FAQ
Hello,

I tried using DataNodeCluster to simulate a set of 3000 datanodes. The
namenode is already running.

When I gave the below command :

$ java DataNodeCluster -n 3000 -simulated -inject 1 1 -d someDirectory



I am getting the following error:

Starting 3000 Simulated Data Nodes that will connect to Name Node at
gs301850.inktomisearch.com:50830

Starting DataNode 0 with dfs.data.dir:
someDirectory/dfs/data/data1,someDirectory/dfs/data/data2

08/12/22 11:42:33 INFO datanode.DataNode: Registered
FSDatasetStatusMBean

08/12/22 11:42:33 INFO datanode.DataNode: Opened info server at 60195

08/12/22 11:42:33 INFO datanode.DataNode: Balancing bandwith is 1048576
bytes/s

08/12/22 11:42:33 INFO datanode.DataNode: Periodic Block Verification is
disabled because verifcation is supported only with FSDataset.

08/12/22 11:42:33 INFO http.HttpServer: Version Jetty/5.1.4

08/12/22 11:42:33 INFO util.Container: Started
HttpContext[/static,/static]

08/12/22 11:42:34 INFO util.Credential: Checking Resource aliases

08/12/22 11:42:34 INFO util.Container: Started
org.mortbay.jetty.servlet.WebApplicationHandler@1f03691

08/12/22 11:42:34 INFO http.SocketListener: Started SocketListener on
127.0.0.1:60196

08/12/22 11:42:34 INFO datanode.DataNode: Waiting for threadgroup to
exit, active threads is 0

Error creating data node:java.io.IOException: Problem starting http
server



The system just hangs after the above message.



Can anyone please let me know why I am getting the above error?



Thanks in advance

Ramya

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postedDec 22, '08 at 11:47a
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