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MongoDB查詢字段沒有創(chuàng)建索引導(dǎo)致的連接超時(shí)異常解案例分享
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今天在現(xiàn)場(chǎng)的哥們發(fā)來異常，讓我解決，錯(cuò)誤信息如下：

復(fù)制代碼 代碼如下:

HTTP Status 500 - Read operation to server 192.168.1.110:20001 failed on database wpdb; nested exception is com.mongodb.MongoException$Network: Read operation to server 192.168.1.110:20001 failed on database wpdb
 
--------------------------------------------------------------------------------
 
type Exception report
 
message Read operation to server 192.168.1.110:20001 failed on database wpdb; nested exception is com.mongodb.MongoException$Network: Read operation to server 192.168.1.110:20001 failed on database wpdb
 
description The server encountered an internal error that prevented it from fulfilling this request.
 
exception
 
org.springframework.dao.DataAccessResourceFailureException: Read operation to server 192.168.1.110:20001 failed on database wpdb; nested exception is com.mongodb.MongoException$Network: Read operation to server 192.168.1.110:20001 failed on database wpdb
    org.springframework.data.mongodb.core.MongoExceptionTranslator.translateExceptionIfPossible(MongoExceptionTranslator.java:56)
    org.springframework.data.mongodb.core.MongoTemplate.potentiallyConvertRuntimeException(MongoTemplate.java:1913)
    org.springframework.data.mongodb.core.MongoTemplate.executeFindOneInternal(MongoTemplate.java:1743)
    org.springframework.data.mongodb.core.MongoTemplate.doFindOne(MongoTemplate.java:1557)
    org.springframework.data.mongodb.core.MongoTemplate.findOne(MongoTemplate.java:497)
    com.geoway.ime.tile.dao.impl.TileDaoImpl.getTile(TileDaoImpl.java:60)
    com.geoway.ime.tile.service.impl.TileServiceImpl.getTile(TileServiceImpl.java:105)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    java.lang.reflect.Method.invoke(Method.java:597)
    org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
    org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
    org.springframework.cache.interceptor.CacheInterceptor$1.invoke(CacheInterceptor.java:58)
    org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:211)
    org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:66)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
    com.sun.proxy.$Proxy50.getTile(Unknown Source)
    com.geoway.ime.server.rest.TileServer.getTileKVP(TileServer.java:60)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    java.lang.reflect.Method.invoke(Method.java:597)
    com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
    com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
    com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
    com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)
    com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
    com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
    com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1511)
    com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1442)
    com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1391)
    com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1381)
    com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
    com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
    com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)
 
 
root cause
 
com.mongodb.MongoException$Network: Read operation to server 192.168.1.110:20001 failed on database wpdb
    com.mongodb.DBTCPConnector.innerCall(DBTCPConnector.java:308)
    com.mongodb.DBTCPConnector.call(DBTCPConnector.java:279)
    com.mongodb.DBCollectionImpl.find(DBCollectionImpl.java:84)
    com.mongodb.DBCollectionImpl.find(DBCollectionImpl.java:66)
    com.mongodb.DBCollection.findOne(DBCollection.java:870)
    com.mongodb.DBCollection.findOne(DBCollection.java:844)
    com.mongodb.DBCollection.findOne(DBCollection.java:790)
    org.springframework.data.mongodb.core.MongoTemplate$FindOneCallback.doInCollection(MongoTemplate.java:1980)
    org.springframework.data.mongodb.core.MongoTemplate$FindOneCallback.doInCollection(MongoTemplate.java:1965)
    org.springframework.data.mongodb.core.MongoTemplate.executeFindOneInternal(MongoTemplate.java:1739)
    org.springframework.data.mongodb.core.MongoTemplate.doFindOne(MongoTemplate.java:1557)
    org.springframework.data.mongodb.core.MongoTemplate.findOne(MongoTemplate.java:497)
    com.geoway.ime.tile.dao.impl.TileDaoImpl.getTile(TileDaoImpl.java:60)
    com.geoway.ime.tile.service.impl.TileServiceImpl.getTile(TileServiceImpl.java:105)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    java.lang.reflect.Method.invoke(Method.java:597)
    org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
    org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
    org.springframework.cache.interceptor.CacheInterceptor$1.invoke(CacheInterceptor.java:58)
    org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:211)
    org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:66)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
    com.sun.proxy.$Proxy50.getTile(Unknown Source)
    com.geoway.ime.server.rest.TileServer.getTileKVP(TileServer.java:60)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    java.lang.reflect.Method.invoke(Method.java:597)
    com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
    com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
    com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
    com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)
    com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
    com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
    com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1511)
    com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1442)
    com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1391)
    com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1381)
    com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
    com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
    com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)
 
