我正在使用以下配置单元查询：
this.queryExecutor.executeQuery("Drop table user")
我得到以下异常：
java.lang.LinkageError: ClassCastException: attempting to castjar:file:/usr/hdp/2.4.2.0-258/spark/lib/spark-assembly-1.6.1.2.4.2.0-258-hadoop2.7.1.2.4.2.0-258.jar!/javax/ws/rs/ext/RuntimeDelegate.classtojar:file:/usr/hdp/2.4.2.0-258/spark/lib/spark-assembly-1.6.1.2.4.2.0-258-hadoop2.7.1.2.4.2.0-258.jar!/javax/ws/rs/ext/RuntimeDelegate.class
at javax.ws.rs.ext.RuntimeDelegate.findDelegate(RuntimeDelegate.java:116)
at javax.ws.rs.ext.RuntimeDelegate.getInstance(RuntimeDelegate.java:91)
at javax.ws.rs.core.MediaType.<clinit>(MediaType.java:44)
at com.sun.jersey.core.header.MediaTypes.<clinit>(MediaTypes.java:64)
at com.sun.jersey.core.spi.factory.MessageBodyFactory.initReaders(MessageBodyFactory.java:182)
at com.sun.jersey.core.spi.factory.MessageBodyFactory.initReaders(MessageBodyFactory.java:175)
at com.sun.jersey.core.spi.factory.MessageBodyFactory.init(MessageBodyFactory.java:162)
at com.sun.jersey.api.client.Client.init(Client.java:342)
at com.sun.jersey.api.client.Client.access$000(Client.java:118)
at com.sun.jersey.api.client.Client$1.f(Client.java:191)
at com.sun.jersey.api.client.Client$1.f(Client.java:187)
at com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:193)
at com.sun.jersey.api.client.Client.<init>(Client.java:187)
at com.sun.jersey.api.client.Client.<init>(Client.java:170)
at org.apache.hadoop.yarn.client.api.impl.TimelineClientImpl.serviceInit(TimelineClientImpl.java:340)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
at org.apache.hadoop.hive.ql.hooks.ATSHook.<init>(ATSHook.java:67)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.lang.Class.newInstance(Class.java:442)
at org.apache.hadoop.hive.ql.hooks.HookUtils.getHooks(HookUtils.java:60)
at org.apache.hadoop.hive.ql.Driver.getHooks(Driver.java:1309)
at org.apache.hadoop.hive.ql.Driver.getHooks(Driver.java:1293)
at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1347)
at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1195)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1059)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1049)
at org.apache.spark.sql.hive.client.ClientWrapper$$anonfun$runHive$1.apply(ClientWrapper.scala:495)
at org.apache.spark.sql.hive.client.ClientWrapper$$anonfun$runHive$1.apply(ClientWrapper.scala:484)
at org.apache.spark.sql.hive.client.ClientWrapper$$anonfun$withHiveState$1.apply(ClientWrapper.scala:290)
at org.apache.spark.sql.hive.client.ClientWrapper.liftedTree1$1(ClientWrapper.scala:237)
at org.apache.spark.sql.hive.client.ClientWrapper.retryLocked(ClientWrapper.scala:236)
at org.apache.spark.sql.hive.client.ClientWrapper.withHiveState(ClientWrapper.scala:279)
at org.apache.spark.sql.hive.client.ClientWrapper.runHive(ClientWrapper.scala:484)
at org.apache.spark.sql.hive.client.ClientWrapper.runSqlHive(ClientWrapper.scala:474)
at org.apache.spark.sql.hive.HiveContext.runSqlHive(HiveContext.scala:613)
at org.apache.spark.sql.hive.execution.DropTable.run(commands.scala:89)
at org.apache.spark.sql.execution.ExecutedCommand.sideEffectResult$lzycompute(commands.scala:58)
at org.apache.spark.sql.execution.ExecutedCommand.sideEffectResult(commands.scala:56)
at org.apache.spark.sql.execution.ExecutedCommand.doExecute(commands.scala:70)
at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$5.apply(SparkPlan.scala:132)
at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$5.apply(SparkPlan.scala:130)
at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:150)
at org.apache.spark.sql.execution.SparkPlan.execute(SparkPlan.scala:130)
