| /** |
| * |
| * 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.io.OutputStream; |
| import java.io.PrintStream; |
| import java.io.PrintWriter; |
| import java.util.Date; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.ipc.CallQueueInfo; |
| import org.apache.hadoop.hbase.monitoring.StateDumpServlet; |
| import org.apache.hadoop.hbase.monitoring.TaskMonitor; |
| import org.apache.hadoop.hbase.util.LogMonitoring; |
| import org.apache.hadoop.hbase.util.Threads; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| @InterfaceAudience.Private |
| public class RSDumpServlet extends StateDumpServlet { |
| private static final long serialVersionUID = 1L; |
| private static final String LINE = |
| "==========================================================="; |
| |
| @Override |
| public void doGet(HttpServletRequest request, HttpServletResponse response) |
| throws IOException { |
| HRegionServer hrs = (HRegionServer)getServletContext().getAttribute( |
| HRegionServer.REGIONSERVER); |
| assert hrs != null : "No RS in context!"; |
| |
| response.setContentType("text/plain"); |
| |
| if (!hrs.isOnline()) { |
| response.getWriter().write("The RegionServer is initializing!"); |
| response.getWriter().close(); |
| return; |
| } |
| |
| OutputStream os = response.getOutputStream(); |
| try (PrintWriter out = new PrintWriter(os)) { |
| |
| out.println("RegionServer status for " + hrs.getServerName() |
| + " as of " + new Date()); |
| |
| out.println("\n\nVersion Info:"); |
| out.println(LINE); |
| dumpVersionInfo(out); |
| |
| out.println("\n\nTasks:"); |
| out.println(LINE); |
| TaskMonitor.get().dumpAsText(out); |
| |
| out.println("\n\nRowLocks:"); |
| out.println(LINE); |
| dumpRowLock(hrs, out); |
| |
| out.println("\n\nExecutors:"); |
| out.println(LINE); |
| dumpExecutors(hrs.getExecutorService(), out); |
| |
| out.println("\n\nStacks:"); |
| out.println(LINE); |
| PrintStream ps = new PrintStream(response.getOutputStream(), false, "UTF-8"); |
| Threads.printThreadInfo(ps, ""); |
| ps.flush(); |
| |
| out.println("\n\nRS Configuration:"); |
| out.println(LINE); |
| Configuration conf = hrs.getConfiguration(); |
| out.flush(); |
| conf.writeXml(os); |
| os.flush(); |
| |
| out.println("\n\nLogs"); |
| out.println(LINE); |
| long tailKb = getTailKbParam(request); |
| LogMonitoring.dumpTailOfLogs(out, tailKb); |
| |
| out.println("\n\nRS Queue:"); |
| out.println(LINE); |
| if (isShowQueueDump(conf)) { |
| dumpQueue(hrs, out); |
| } |
| |
| out.println("\n\nCall Queue Summary:"); |
| out.println(LINE); |
| dumpCallQueues(hrs, out); |
| |
| out.flush(); |
| } |
| } |
| |
| public static void dumpRowLock(HRegionServer hrs, PrintWriter out) { |
| StringBuilder sb = new StringBuilder(); |
| for (Region region : hrs.getRegions()) { |
| HRegion hRegion = (HRegion)region; |
| if (hRegion.getLockedRows().size() > 0) { |
| for (HRegion.RowLockContext rowLockContext : hRegion.getLockedRows().values()) { |
| sb.setLength(0); |
| sb.append(hRegion.getTableDescriptor().getTableName()).append(",") |
| .append(hRegion.getRegionInfo().getEncodedName()).append(","); |
| sb.append(rowLockContext.toString()); |
| out.println(sb.toString()); |
| } |
| } |
| } |
| } |
| |
| public static void dumpQueue(HRegionServer hrs, PrintWriter out) { |
| final CompactSplit compactSplit = hrs.getCompactSplitThread(); |
| if (compactSplit != null) { |
| // 1. Print out Compaction/Split Queue |
| out.println("Compaction/Split Queue summary: " + compactSplit); |
| out.println(compactSplit.dumpQueue()); |
| } |
| |
| final MemStoreFlusher memStoreFlusher = hrs.getMemStoreFlusher(); |
| if (memStoreFlusher != null) { |
| // 2. Print out flush Queue |
| out.println(); |
| out.println("Flush Queue summary: " + memStoreFlusher); |
| out.println(memStoreFlusher.dumpQueue()); |
| } |
| } |
| |
| |
| public static void dumpCallQueues(HRegionServer hrs, PrintWriter out) { |
| CallQueueInfo callQueueInfo = hrs.rpcServices.rpcServer.getScheduler().getCallQueueInfo(); |
| |
| for(String queueName: callQueueInfo.getCallQueueNames()) { |
| |
| out.println("\nQueue Name: " + queueName); |
| |
| long totalCallCount = 0L, totalCallSize = 0L; |
| for (String methodName: callQueueInfo.getCalledMethodNames(queueName)) { |
| long thisMethodCount, thisMethodSize; |
| thisMethodCount = callQueueInfo.getCallMethodCount(queueName, methodName); |
| thisMethodSize = callQueueInfo.getCallMethodSize(queueName, methodName); |
| |
| out.println("Method in call: "+methodName); |
| out.println("Total call count for method: "+thisMethodCount); |
| out.println("Total call size for method (bytes): "+thisMethodSize); |
| |
| totalCallCount += thisMethodCount; |
| totalCallSize += thisMethodSize; |
| } |
| out.println("Total call count for queue: "+totalCallCount); |
| out.println("Total call size for queue (bytes): "+totalCallSize); |
| } |
| |
| } |
| |
| } |