我在Ubuntu 14.04 LTS上安装了Spark 1.5.使用命令运行build时,build/mvn -Dscala-2.11 -DskipTests clean package我在项目Spark SQL期间遇到以下构建错误:
[error] missing or invalid dependency detected while loading class file 'WebUI.class'.
[error] Could not access term eclipse in package org,
[error] because it (or its dependencies) are missing. Check your build definition for
[error] missing or conflicting dependencies. (Re-run with `-Ylog-classpath` to see the problematic classpath.)
[error] A full rebuild may help if 'WebUI.class' was compiled against an incompatible version of org.
[error] missing or invalid dependency …Run Code Online (Sandbox Code Playgroud) 我在 AWS EC2 虚拟机 (Ubuntu 14.04) 上,愿意在我的 S3 文件中的 RDD 上使用 Spark 做一些基础知识。成功运行此脏命令时(暂时不使用sparkContext.hadoopConfiguration)
scala> val distFile = sc.textFile("s3n://< AWS_ACCESS_KEY_ID>:<AWS_SECRET_ACCESS_KEY>@bucketname/folder1/folder2/file.csv")
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然后我在运行时收到以下错误 distFile.count()
java.lang.NoClassDefFoundError: org/jets3t/service/ServiceException
at org.apache.hadoop.fs.s3native.NativeS3FileSystem.createDefaultStore(NativeS3FileSystem.java:334)
at org.apache.hadoop.fs.s3native.NativeS3FileSystem.initialize(NativeS3FileSystem.java:324)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2596)
...
...
Caused by: java.lang.ClassNotFoundException: org.jets3t.service.ServiceException
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
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我以前有
export在 .bashrc 中添加了两个键作为环境变量SPARK_HADOOP_VERSION=2.6.0-cdh5.4.1 sbt/sbt assembly它与 的语法有关textFile("s3n// ...")吗?我试过其他人,包括s3://没有成功......
谢谢
我遇到了"经典"的The ResourceConfig instance does not contain any root resource classes错误HelloWorldResource.java
我遵循了Unmanaged Extensions说明:
这是代码:
package org.neo4j.examples.server.unmanaged;
import ...
@Path( "/helloworld" )
public class HelloWorldResource {
//private final GraphDatabaseService database;
//public HelloWorldResource( @Context GraphDatabaseService database )
//{
// this.database = database;
//}
@GET
@Produces( MediaType.TEXT_PLAIN )
@Path( "/{nodeId}" )
public Response hello( @PathParam( "nodeId" ) long nodeId )
{
// Do stuff with the database
return Response.status( Status.OK ).entity(
("Hello …Run Code Online (Sandbox Code Playgroud) 我的问题相当于数据框中与R相关的帖子Create Sparse Matrix,除了我想在Spark上执行相同的操作(最好是在Scala中).
data.txt文件中的数据样本,从中创建稀疏矩阵:
UserID MovieID Rating
2 1 1
3 2 1
4 2 1
6 2 1
7 2 1
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所以最后列是电影ID,行是用户ID
1 2 3 4 5 6 7
1 0 0 0 0 0 0 0
2 1 0 0 0 0 0 0
3 0 1 0 0 0 0 0
4 0 1 0 0 0 0 0
5 0 0 0 0 0 0 0
6 0 …Run Code Online (Sandbox Code Playgroud) apache-spark ×3
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