| /** |
| * 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.client.metrics; |
| |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| |
| /** |
| * Provides metrics related to scan operations (both server side and client side metrics). |
| * <p> |
| * The data can be passed to mapreduce framework or other systems. |
| * We use atomic longs so that one thread can increment, |
| * while another atomically resets to zero after the values are reported |
| * to hadoop's counters. |
| * <p> |
| * Some of these metrics are general for any client operation such as put |
| * However, there is no need for this. So they are defined under scan operation |
| * for now. |
| */ |
| @InterfaceAudience.Public |
| public class ScanMetrics extends ServerSideScanMetrics { |
| |
| // AtomicLongs to hold the metrics values. These are all updated through ClientScanner and |
| // ScannerCallable. They are atomic longs so that atomic getAndSet can be used to reset the |
| // values after progress is passed to hadoop's counters. |
| |
| public static final String RPC_CALLS_METRIC_NAME = "RPC_CALLS"; |
| public static final String REMOTE_RPC_CALLS_METRIC_NAME = "REMOTE_RPC_CALLS"; |
| public static final String MILLIS_BETWEEN_NEXTS_METRIC_NAME = "MILLIS_BETWEEN_NEXTS"; |
| public static final String NOT_SERVING_REGION_EXCEPTION_METRIC_NAME = "NOT_SERVING_REGION_EXCEPTION"; |
| public static final String BYTES_IN_RESULTS_METRIC_NAME = "BYTES_IN_RESULTS"; |
| public static final String BYTES_IN_REMOTE_RESULTS_METRIC_NAME = "BYTES_IN_REMOTE_RESULTS"; |
| public static final String REGIONS_SCANNED_METRIC_NAME = "REGIONS_SCANNED"; |
| public static final String RPC_RETRIES_METRIC_NAME = "RPC_RETRIES"; |
| public static final String REMOTE_RPC_RETRIES_METRIC_NAME = "REMOTE_RPC_RETRIES"; |
| |
| /** |
| * number of RPC calls |
| */ |
| public final AtomicLong countOfRPCcalls = createCounter(RPC_CALLS_METRIC_NAME); |
| |
| /** |
| * number of remote RPC calls |
| */ |
| public final AtomicLong countOfRemoteRPCcalls = createCounter(REMOTE_RPC_CALLS_METRIC_NAME); |
| |
| /** |
| * sum of milliseconds between sequential next calls |
| */ |
| public final AtomicLong sumOfMillisSecBetweenNexts = createCounter(MILLIS_BETWEEN_NEXTS_METRIC_NAME); |
| |
| /** |
| * number of NotServingRegionException caught |
| */ |
| public final AtomicLong countOfNSRE = createCounter(NOT_SERVING_REGION_EXCEPTION_METRIC_NAME); |
| |
| /** |
| * number of bytes in Result objects from region servers |
| */ |
| public final AtomicLong countOfBytesInResults = createCounter(BYTES_IN_RESULTS_METRIC_NAME); |
| |
| /** |
| * number of bytes in Result objects from remote region servers |
| */ |
| public final AtomicLong countOfBytesInRemoteResults = createCounter(BYTES_IN_REMOTE_RESULTS_METRIC_NAME); |
| |
| /** |
| * number of regions |
| */ |
| public final AtomicLong countOfRegions = createCounter(REGIONS_SCANNED_METRIC_NAME); |
| |
| /** |
| * number of RPC retries |
| */ |
| public final AtomicLong countOfRPCRetries = createCounter(RPC_RETRIES_METRIC_NAME); |
| |
| /** |
| * number of remote RPC retries |
| */ |
| public final AtomicLong countOfRemoteRPCRetries = createCounter(REMOTE_RPC_RETRIES_METRIC_NAME); |
| |
| /** |
| * constructor |
| */ |
| public ScanMetrics() { |
| } |
| } |