基本上我需要在电子病历上做一份烫伤的工作。在我的macbook上的本地hadoop上,同样的工作运行得非常好,但是在EMR上的Hadoop上却失败了。
在级联用户组和scala用户组中,我也在努力寻求对此问题的帮助,但一直未能获得帮助。到目前为止,在过去的几天里,我尝试了各种不同的改变,但没有取得多大的进展。
在深入研究细节之前,这里有一个错误:
线程"main“java.lang.NoSuchMethodError: java.lang.NoSuchMethodError中的异常com.aggregation.job.DataAggregation$.(DataAggregation.scala:30) at com.aggregation.job.DataAggregation$.(DataAggregation.scala) at com.aggregation.job.DataAggregation.main(DataAggregation.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(方法)org.apache.hadoop.util.RunJar.main(RunJar.java:212) ( .java:606)
他们说这可能是scala与二进制文件的冲突,但我看不到任何明显的东西。如果有人能帮我弄清楚,那就太好了。
环境:
Amazon : 3.8.0 (包括Scala2.11.1、Hadoop2.4.0、Java 1.7.0_76 - AMI详情)
应用环境:烫伤0.15.0,Scala2.11.1,Java 1.7.0_80,Hadoop2.4.0
我尝试过对配置进行各种更改,甚至在EMR中手动安装了更高的scala版本,但到目前为止,错误并没有消失。
请帮帮我!谢谢。
我
设置
build.sbt:
scalaVersion := "2.11.1"
ivyScala := ivyScala.value map {
_.copy(overrideScalaVersion = true)
}dependencies.sbt:
import AssemblyKeys._
val hadoopVersion = "2.4.0"
val scaldingVersion = "0.15.0"
libraryDependencies ++= Seq(
"com.twitter" %% "scalding-core" % scaldingVersion,
"com.twitter" %% "scalding-json" % scaldingVersion,
"com.twitter" %% "scalding-jdbc" % scaldingVersion,
"com.github.nscala-time" %% "nscala-time" % "2.0.0",
"org.apache.hadoop" % "hadoop-common" % hadoopVersion % "provided",
"org.apache.hadoop" % "hadoop-mapreduce-client-core" % hadoopVersion % "provided"
)
excludedJars in assembly <<= (fullClasspath in assembly) map { cp =>
val excludes = Set(
"jsp-api-2.1-6.1.14.jar",
"jsp-2.1-6.1.14.jar",
"jasper-compiler-5.5.12.jar",
"minlog-1.2.jar", // Otherwise causes conflicts with Kyro (which bundles it)
"janino-2.5.16.jar", // Janino includes a broken signature, and is not needed anyway
"commons-beanutils-core-1.8.0.jar", // Clash with each other and with commons-collections
"commons-beanutils-1.7.0.jar", // "
"hadoop-core-1.2.1.jar", // Provided by Amazon EMR. Delete this line if you're not on EMR
"hadoop-tools-1.2.1.jar" // "
)
cp filter { jar => excludes(jar.data.getName) }
}
resolvers ++= Seq(
"Conjars repo" at "http://conjars.org/repo"
)assembly.sbt
import AssemblyKeys._
assemblySettings
mergeStrategy in assembly := Merge.mergeStrategy项目/建筑.属性:
sbt.version=0.13.1项目/组装。
addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.11.0")最后,这是一个依赖树,它使用依赖关系图插件来查看我是否有正确的版本。对不起,这是相当长的时间,如果我应该以其他方式显示这些信息,请推荐建议。
sbt依赖树:
[info] com.abc.aggregator_2.11:0.1-20150628T184441 [S]
[info] +-com.github.nscala-time:nscala-time_2.11:2.0.0 [S]
[info] | +-joda-time:joda-time:2.7
[info] | +-org.joda:joda-convert:1.2
[info] |
[info] +-com.twitter:scalding-core_2.11:0.15.0 [S]
[info] | +-cascading:cascading-core:2.6.1
[info] | | +-org.codehaus.janino:janino:2.7.5
[info] | | | +-org.codehaus.janino:commons-compiler:2.7.5
[info] | | |
[info] | | +-riffle:riffle:0.1-dev
[info] | | +-thirdparty:jgrapht-jdk1.6:0.8.1
[info] | |
[info] | +-cascading:cascading-hadoop:2.6.1
[info] | | +-cascading:cascading-core:2.6.1
[info] | | +-org.codehaus.janino:janino:2.7.5
[info] | | | +-org.codehaus.janino:commons-compiler:2.7.5
[info] | | |
[info] | | +-riffle:riffle:0.1-dev
[info] | | +-thirdparty:jgrapht-jdk1.6:0.8.1
[info] | |
[info] | +-cascading:cascading-local:2.6.1
[info] | | +-cascading:cascading-core:2.6.1
[info] | | | +-org.codehaus.janino:janino:2.7.5
[info] | | | | +-org.codehaus.janino:commons-compiler:2.7.5
[info] | | | |
[info] | | | +-riffle:riffle:0.1-dev
[info] | | | +-thirdparty:jgrapht-jdk1.6:0.8.1
[info] | | |
[info] | | +-com.google.guava:guava:14.0.1 (evicted by: 15.0)
[info] | | +-com.google.guava:guava:15.0
[info] | | +-org.slf4j:slf4j-api:1.6.6
[info] | | +-org.slf4j:slf4j-api:1.7.2 (evicted by: 1.6.6)
[info] | |
[info] | +-com.twitter:algebird-core_2.11:0.10.1 [S]
[info] | | +-com.googlecode.javaewah:JavaEWAH:0.6.6
[info] | |
[info] | +-com.twitter:bijection-core_2.11:0.8.0 [S]
[info] | +-com.twitter:chill-algebird_2.11:0.6.0 [S]
[info] | | +-com.esotericsoftware.kryo:kryo:2.21
