Hi,
Currently, I have a web front end for user to do full text index with
Lucene on a single server, but is it possible to span the search on
several servers, with the help of Hadop, so query time can be
minimized with the use of Map reduce?
Any existing sample on this?
Thanks.
Thank you guys, I very much appreciate your support.
I will try these options and will revert with my findings soon.
Regards,
Jugs
> Hi,
>
>
>
> I have a cluster of more than 25 servers which basically serves the
purpose
> for storage. However I was wondering what will happen if the maste
On each of my nodes that I have deployed Hadoop to I also deployed another
large java project. The deployment is in the same place at each node. Is
there a way I can set the classpath of each task to include this other
deployment's libs?
Thanks,
Lee
> 1. Will Hadoop move the blocks in master node to the newly added nodes?
No, HDFS will not move blocks to new nodes automatically. New files that
are added will likely have their blocks placed on the new nodes. Also,
removing old files will remove some blocks that are on your older nodes.
One
Each FileSystem instance if in DFS mode uses a DistributedFileSystem
implementation class which has one non-singleton instance of the
DFSClient which has a LeaseChecker thread that monitors only its own
lease which only communicates with the single NameNode. Because of this
I don't see how the
Hi Dennis,
I agree with your scenario because of which the client may not get a chance
to renew a lease within a 1 minute interval. However, this will occur only
if an RPC goes "bad". You said that: "Now let's suppose that for some reason
the RPC call goes bad and blocks. It is going to wait 60 s
Dennis Kubes wrote:
This is going to be a long email. I am seeing a race condition between
the renewing of leases on the DFS and RPC client timeout values and I
wanted to get some feedback on this.
Does https://issues.apache.org/jira/browse/HADOOP-563 fix this?
Doug
I have experienced the same condition.
Here is the exception I was seeing:
2006-09-17 22:29:08,798 INFO org.apache.hadoop.mapred.TaskTracker:
task_0001_r_32_3 0.7986655% reduce > reduce
2006-09-17 22:29:27,112 INFO org.apache.hadoop.mapred.TaskRunner:
task_0001_r_32_3 06/09/17 22:29:27
This is going to be a long email. I am seeing a race condition between
the renewing of leases on the DFS and RPC client timeout values and I
wanted to get some feedback on this.
We keep seeing leases failing to be renewed where a task has to start
over. Usually the task will complete fine bu
Jagadeesh wrote:
Hi,
I have a cluster of more than 25 servers which basically serves the purpose
for storage. However I was wondering what will happen if the master node
gets exhausted of disk space. If I add more nodes to the cluster,
1. Will Hadoop move the blocks in master node to
Hi,
I have a cluster of more than 25 servers which basically serves the purpose
for storage. However I was wondering what will happen if the master node
gets exhausted of disk space. If I add more nodes to the cluster,
1. Will Hadoop move the blocks in master node to the newly added nodes?
Hadoop currently does not log user's logging messages.
All the user's logging messages are ignored. Hadoop-489 is to address this
issue.
Runping
> -Original Message-
> From: 张茂森 [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, November 01, 2006 2:52 AM
> To: hadoop-user@lucene.apache.org
> S
Hi,
I have a cluster of more than 25 servers which primararily serves the
purpose for storage. However I was wondering what will happen if the master
node gets exhausted of disk space.
Thanks
Jugs
Hi all:
I have encountered one problem about displaying log info on Console.
This is the detailed sentence, in order to show it more clearly, I will use
the code of wordcount:
public class WordCount {
private static final Log LOG =
LogFactory.getLog(WordCount.class.getName()); // added b
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