 
root cause
 
java.net.SocketTimeoutException: Read timed out
    java.net.SocketInputStream.socketRead0(Native Method)
    java.net.SocketInputStream.read(SocketInputStream.java:129)
    java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
    java.io.BufferedInputStream.read1(BufferedInputStream.java:258)
    java.io.BufferedInputStream.read(BufferedInputStream.java:317)
    org.bson.io.Bits.readFully(Bits.java:48)
    org.bson.io.Bits.readFully(Bits.java:35)
    org.bson.io.Bits.readFully(Bits.java:30)
    com.mongodb.Response.init>(Response.java:42)
    com.mongodb.DBPort$1.execute(DBPort.java:141)
    com.mongodb.DBPort$1.execute(DBPort.java:135)
    com.mongodb.DBPort.doOperation(DBPort.java:164)
    com.mongodb.DBPort.call(DBPort.java:135)
    com.mongodb.DBTCPConnector.innerCall(DBTCPConnector.java:300)
    com.mongodb.DBTCPConnector.call(DBTCPConnector.java:279)
    com.mongodb.DBCollectionImpl.find(DBCollectionImpl.java:84)
    com.mongodb.DBCollectionImpl.find(DBCollectionImpl.java:66)
    com.mongodb.DBCollection.findOne(DBCollection.java:870)
    com.mongodb.DBCollection.findOne(DBCollection.java:844)
    com.mongodb.DBCollection.findOne(DBCollection.java:790)
    org.springframework.data.mongodb.core.MongoTemplate$FindOneCallback.doInCollection(MongoTemplate.java:1980)
    org.springframework.data.mongodb.core.MongoTemplate$FindOneCallback.doInCollection(MongoTemplate.java:1965)
    org.springframework.data.mongodb.core.MongoTemplate.executeFindOneInternal(MongoTemplate.java:1739)
    org.springframework.data.mongodb.core.MongoTemplate.doFindOne(MongoTemplate.java:1557)
    org.springframework.data.mongodb.core.MongoTemplate.findOne(MongoTemplate.java:497)
    com.geoway.ime.tile.dao.impl.TileDaoImpl.getTile(TileDaoImpl.java:60)
    com.geoway.ime.tile.service.impl.TileServiceImpl.getTile(TileServiceImpl.java:105)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    java.lang.reflect.Method.invoke(Method.java:597)
    org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
    org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
    org.springframework.cache.interceptor.CacheInterceptor$1.invoke(CacheInterceptor.java:58)
    org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:211)
    org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:66)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
    com.sun.proxy.$Proxy50.getTile(Unknown Source)
    com.geoway.ime.server.rest.TileServer.getTileKVP(TileServer.java:60)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    java.lang.reflect.Method.invoke(Method.java:597)
    com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
    com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
    com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
    com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)
    com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
    com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
    com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1511)
    com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1442)
    com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1391)
    com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1381)
    com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
    com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
    com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)
 
 
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.41 logs.

由異常來看，是由于MongoDB連接超時(shí)造成的。于是，往MongoDB上找原因。首先上MongoDB的配置文件：

復(fù)制代碼 代碼如下:

mongodb.replica-set=192.98.12.242:30007,192.98.12.245:30007
mongodb.hostname=192.98.12.245
mongodb.port=30007
mongodb.connections-per-host=1000
mongodb.threads-allowed-to-block-for-connection-multiplier=200
mongodb.connect-timeout=2000
mongodb.max-wait-time=2000
mongodb.auto-connect-retry=true
mongodb.socket-keep-alive=true
mongodb.socket-timeout=1500
mongodb.slave-ok=true
mongodb.write-number=1
mongodb.write-timeout=1000
mongodb.write-fsync=true
mongodb.dbname=shardvectordb
mongodb.dbuser=
mongodb.dbpassword=

連接時(shí)間2秒。然后在定位mongodb的查詢，結(jié)果為6、7秒。原來是這個(gè)原因。然后定位，一個(gè)查詢?yōu)槭裁春臅r(shí)那么久呢？

經(jīng)過排查，原來是查詢字段沒有創(chuàng)建索引。然后把索引創(chuàng)建，查詢幾十毫秒，ok問題全部解決。

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