[info] | | | +-com.esotericsoftware.minlog:minlog:1.2
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[info] | | | | +-org.ow2.asm:asm:4.0
[info] | | | |
[info] | | | +-org.objenesis:objenesis:1.2
[info] | | |
[info] | | +-com.twitter:algebird-core_2.11:0.10.0 (evicted by: 0.10.1)
[info] | | +-com.twitter:algebird-core_2.11:0.10.1 [S]
[info] | | | +-com.googlecode.javaewah:JavaEWAH:0.6.6
[info] | | |
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[info] | | | |
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[info] | | |
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[info] | | |
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[info] | |
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[info] |
[info] +-com.twitter:scalding-jdbc_2.11:0.15.0 [S]
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[info] | | +-com.google.guava:guava:15.0
[info] | |
[info] | +-cascading:cascading-jdbc-mysql:2.6.0
[info] | | +-cascading:cascading-jdbc-core:2.6.0
[info] | | | +-com.google.guava:guava:15.0
[info] | | |
[info] | | +-com.google.guava:guava:15.0
[info] | | +-mysql:mysql-connector-java:5.1.25
[info] | |
[info] | +-com.twitter:scalding-core_2.11:0.15.0 [S]
[info] | +-cascading:cascading-core:2.6.1
[info] | | +-org.codehaus.janino:janino:2.7.5
[info] | | | +-org.codehaus.janino:commons-compiler:2.7.5
[info] | | |
[info] | | +-riffle:riffle:0.1-dev
[info] | | +-thirdparty:jgrapht-jdk1.6:0.8.1
[info] | |
[info] | +-cascading:cascading-hadoop:2.6.1
[info] | | +-cascading:cascading-core:2.6.1
[info] | | +-org.codehaus.janino:janino:2.7.5
[info] | | | +-org.codehaus.janino:commons-compiler:2.7.5
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[info] | | | |
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[info] | | | +-thirdparty:jgrapht-jdk1.6:0.8.1
[info] | | |
[info] | | +-com.google.guava:guava:14.0.1 (evicted by: 15.0)
[info] | | +-com.google.guava:guava:15.0
[info] | | +-org.slf4j:slf4j-api:1.6.6
[info] | | +-org.slf4j:slf4j-api:1.7.2 (evicted by: 1.6.6)
[info] | |
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[info] | |
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[info] | | |
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[success] Total time: 12 s, completed Jun 28, 2015 11:44:54 AM应要求提供更多信息:
我使用'sbt程序集‘构建fat jar,目前我使用AWS控制台和一个“自定义JAR”步骤来测试这个步骤,然后再自动化这个过程。
JAR location: s3://path/to/jar/data-aggregator-0.1.jar
Arguments: com.abc.aggregation.job.DataAggregation --hdfs --input s3n://path/to/input/data/file.json --output s3n://path/to/input/data/file.txt更新:
我能够通过提供指向Scala2.11.1 jars的HADOOP_CLASSPATH来克服上述错误,同时将其排除在sbt程序集步骤之外。这是在使用hadoop-user-env.sh时传递的,似乎适用于主节点。然而,一旦到了映射步骤,它就再次失败,因为另一个Scala错误。现在我被困在这一步了。
假设这是因为映射器和还原器没有看到HADOOP_CLASSPATH更新,我尝试包括指向hadoop本身上的scala文件的-libjars参数。但这个(下面)似乎不起作用。
JAR location: s3://path/to/jar/data-aggregator-0.1.jar
Arguments: com.abc.aggregation.job.DataAggregation -libjars /usr/share/scala/lib/scala-library.jar,/usr/share/scala/lib/scala-reflect.jar --hdfs --input s3n://path/to/input/data/file.json --output s3n://path/to/input/data/file.txt发布于 2015-06-30 20:59:26
已修复。因此,EMR实例中确实存在多个scala jar,它们不是来自我的应用程序jar。
除了/usr/share/scala下2.11二进制文件的安装位置之外,2.10 jar隐藏在/usr/share/aws/emr/emrfs/lib中。因此,我在集群的所有实例中去掉了2.10 jar,我的工作成功地完成了。现在,我将为此创建一个引导操作。
$ sudo find / -name "scala-library-2.10.*.jar" -exec rm -rf {} \;FYI,以下是其存在的途径:
[ec2-user@ip-172-31-72-130 ~]$ sudo find / -name "scala-library-2.11.*.jar"
/home/hadoop/.versions/hbase-0.94.18/lib/scala-library-2.11.0.jar
/usr/share/doc/scala/api/jars/scala-library-2.11.1-javadoc.jar
[ec2-user@ip-172-31-72-130 ~]$ sudo find / -name "scala-library-2.10.*.jar"
/usr/share/aws/emr/emrfs/lib/scala-library-2.10.5.jar发布于 2016-05-11 08:59:22
在经历了类似的问题之后……这显然是jar依赖项之间的版本不匹配。我首先登录到EMR主服务器,然后打开星火壳显示正在使用的scala版本,从而修复了它。现在,使用它在pom文件中配置您自己的依赖项,它应该可以工作。
https://stackoverflow.com/questions/31103525
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