In the last two or three days, a website deployed on our tomcat service found a thread deadlock issue.After troubleshooting and analysis the JVM thread dump,we found a large thread blocks in work thread and this problem may be caused by ehcache. However, I believe that the usage of our ehcache is correct, can anyone help me to analyze the reasons?
The code and configuration of our program, log and other information is as follows,Thanks:
version：ehcache 2.10.3 ehcache-core 2.6.11 shiro-ehcache 1.2.4
src code:
@Service
public class UserBuslinesService {
@Resource
UserBuslinesDao userbuslinesDao;
public List<UserBuslines> find(Map paraMap) {
return userbuslinesDao.find(paraMap);
}
@Cacheable(value={"UserBuslines"}, key = "#map")
public List<UserBuslines> select(Map map) {
List<UserBuslines> oList = userbuslinesDao.select(map);
return oList;
}
public List<UserBuslines> selectAll(Map map) {
List<UserBuslines> oList = userbuslinesDao.selectAll(map);
return oList;
}
public UserBuslines get(Serializable id) {
return userbuslinesDao.get(id);
}
@CacheEvict(value={"UserBuslines", "CarInfoTree"}, allEntries=true)
public void insert(UserBuslines entity) {
userbuslinesDao.insert(entity);
}
@CacheEvict(value={"UserBuslines", "CarInfoTree"}, allEntries=true)
public void update(UserBuslines entity) {
userbuslinesDao.update(entity);
}
@CacheEvict(value={"UserBuslines", "CarInfoTree"}, allEntries=true)
public void deleteById(Serializable id) {
userbuslinesDao.deleteById(id);
}
@CacheEvict(value={"UserBuslines", "CarInfoTree"}, allEntries=true)
public void deleteByIds(Map paraMap) {
userbuslinesDao.deleteByIds(paraMap);
}
@CacheEvict(value={"UserBuslines", "CarInfoTree"}, allEntries=true)
public void delete(Serializable[] ids) {
userbuslinesDao.delete(ids);
}
}
-----------------------------------------------------------------------------------
@ResponseBody
@RequestMapping(value = "/SelectLastestGpsData", method = RequestMethod.POST)
public Map<String, Object> SelectLastestGpsData(Integer[] firstCorp, Integer[] corpIdList, Integer[] buslineIdList, String[] simNoList, HttpSession session) {
List<LastestGpsData> lastestGpsDataList;
List<CarInfoTree> carInfoTreeList = new ArrayList<>();
Map<String, Object> key = new HashMap<String, Object>() {
{
put("platforms", Arrays.asList(platform.replaceAll(" ", "").split(",")));
}
};
Object cacheByCarTree = EhcacheUtil.getInstance().get("CarInfoTree", key);
if (cacheByCarTree != null) {
carInfoTreeList = (List<CarInfoTree>) cacheByCarTree;
}
Map<String, Object> queryUserBuslinesMap = new HashMap<>();
queryUserBuslinesMap.put("userId", session.getAttribute("UserId"));
List<UserBuslines> userBuslinesList = userBuslinesService.select(queryUserBuslinesMap);
List<CarInfoTree> targetCarInfoList = carInfoTreeList
.stream()
.filter(
e -> (firstCorp != null && Arrays.asList(firstCorp).contains(e.getParentId())) ||
(corpIdList != null && Arrays.asList(corpIdList).contains(e.getCorpId())) ||
(buslineIdList != null && Arrays.asList(buslineIdList).contains(e.getBuslineId())) ||
(simNoList != null && Arrays.asList(simNoList).contains(e.getSimNo()))
).filter(car -> userBuslinesList.stream().anyMatch(ub -> ub.getBuslineId() == car.getBuslineId()))
.collect(Collectors.toList());
lastestGpsDataList = selectLastestGpsData(targetCarInfoList);
Map<String, Object> result = new HashMap<>();
result.put("rows", lastestGpsDataList);
if(lastestGpsDataList.size()>0){
//EhcacheUtil.getInstance().put("gnssData", session.getAttribute("UserId"), lastestGpsDataList);
storageHashMap.put(session.getAttribute("UserId"), lastestGpsDataList);
}
return result;
}
thread dump:
"http-nio-6600-exec-189" #25494 daemon prio=5 os_prio=0 tid=0x0000000020336000 nid=0x1f40 waiting for monitor entry [0x000000002eecd000]
java.lang.Thread.State: BLOCKED (on object monitor)
at net.sf.ehcache.store.cachingtier.OnHeapCachingTier$Fault.get(OnHeapCachingTier.java:331)
