我正在运行http://giraph.apache.org/quick_start.html#qs_section_2的示例 成功安装Giraph后，我创建文件/tmp/tiny_graph.txt并运行
$HADOOP_HOME/bin/hadoop jar /usr/local/giraph/giraph-examples/target/giraph-examples-1.2.0-SNAPSHOT-for-hadoop-1.2.1-jar-with-dependencies.jar org.apache.giraph.GiraphRunner org.apache.giraph.examples.SimpleShortestPathsComputation -vif org.apache.giraph.io.formats.JsonLongDoubleFloatDoubleVertexInputFormat -vip /user/hduser/input/tiny_graph.txt -vof org.apache.giraph.io.formats.IdWithValueTextOutputFormat -op /user/hduser/output/shortestpaths -w 1 -ca giraph.SplitMasterWorker=false
我收到错误
15/03/10 19:38:21 INFO utils.ConfigurationUtils: No edge input format specified. Ensure your InputFormat does not require one.
15/03/10 19:38:21 INFO utils.ConfigurationUtils: No edge output format specified. Ensure your OutputFormat does not require one.
15/03/10 19:38:21 INFO utils.ConfigurationUtils: Setting custom argument [giraph.SplitMasterWorker] to [false] in GiraphConfiguration
15/03/10 19:38:21 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
15/03/10 19:38:22 INFO Configuration.deprecation: mapreduce.job.counters.limit is deprecated. Instead, use mapreduce.job.counters.max
15/03/10 19:38:22 INFO Configuration.deprecation: mapred.job.map.memory.mb is deprecated. Instead, use mapreduce.map.memory.mb
15/03/10 19:38:22 INFO Configuration.deprecation: mapred.job.reduce.memory.mb is deprecated. Instead, use mapreduce.reduce.memory.mb
15/03/10 19:38:22 INFO Configuration.deprecation: mapred.map.tasks.speculative.execution is deprecated. Instead, use mapreduce.map.speculative
15/03/10 19:38:22 INFO Configuration.deprecation: mapreduce.user.classpath.first is deprecated. Instead, use mapreduce.job.user.classpath.first
15/03/10 19:38:22 INFO Configuration.deprecation: mapred.map.max.attempts is deprecated. Instead, use mapreduce.map.maxattempts
15/03/10 19:38:22 INFO job.GiraphJob: run: Since checkpointing is disabled (default), do not allow any task retries (setting mapred.map.max.attempts = 1, old value = 4)
15/03/10 19:38:22 INFO Configuration.deprecation: mapred.job.tracker is deprecated. Instead, use mapreduce.jobtracker.address
15/03/10 19:38:22 INFO client.RMProxy: Connecting to ResourceManager at /0.0.0.0:8032
Exception in thread "main" java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected
at org.apache.giraph.bsp.BspOutputFormat.checkOutputSpecs(BspOutputFormat.java:43)
at org.apache.hadoop.mapreduce.JobSubmitter.checkSpecs(JobSubmitter.java:562)
at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:432)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1296)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1293)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1293)
at org.apache.giraph.job.GiraphJob.run(GiraphJob.java:259)
at org.apache.giraph.GiraphRunner.run(GiraphRunner.java:94)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
at org.apache.giraph.GiraphRunner.main(GiraphRunner.java:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
我目前的版本是 长颈鹿1.2.0 Hadoop 2.6.0
我该怎么做才能解决这个问题？
答案 0 :(得分：0)
从上面的错误日志看，它似乎是Giraph，Hadoop和Java的不兼容版本。检查您使用的版本是否兼容。如果您仍然遇到错误，请更新POM.xml。