1、环境

 Spark2.2.1，Hadoop2.6，Intellj，Scala2.11

2、pom文件

<dependency>
    <groupId>org.apache.spark</groupId>
    <artifactId>spark-core_2.11</artifactId>
    <version>2.0.0</version>
</dependency>

<dependency>
    <groupId>org.apache.hadoop</groupId>
    <artifactId>hadoop-common</artifactId>
    <version>${hadoop.common.version}</version>
</dependency>
<dependency>
    <groupId>org.apache.hadoop</groupId>
    <artifactId>hadoop-hdfs</artifactId>
    <version>${hadoop.hdfs.version}</version>
</dependency>
<dependency>
    <groupId>org.apache.hadoop</groupId>
    <artifactId>hadoop-client</artifactId>
    <version>${hadoop.client.version}</version>
</dependency>

3、报错信息如下所示：

java.lang.NoSuchMethodError: javax.servlet.http.HttpServletRequest.isAsyncStarted()Z
at org.spark_project.jetty.servlets.gzip.GzipHandler.handle(GzipHandler.java:484)
at org.spark_project.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
at org.spark_project.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.spark_project.jetty.server.Server.handle(Server.java:499)
at org.spark_project.jetty.server.HttpChannel.handle(HttpChannel.java:311)
at org.spark_project.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at org.spark_project.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
at org.spark_project.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at org.spark_project.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)
16/11/08 21:37:43 WARN HttpChannel: Could not send response error 500: java.lang.NoSuchMethodError: javax.servlet.http.HttpServletRequest.isAsyncStarted()Z
16/11/08 21:37:43 WARN HttpChannel: /jobs/
java.lang.NoSuchMethodError: javax.servlet.http.HttpServletRequest.isAsyncStarted()Z
at org.spark_project.jetty.servlets.gzip.GzipHandler.handle(GzipHandler.java:484)
at org.spark_project.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
at org.spark_project.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.spark_project.jetty.server.Server.handle(Server.java:499)
at org.spark_project.jetty.server.HttpChannel.handle(HttpChannel.java:311)
at org.spark_project.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at org.spark_project.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
at org.spark_project.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at org.spark_project.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)
16/11/08 21:37:43 WARN QueuedThreadPool: 
java.lang.NoSuchMethodError: javax.servlet.http.HttpServletResponse.getStatus()I
at org.spark_project.jetty.server.handler.ErrorHandler.handle(ErrorHandler.java:112)
at org.spark_project.jetty.server.Response.sendError(Response.java:597)
at org.spark_project.jetty.server.HttpChannel.handleException(HttpChannel.java:487)
at org.spark_project.jetty.server.HttpConnection$HttpChannelOverHttp.handleException(HttpConnection.java:594)
at org.spark_project.jetty.server.HttpChannel.handle(HttpChannel.java:387)
at org.spark_project.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at org.spark_project.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
at org.spark_project.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at org.spark_project.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)
16/11/08 21:37:43 WARN QueuedThreadPool: Unexpected thread death: org.spark_project.jetty.util.thread.QueuedThreadPool$3@3ec5063f in SparkUI{STARTED,8<=8<=200,i=4,q=0}

4、问题解决

    4-1）查看报错信息

              java.lang.NoSuchMethodError: javax.servlet.http.HttpServletRequest.isAsyncStarted()Z

              未找到HttpServletRequest类中的isAsyncStarted方法。

   4-2）问题定位

             使用搜索功能，查看该类存在于哪些包下。

            发现在servlet-api-2.5.jar中确实不存在该方法，问题可想而知，servlet-api-3.1.0.jar中的方法被覆盖。

  4-3）问题解决

          所有涉及到该类jar文件且版本低于3.0的均需要进行删除。