It’s a lot of theory right now so let me give you the full background and see
if we can more refine the answer.
I’ve had a lot of clients with data warehouses that just weren’t functional for
various reasons. I’m researching Hadoop to try and figure out a way to totally
eliminate traditional
Hi,
I have a question.
How do I selectively open port range for Hadoop Yarn App Master on a cluster.
I have seen the jira issue in
http://mail-archives.apache.org/mod_mbox/hadoop-mapreduce-issues/201204.mbox/%3c74835698.75.1335357881103.javamail.tom...@hel.zones.apache.org%3E
fixed in version
Ok. If you think, the noise levels in the data is going to be so less,
doing the view creation is probably costly and meaningless.
HDFS is append-only. So, there's no point writing the transactions as HDFS
files and trying to perform analytics on top of it directly.
Instead, you could go with
Hi,
I am using Hadoop 2.2.0 version.
I am not finding start-mapred.sh in the sbin directory.
How do I start Job tracker and Task tracker.
I tried version 1 way by directly executing but getting these errors.
[hadoop@ip-10-147-128-12 ~]$ sbin/hadoop-daemon.sh start jobtracker
starting
Well, keeping bad data has its use too. I assume you know about temporal
database.
Back to your use case, if you only need to remove a few records from HDFS
files, the easiest might be during the reading. It is a view, of course,
but it doesn't mean you need to write it back to HDFS. All your
Hi,
My YARN resource manager is consuming 100% CPU when I am running an
application that is running for about 10 hours, requesting as many as 27000
containers. The CPU consumption was very low at the starting of my
application, and it gradually went high to over 100%. Is this a known issue
or
Hi all,
I'm a newbie hadoop user, and I started using hadoop 2.4.1 as my first
installation.
So now I'm struggling with mapred, mapreduce, yarnMRv1, MRv2, yarn.
I tried to read the documentation, but I couldn't find a clear
answer...sometimes it seems that documentations thinks that you know
I will be out of the office starting 2014/08/11 and will not return until
2014/08/12.
I will respond to your message when I return.
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This
I quickly went over the wikipedia page for temporal databases. Just sounds like
a slowly changing dimension. Data being valid at different points in time isn’t
weird to me. Most where clauses off a data warehouse are going to use the date
dimension. What we’re talking about is data that was
Hello,
I have set up multiple datanodes on a single machine following the instructions
in
http://mail-archives.apache.org/mod_mbox/hadoop-common-user/201009.mbox/%3ca3ef3f6af24e204b812d1d24ccc8d71a03688...@mse16be2.mse16.exchange.ms%3E
So i see 2 datanodes up and running when i run jps command.
How much memory it have and how many maps and reducer you have set with how
much heap size?
On Aug 11, 2014 11:17 AM, Sindhu Hosamane sindh...@gmail.com wrote:
Hello,
I have set up multiple datanodes on a single machine following the
instructions in
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