I agree with you, Andy.
This seems to be a great look into what Hadoop MapReduce is not good at.
Over in the HBase world, we constantly deal with comparisons like this to
RDBMSs, trying to determine if one is better than the other. It's a false
choice and completely depends on the use case.
This sounds good enough for a JIRA ticket to me.
-Bryan
On Feb 3, 2009, at 11:44 AM, Jonathan Gray wrote:
Chris,
For my specific use cases, it would be best to be able to set N
mappers/reducers per job per node (so I can explicitly say, run at
most 2 at
a time of this CPU bound
that no node can run more than N tasks from that job?
Or both?
just reconciling the conversation we had last week with this thread.
ckw
On Feb 3, 2009, at 11:16 AM, Jonathan Gray wrote:
All,
I have a few relatively small clusters (5-20 nodes) and am having
trouble
keeping them
.
I wanted to ping the list before filing an issue because it seems like
someone may have thought about this in the past.
Thanks.
Jonathan Gray
Perhaps what you are looking for is HBase?
http://hbase.org
HBase is a column-oriented, distributed store that sits on top of HDFS and
provides random access.
JG
-Original Message-
From: Rasit OZDAS [mailto:rasitoz...@gmail.com]
Sent: Tuesday, January 27, 2009 1:20 AM
To:
would I specify to the secondary where
primary is located?
We're also upgrading to Hadoop 0.19.0 at this time.
Thank you for any help.
Jonathan Gray
I have fixed the issue with the SecondaryNameNode not contacting primary
with the 'dfs.http.address' config option.
Other issues still unsolved.
-Original Message-
From: Jonathan Gray [mailto:jl...@streamy.com]
Sent: Monday, December 15, 2008 10:55 AM
To: core-user@hadoop.apache.org
that a number of the blocks had replication 1.
Obviously I can handle this by deleting less at any one time, but it seems like
there might be something wrong. With no CPU utilization, why does the datanode
not respond to the namenode?
Thanks.
Jonathan Gray
that's my rant for the week. Hope that provides more clarity than
confusion.
Jonathan Gray
Jonathan Gray schrieb:
A few very big differences...
- HBase/BigTable don't have transactions in the same way that a
relational database does. While it is possible (and was just recently
a
relational database is never simple.
I hope this starts to shed some light on what the differences are.
Jonathan Gray
Streamy Inc.
-Original Message-
From: Mork0075 [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 21, 2008 8:48 AM
To: core-user@hadoop.apache.org; [EMAIL PROTECTED
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