问题描述
我正在执行 distcp 操作以将文件从一个目录复制到同一集群中的另一个目录。它是一个 Kerberized Cloudera Hadoop 集群。
我运行的命令:
hadoop distcp -overwrite hdfs://nameservice/hdfs_path_source hdfs://nameservice/hdfs_path_target
我收到以下错误:
java.io.IOException: Can't get Master Kerberos principal for use as renewer
at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodesInternal(TokenCache.java:132)
at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodesInternal(TokenCache.java:100)
at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodes(TokenCache.java:80)
at org.apache.hadoop.tools.SimplecopyListing.validatePaths(SimplecopyListing.java:199)
at org.apache.hadoop.tools.copyListing.buildListing(copyListing.java:85)
at org.apache.hadoop.tools.GlobbedcopyListing.dobuildListing(GlobbedcopyListing.java:89)
at org.apache.hadoop.tools.copyListing.buildListing(copyListing.java:86)
at org.apache.hadoop.tools.distCp.createInputFileListing(distCp.java:368)
at org.apache.hadoop.tools.distCp.prepareFileListing(distCp.java:96)
at org.apache.hadoop.tools.distCp.createAndSubmitJob(distCp.java:205)
at org.apache.hadoop.tools.distCp.execute(distCp.java:182)
at org.apache.hadoop.tools.distCp.run(distCp.java:153)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
at org.apache.hadoop.tools.distCp.main(distCp.java:432)```
解决方法
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