tomcat报错Error pr ocessing request,有没有大神帮忙看看...

探讨了双主机环境下使用Memcached进行Session共享时出现的错误,特别是在第二台服务器上频繁出现的服务异常问题,包括详细的错误日志和已尝试的解决方案。

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说明:
双主机用memcached做的Session,第一台不报错,第二台有时小量报错有时一报一大批,服务访问显示"服务异常";
网上找了很多方法(改字符编码,调整tomcat头部大小限制)都不起作用,重启后当时没问题,大概几个小时后又会报同样的错误。

Tomcat环境:

Server version: Apache Tomcat/8.0.32
Server built:   Feb 2 2016 19:34:53 UTC
Server number:  8.0.32.0
OS Name:        Linux
OS Version:     3.10.0-514.26.2.el7.x86_64
Architecture:   amd64
JVM Version:    1.8.0_74-b02
JVM Vendor:     Oracle Corporation

配置文件:

    <Connector port="8083" protocol="HTTP/1.1" connectionTimeout="20000"
        maxHttpHeaderSize="14194304" maxPostSize="4194304"
        redirectPort="8443" URIEncoding='UTF-8' />

报错内容:

29-Oct-2018 11:15:02.777 SEVERE [bxgdisthread-getAfficheList-8eb5aaa0f1a0417da9d4ad6e836eeb68] org.apache.coyote.http11.AbstractHttp11Processor.process Error processing request
java.lang.NullPointerException
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:571)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$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)

29-Oct-2018 11:15:02.777 SEVERE [bxgdisthread-getAfficheList-8eb5aaa0f1a0417da9d4ad6e836eeb68] org.apache.coyote.http11.AbstractHttp11Processor.endRequest Error finishing response
java.lang.NullPointerException

29-Oct-2018 11:15:14.741 SEVERE [bxgdisthread-findNotArchiveSquadsWithStuCnt-a682fbc87ef348b494dc7a3319366fd0] org.apache.coyote.http11.AbstractHttp11Processor.endRequest Error finishing response
java.lang.NullPointerException

29-Oct-2018 11:15:14.792 SEVERE [bxgdisthread-findExamsByCreatePerson-abc002f7505f44bf94984ef258349440] org.apache.coyote.http11.AbstractHttp11Processor.endRequest Error finishing response
java.lang.NullPointerException

29-Oct-2018 11:15:30.678 SEVERE [bxgdisthread-findByUserId-4187f396dc274c449a793935c02f921b] org.apache.coyote.http11.AbstractHttp11Processor.process Error processing request
java.lang.NullPointerException
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:571)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$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)

29-Oct-2018 11:15:30.678 SEVERE [bxgdisthread-findByUserId-4187f396dc274c449a793935c02f921b] org.apache.coyote.http11.AbstractHttp11Processor.endRequest Error finishing response
java.lang.NullPointerException

29-Oct-2018 11:15:34.982 SEVERE [bxgdisthread-menuRedPoint-7d3d616f3546443390a91ec2cdff0c9e] org.apache.coyote.http11.AbstractHttp11Processor.process Error processing request
java.lang.NullPointerException

29-Oct-2018 11:15:34.982 SEVERE [bxgdisthread-menuRedPoint-7d3d616f3546443390a91ec2cdff0c9e] org.apache.coyote.http11.AbstractHttp11Processor.endRequest Error finishing response
java.lang.NullPointerException

29-Oct-2018 11:15:51.891 SEVERE [bxgdisthread-menuRedPoint-99da36b292a54380a40409c3b8a181c3] org.apache.coyote.http11.AbstractHttp11Processor.process Error processing request
Error during job, obtaining debugging information... Examining task ID: task_1742126395848_0006_m_000000 (and more) from job job_174212639584 8_0006 Task with the most failures(4): ----- Task ID: task_1742126395848_0006_m_000000 URL: http://master:8088/taskdetails.jsp?jobid=job_1742126395848_0006&tipid=task_17421263958 48_0006_m_000000----- Diagnostic Messages for this Task: Error: java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException: Hiv e Runtime Error while processing row {"car_no":"AGM-111","card_no":"FIJBGBIGB","close_date":"2018-09-01 00:00:00","company_name":"地铁四号线","conn_mark":0,"deal_date":"2018-09-01 06:15:16","deal_money":0,"deal_type":"地铁入站","deal_value":0,"equ_no":"262014111","station":"上塘","dt":"20180901"} at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:163) at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54) at org.apache.hadoop.hive.ql.exec.mr.ExecMapRunner.run(ExecMapRunner.java:37) at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:465) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:349) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:174) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.jav a:1729) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:168) Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while pr ocessing row {"car_no":"AGM-111","card_no":"FIJBGBIGB","close_date":"2018-09-01 00:00:00","company_name":"地铁四号线","conn_mark":0,"deal_date":"2018-09-01 06:15:16","deal_money":0,"deal_type":"地铁入站","deal_value":0,"equ_no":"262014111","station":"上塘","dt":"20180901"} at org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:570) at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:154) ... 9 more Caused by: org.apache.hadoop.hive.ql.metadata.Hiv
03-18
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