at org.apache.hadoop.util.NativeCodeLoader.buildSupportsOpenssl(Native Method)
at org.apache.hadoop.crypto.OpensslCipher.<clinit>(OpensslCipher.java:84)
at org.apache.hadoop.crypto.OpensslAesCtrCryptoCodec.<init>(OpensslAesCtrCryptoCodec.java:50)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:129)
at org.apache.hadoop.crypto.CryptoCodec.getInstance(CryptoCodec.java:67)
at org.apache.hadoop.crypto.CryptoCodec.getInstance(CryptoCodec.java:100)
at org.apache.hadoop.fs.Hdfs.<init>(Hdfs.java:91)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.apache.hadoop.fs.AbstractFileSystem.newInstance(AbstractFileSystem.java:129)
at org.apache.hadoop.fs.AbstractFileSystem.createFileSystem(AbstractFileSystem.java:157)
at org.apache.hadoop.fs.AbstractFileSystem.get(AbstractFileSystem.java:242)
at org.apache.hadoop.fs.FileContext$2.run(FileContext.java:334)
at org.apache.hadoop.fs.FileContext$2.run(FileContext.java:331)
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.fs.FileContext.getAbstractFileSystem(FileContext.java:331)
at org.apache.hadoop.fs.FileContext.getFileContext(FileContext.java:448)
at org.apache.hadoop.fs.FileContext.getFileContext(FileContext.java:470)
at org.apache.hadoop.mapred.YARNRunner.<init>(YARNRunner.java:138)
at org.apache.hadoop.mapred.YARNRunner.<init>(YARNRunner.java:122)
at org.apache.hadoop.mapred.YARNRunner.<init>(YARNRunner.java:112)
at org.apache.hadoop.mapred.YarnClientProtocolProvider.create(YarnClientProtocolProvider.java:34)
at org.apache.hadoop.mapreduce.Cluster.initialize(Cluster.java:95)
at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:82)
at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:75)
at org.apache.hadoop.mapreduce.Job$9.run(Job.java:1266)
at org.apache.hadoop.mapreduce.Job$9.run(Job.java:1262)
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.connect(Job.java:1261)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1290)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1314)
at cug.MR.Import(MR.java:99)
at cug.MR.main(MR.java:103)
查看yarn界面，發現該節點是個不健康的節點。
到網上搜索發現時磁盤空間不足引起的，現象是nm-local-dir文件夾下面寫入不了文件。
然後查看自己虛擬機的磁盤情況，發現100G的磁盤只剩下不足2G。於是刪除一些文件，Mr跑動正常。