查看调测结果

操作场景

HDFS应用程序运行完成后，可直接通过运行结果查看应用程序运行情况，也可以通过HDFS日志获取应用运行情况。

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.keytab
    1    [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 applicable
    582  [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-examples
    969  [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.txt
    1210 [main] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to delete path /user/hdfs-examples
    1223 [hdfs_example_0] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to create path /user/hdfs-examples/hdfs_example_0
    1224 [hdfs_example_1] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to create path /user/hdfs-examples/hdfs_example_1
    1261 [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.txt
    2874 [hdfs_example_0] INFO  com.huawei.bigdata.hdfs.examples.HdfsExample  - success to delete path /user/hdfs-examples/hdfs_example_0
    2874 [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.txt
    2885 [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.keytab
    817  [main] INFO  org.apache.hadoop.security.UserGroupInformation  - Login successful for user hdfsDevelop using keytab file user.keytab
    817  [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。