- waiting to lock <0x000000008b5e3bc8> (a net.sf.ehcache.store.cachingtier.OnHeapCachingTier$Fault)
at net.sf.ehcache.store.cachingtier.OnHeapCachingTier$Fault.access$200(OnHeapCachingTier.java:311)
at net.sf.ehcache.store.cachingtier.OnHeapCachingTier.getValue(OnHeapCachingTier.java:299)
at net.sf.ehcache.store.cachingtier.OnHeapCachingTier.get(OnHeapCachingTier.java:199)
at net.sf.ehcache.store.CacheStore.get(CacheStore.java:192)
at net.sf.ehcache.Cache.get(Cache.java:1751)
at org.springframework.cache.ehcache.EhCacheCache.get(EhCacheCache.java:65)
at org.springframework.cache.interceptor.AbstractCacheInvoker.doGet(AbstractCacheInvoker.java:68)
at org.springframework.cache.interceptor.CacheAspectSupport.findInCaches(CacheAspectSupport.java:469)
at org.springframework.cache.interceptor.CacheAspectSupport.findCachedItem(CacheAspectSupport.java:435)
at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:336)
at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:302)
at org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:61)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:654)
at com.xmgnss.service.UserBuslinesService$$EnhancerBySpringCGLIB$$d0f3eb42.select(<generated>)
at com.xmgnss.controller.LastestGpsDataController.SelectLastestGpsData(LastestGpsDataController.java:294
at sun.reflect.GeneratedMethodAccessor380.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:222)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:814)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:737)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at com.xmgnss.filter.XssFilter.doFilter(XssFilter.java:28)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:798)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1434)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
- locked <0x000000008c40c870> (a org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Locked ownable synchronizers:
- <0x000000008b6443a0> (a java.util.concurrent.ThreadPoolExecutor$Worker)
- waiting to lock <0x000000008b5e3bc8> (a net.sf.ehcache.store.cachingtier.OnHeapCachingTier$Fault)
- waiting to lock <0x000000008b5e3bc8> (a net.sf.ehcache.store.cachingtier.OnHeapCachingTier$Fault)
- waiting to lock <0x000000008b5e3bc8> (a net.sf.ehcache.store.cachingtier.OnHeapCachingTier$Fault)
- waiting to lock <0x000000008b5e3bc8> (a net.sf.ehcache.store.cachingtier.OnHeapCachingTier$Fault)
- waiting to lock <0x000000008b5e3bc8> (a net.sf.ehcache.store.cachingtier.OnHeapCachingTier$Fault)
- waiting to lock <0x000000008b5e3bc8> (a net.sf.ehcache.store.cachingtier.OnHeapCachingTier$Fault)
- waiting to lock <0x000000008b5e3bc8> (a net.sf.ehcache.store.cachingtier.OnHeapCachingTier$Fault)
- locked <0x000000008b5e3bc8> (a net.sf.ehcache.store.cachingtier.OnHeapCachingTier$Fault)
- waiting to lock <0x000000008b5e3bc8> (a net.sf.ehcache.store.cachingtier.OnHeapCachingTier$Fault)
- waiting to lock <0x000000008b5e3bc8> (a net.sf.ehcache.store.cachingtier.OnHeapCachingTier$Fault)
Line 3187: java.lang.Thread.State: BLOCKED (on object monitor)
Line 3274: java.lang.Thread.State: BLOCKED (on object monitor)
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<ehcache>
<diskStore path="D:/xiaoyuchuan/cache" />
<defaultCache
maxElementsInMemory="1000"
eternal="false"
timeToIdleSeconds="120"
timeToLiveSeconds="120"
overflowToDisk="false"/>
<cache name="CarInfoTree"
maxElementsOnDisk="0"
maxElementsInMemory="20000"
eternal="true"
overflowToDisk="true"
diskPersistent="true"/>
<cache name="UserBuslines"
maxElementsOnDisk="20000"
maxElementsInMemory="2000"
eternal="true"
overflowToDisk="true"
diskPersistent="true"/>
<cache name="gnssData"
maxElementsOnDisk="0"
maxElementsInMemory="2000"
eternal="true"
overflowToDisk="true"
diskPersistent="true"/>
</ehcache>
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