpl(MemorySizeUtil.getRowCacheSize(conf)); + } + + OperationStatus[] batchMutate(HRegion region, Mutation[] mArray, boolean atomic, long nonceGroup, + long nonce) throws IOException { + return region.batchMutate(mArray, atomic, nonceGroup, nonce); + } + + BulkLoadHFileResponse bulkLoadHFile(RSRpcServices rsRpcServices, BulkLoadHFileRequest request) + throws ServiceException { + return rsRpcServices.bulkLoadHFileInternal(request); + } + + CheckAndMutateResult checkAndMutate(HRegion region, CheckAndMutate checkAndMutate, + long nonceGroup, long nonce) throws IOException { + return region.checkAndMutate(checkAndMutate, nonceGroup, nonce); + } + + RegionScannerImpl getScanner(HRegion region, Scan scan, List<Cell> results) throws IOException { + RegionScannerImpl scanner = region.getScanner(scan); + scanner.next(results); + return scanner; + } + + Result mutate(RSRpcServices rsRpcServices, HRegion region, ClientProtos.MutationProto mutation, + OperationQuota quota, CellScanner cellScanner, long nonceGroup, + ActivePolicyEnforcement spaceQuotaEnforcement, RpcCallContext context) throws IOException { + return rsRpcServices.mutateInternal(mutation, region, quota, cellScanner, nonceGroup, + spaceQuotaEnforcement, context); + } Review Comment: https://github.com/apache/hbase/pull/7398/changes/4707c74b8cce4da6c22e42874de03e18b0f6b35c The cyclic dependency was removed in this commit. https://github.com/apache/hbase/pull/7398/changes/74575e45825347d1b6bbb7de01376cdde26bee5e RowCacheService will contain the core row cache logic, including mechanisms such as the barriers, cache population, and cache eviction. RowCache will be a pure storage abstraction that can be swapped out with different implementations, such as TinyLFU or LRU. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
