操作步骤

• 查看运行结果获取应用运行情况
  • HdfsExample Linux样例程序运行结果如下所示。

    0    [main] INFO  org.apache.hadoop.security.UserGroupInformation  - Login successful for user hdfsDevelop using keytab file user.keytab1    [main] INFO  com.huawei.hadoop.security.LoginUtil  - Login success!!!!!!!!!!!!!!568  [main] WARN  org.apache.hadoop.util.NativeCodeLoader  - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable582  [main] WARN  org.apache.hadoop.hdfs.shortcircuit.DomainSocketFactory  - The short-circuit local reads feature cannot be used because libhadoop cannot be loaded.793  [main] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to create path /user/hdfs-examples969  [main] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to write.1068 [main] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to append.1191 [main] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - result is : hi, I am bigdata. It is successful if you can see me.I append this content.1191 [main] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to read.1202 [main] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to delete the file /user/hdfs-examples/test.txt1210 [main] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to delete path /user/hdfs-examples1223 [hdfs_example_0] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to create path /user/hdfs-examples/hdfs_example_01224 [hdfs_example_1] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to create path /user/hdfs-examples/hdfs_example_11261 [hdfs_example_0] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to write.1264 [hdfs_example_1] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to write.2807 [hdfs_example_0] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to append.2810 [hdfs_example_1] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to append.2861 [hdfs_example_0] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - result is : hi, I am bigdata. It is successful if you can see me.I append this content.2861 [hdfs_example_0] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to read.2866 [hdfs_example_0] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to delete the file /user/hdfs-examples/hdfs_example_0/test.txt2874 [hdfs_example_0] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to delete path /user/hdfs-examples/hdfs_example_02874 [hdfs_example_1] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - result is : hi, I am bigdata. It is successful if you can see me.I append this content.2874 [hdfs_example_1] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to read.2879 [hdfs_example_1] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to delete the file /user/hdfs-examples/hdfs_example_1/test.txt2885 [hdfs_example_1] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to delete path /user/hdfs-examples/hdfs_example_1

  • ColocationExample Linux样例程序运行结果如下所示。

    0    [main] INFO  com.huawei.hadoop.security.LoginUtil  - JaasConfiguration loginContextName=Client principal=hdfsDevelop useTicketCache=false keytabFile=/opt/hdfsDemo/conf/user.keytab817  [main] INFO  org.apache.hadoop.security.UserGroupInformation  - Login successful for user hdfsDevelop using keytab file user.keytab817  [main] INFO  com.huawei.hadoop.security.LoginUtil  - Login success!!!!!!!!!!!!!!1380 [main] WARN  org.apache.hadoop.util.NativeCodeLoader  - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable...Create Group has finished.Put file is running...Put file has finished.Delete file is running...Delete file has finished.Delete Group is running...Delete Group has finished....

• 查看HDFS日志获取应用运行情况

  您可以查看HDFS的namenode日志了解应用运行情况，并根据日志信息调整应用程序。