at org.apache.spark.sql.execution.QueryExecution.toRdd$lzycompute(QueryExecution.scala:55)
at org.apache.spark.sql.execution.QueryExecution.toRdd(QueryExecution.scala:55)
at org.apache.spark.sql.DataFrame.<init>(DataFrame.scala:145)
at org.apache.spark.sql.DataFrame.<init>(DataFrame.scala:130)
at org.apache.spark.sql.DataFrame$.apply(DataFrame.scala:52)
at org.apache.spark.sql.SQLContext.sql(SQLContext.scala:817)
at com.accenture.aa.dmah.spark.core.QueryExecutor.executeQuery(QueryExecutor.scala:35)
at com.accenture.aa.dmah.attribution.transformer.MulltipleUserJourneyTransformer.transform(MulltipleUserJourneyTransformer.scala:32)
at com.accenture.aa.dmah.attribution.userjourney.UserJourneyBuilder$$anonfun$buildUserJourney$1.apply$mcVI$sp(UserJourneyBuilder.scala:31)
at scala.collection.immutable.Range.foreach$mVc$sp(Range.scala:141)
at com.accenture.aa.dmah.attribution.userjourney.UserJourneyBuilder.buildUserJourney(UserJourneyBuilder.scala:29)
at com.accenture.aa.dmah.attribution.core.AttributionHub.executeAttribution(AttributionHub.scala:47)
at com.accenture.aa.dmah.attribution.jobs.AttributionJob.process(AttributionJob.scala:33)
at com.accenture.aa.dmah.core.DMAHJob.processJob(DMAHJob.scala:73)
at com.accenture.aa.dmah.core.DMAHJob.execute(DMAHJob.scala:27)
at com.accenture.aa.dmah.core.JobRunner.<init>(JobRunner.scala:17)
at com.accenture.aa.dmah.core.ApplicationInstance.initilize(ApplicationInstance.scala:48)
at com.accenture.aa.dmah.core.Bootstrap.boot(Bootstrap.scala:112)
at com.accenture.aa.dmah.core.BootstrapObj$.main(Bootstrap.scala:134)
at com.accenture.aa.dmah.core.BootstrapObj.main(Bootstrap.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at scala.tools.nsc.util.ScalaClassLoader$$anonfun$run$1.apply(ScalaClassLoader.scala:71)
at scala.tools.nsc.util.ScalaClassLoader$class.asContext(ScalaClassLoader.scala:31)
at scala.tools.nsc.util.ScalaClassLoader$URLClassLoader.asContext(ScalaClassLoader.scala:139)
at scala.tools.nsc.util.ScalaClassLoader$class.run(ScalaClassLoader.scala:71)
at scala.tools.nsc.util.ScalaClassLoader$URLClassLoader.run(ScalaClassLoader.scala:139)
at scala.tools.nsc.CommonRunner$class.run(ObjectRunner.scala:28)
at scala.tools.nsc.ObjectRunner$.run(ObjectRunner.scala:45)
at scala.tools.nsc.CommonRunner$class.runAndCatch(ObjectRunner.scala:35)
at scala.tools.nsc.ObjectRunner$.runAndCatch(ObjectRunner.scala:45)
at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:74)
at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:96)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:105)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
我看到有类似的帖子here和here但他们到目前为止还没有任何回复。 还看了here，但在我的情况下不认为这是一个有效的行动方案。
有趣的是，当我们尝试使用drop table（或drop table if exist）查询时，这是特定的。
希望找到相同的解决方案。
答案 0 :(得分：0)
据我所知，上述错误可能是因为样本类具有相同的包结构，即：'javax.ws.rs.ext.RuntimeDelegate'在不同的JAR问题中找到。类对象在运行时创建和转换。所以有可能代码负责触发DROP语法，上面的类将被使用和破坏，因为它在类路径中被多次找到。
我在chd5中尝试过DROP和DROP IF EXISTS并且没有问题，下面是我的运行的详细信息：
首次运行 - Hadoop版本 - 2.6，Hive 1.1.0和Spark - 1.3.1（包括用于引发lib的hive库） 第二次运行-Hadoop版本 - 2.6，Hive 1.1.0和Spark - 1.6.1 运行方式 - cli
scala> sqlContext.sql("DROP TABLE SAMPLE");
16/08/04 11:31:39 INFO parse.ParseDriver: Parsing command: DROP TABLE SAMPLE
16/08/04 11:31:39 INFO parse.ParseDriver: Parse Completed
......
scala>sqlContext.sql("DROP TABLE IF EXISTS SAMPLE");
16/08/04 11:40:34 INFO parse.ParseDriver: Parsing command: DROP TABLE IF EXISTS SAMPLE
16/08/04 11:40:35 INFO parse.ParseDriver: Parse Completed
.....
如果可能，请使用不同版本的spark lib验证DROP命令以缩小问题范围。
与此同时，我正在分析罐子，找出两个相同类'RuntimeDelegate'存在的联系，并将报告回来检查是否删除任何jar可以解决问题，并且添加jar应该重新创建相同的问题。