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一个Flume线上问题的排查
最近在做一个分布式调用链跟踪系统,在两个地方采用了flume ,一个是宿主系统 ,用flume agent进行日志搜集。 一个是从kafka拉日志分析后写入hbase.后面这个flume(从kafka拉日志分析后写入flume)用了3台 , 系统上线以后 ,线上抛了一个这样的异常:Caused by...
分类:Web程序   时间:2015-12-23 19:44:15    阅读次数:1098
ThreadLocal & Memory Leak
PermGen exhaustionsin combination withThreadLocalare often caused byclassloader leaks.An example:Imagine an application server which has a pool ofwork...
分类:其他好文   时间:2015-12-19 07:43:19    阅读次数:126
去掉APP 的Title
去掉APP 的Title用的这句代码:requestWindowFeature(Window.FEATURE_NO_TITLE) 在Android studio中使用会报: Caused by: android.util.AndroidRuntimeException: requestFea...
分类:移动开发   时间:2015-12-18 11:50:47    阅读次数:184
Caused by: java.lang.ClassNotFoundException: javax.transaction.TransactionManager
1、错误叙述性说明usage: java org.apache.catalina.startup.Catalina [ -config {pathname} ] [ -nonaming ] { -help | start | stop }2014-7-12 14:54:49 org.apache.....
分类:编程语言   时间:2015-12-13 12:28:48    阅读次数:248
Caused by: java.lang.ClassNotFoundException: org.objectweb.asm.commons.EmptyVisitor
1、错误叙述性说明2014-7-13 1:45:53 org.apache.struts2.spring.StrutsSpringObjectFactory info信息: ... initialized Struts-Spring integration successfully2014-7-13...
分类:编程语言   时间:2015-12-12 16:52:13    阅读次数:373
Caused by: java.lang.IllegalStateException: getOutputStream() has already been called for this respo
1、错误描述Caused by: java.lang.IllegalStateException: getOutputStream() has already been called for this response at org.apache.catalina.connector.Response.getWriter(Response.java:648) at org.apache.cat...
分类:编程语言   时间:2015-12-05 07:15:33    阅读次数:155
使用druid连接池的超时回收机制排查连接泄露问题
在工程中使用了druid连接池,运行一段时间后系统出现异常:Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is...
分类:其他好文   时间:2015-11-28 18:26:50    阅读次数:301
类找不到异常 Caused by: java.lang.NoClassDefFoundError
错误原因:在部署应用的时候,服务器报错,Caused by: java.lang.ClassNotFoundException: org.quartz.impl.JobDetailImpl,某个类找不到,找到对应的包发现明明某个jar已经引进去了,在仔细一看发现有三个类似的jar,com.ali.....
分类:编程语言   时间:2015-11-25 22:15:10    阅读次数:1856
Caused by: java.lang.NoClassDefFoundError: com/tansuosoft/discoverx/common/Config
1、错误描述Caused by: java.lang.NoClassDefFoundError: com/tansuosoft/discoverx/common/Config at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:800...
分类:编程语言   时间:2015-11-22 10:01:19    阅读次数:143
Error creating bean with name 'org.springframework.validation.beanvalidation.LocalValidatorFactoryBe
Error creating bean with name ‘org.springframework.validation.beanvalidation.LocalValidatorFactoryBean#0’Caused by: javax.validation.ValidationException: Unable to create a Configuration, because no Be...
分类:编程语言   时间:2015-11-12 18:14:48    阅读次数:929
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