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From Brahma Reddy Battula <brahmareddy.batt...@huawei.com>
Subject RE: Re:RE: Unable to use ./hdfs dfsadmin -report with HDFS Federation
Date Mon, 24 Aug 2015 04:45:37 GMT
To get dfsadmin report in the federated cluster, you need to do configure core-site.xml like
below.( client side)

1) Configure all the nameservices
2) Configure the fs.defaultFS to corresponding name service..

Example:

If we Four name services are running in federated cluster, you can configure like following..

<property>
<name>fs.viewfs.mounttable.ClusterX.link./dir2</name>
<value>hdfs://ns1/dir1</value>
</property>

<property>
<name>fs.viewfs.mounttable.ClusterX.link./dir3</name>
<value>hdfs://ns2/dir2</value>
</property>

<property>
<name>fs.viewfs.mounttable.ClusterX.link./dir4</name>
<value>hdfs://ns3/dir3</value>
</property>

<property>
<name>fs.viewfs.mounttable.ClusterX.link./dir5</name>
<value>hdfs://ns4/dir4</value>
</property>

And if you want get admin report for ns1 and configure like below.

<property>
<name>fs.defaultFS</name>
<value>hdfs://ns1</value>
</property>

Hence it will print details for ns1..



For more details check following.

http://hadoop.apache.org/docs/r2.7.1/hadoop-project-dist/hadoop-hdfs/ViewFs.html


Hope this can answer your query.




Thanks & Regards

Brahma Reddy Battula




________________________________
From: Todd [bit1129@163.com]
Sent: Monday, August 24, 2015 9:33 AM
To: user@hadoop.apache.org
Subject: Re:RE: Unable to use ./hdfs dfsadmin -report with HDFS Federation


Thanks Chinnappan for the quick reply!
 Looks that the command hdfs dfsadmin -report should work if I want to see the whole cluster's
status. But as you see, I see the message that view.fs is not   HDFS file system.
If I want to see part of the whole cluster, then how I could go on?
could you please show me the command? Thanks!




At 2015-08-24 11:57:26, "Chinnappan Chandrasekaran" <chiranchandra@jos.com.sg> wrote:

hdfs dfsadmin –report

The above command will show entire cluster status

From: Todd [mailto:bit1129@163.com<mailto:bit1129@163.com>]
Sent: Monday, 24 August, 2015 11:54 AM
To: user@hadoop.apache.org<mailto:user@hadoop.apache.org>
Subject: Unable to use ./hdfs dfsadmin -report with HDFS Federation

Hi, our hadoop cluster is using HDFS Federation, but when use the following command to report
the HDFS status
It gives me the following message that viewfs is NOT HDFS filesystem
Then how can I proceed to report the hdfs status
Thanks!

[admin@namenode1]$ ./hdfs dfsadmin -report
report: FileSystem viewfs://nsX/ is not an HDFS file system
Usage: hdfs dfsadmin [-report] [-live] [-dead] [-decommissioning]

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