Another reason to perhaps avoid tons of versions is there is no query
mechanism, nor will there ever be. The mechanism is limited to asking for
either the last N versions, or all of them. If you are querying a date
range, this is obviously a problem.
-ryan
On Fri, Apr 3, 2009 at 7:25 AM, stack
Thanks Stack and Erik.
I will look at the backup MR job in the issue.
BTW, we won't be able to use the table based indexer as it's not useful
whenever you use column name as data (so that we can store multiple columns
per row). Most of our tables have column as data and hence we cannot
specify th
Hi Vaibhav!
*https://issues.apache.org/jira/browse/HBASE-974
*is what Stack is talking about, just look at the last comment that I made
so you know why it is a little bit slow at the moment.
Internally on Streamy we use a setup class so that every table is only
initiated one and you get and put th
Oh, you could also set your columns to flush more frequently than default so
edits are presisted more often.
St.Ack
On Sat, Apr 4, 2009 at 12:16 AM, stack wrote:
> Good. I'm glad you are doing the evaluations. My guess is that you'll
> need to wait on 0.20.0 to get the realtime numbers you'll
Good. I'm glad you are doing the evaluations. My guess is that you'll need
to wait on 0.20.0 to get the realtime numbers you'll be happy with.
Look through hbase JIRAs for issues on backups. There are a few. I think
Erik Holstad's the most up-to-date. Check it out (A google summer of code
pro
On top of Eriks' message, this might help:
http://wiki.apache.org/hadoop/Hbase/Shell
St.Ack
On Fri, Apr 3, 2009 at 9:50 PM, Jae Joo wrote:
> Does anyone help me to run HQL? I ran bin/hbase shell, but it looks like
> tha
> it is not HQL.
>
> Jae Joo
>
Hi Jae!
The HQL commands have been deprecated since I believe 0.18 or maybe earlier.
Sorry for the inconvenience, I believe this was done so that people would
understand
that this is not a relational database and help them to start thinking in
HBase terms
instead.
Regards Erik
Hi St. Ack, Erik,
Thanks very much for the help. I now have Hbase back up and running. I
actually completely deleted the HDFS directory, and reformatted from
scratch. I also deleted everything pertaining to Hadoop and Hbase in the
/tmp directory before doing a new invocation, as Erik suggested.
Does anyone help me to run HQL? I ran bin/hbase shell, but it looks like tha
it is not HQL.
Jae Joo
Stack,
We are still trying to explore answers to these questions.
For example, we are at this moment doing performance testing on hbase to see
whether it can be used as a real time database.
We haven't finalized the new schema - I am exploring the table based indexes
feature to see how it can he
Hi Genady!
If everything goes as planned there will be a possibility to input a
TimeRange into every get query in 0.20, so that you will
be able to do the call, give me all data from row r, family f and column c
in the timerange t2 to t1. The nice thing about the
new implementation is also that you
I have another thread in progress re using HBase as a financial time series
database.
http://mail-archives.apache.org/mod_mbox/hadoop-hbase-user/200904.mbox/%3cea7d6a710904011948l2a79bf18hfbc7a6102676b...@mail.gmail.com%3e
On Fri, Apr 3, 2009 at 8:38 AM, Jim Kellerman (POWERSET) <
jim.keller...
There are a number of Jiras open to address this issue.
See HBASE-33, HBASE-52 and HBASE-1182
---
Jim Kellerman, Powerset (Live Search, Microsoft Corporation)
> -Original Message-
> From: Genady [mailto:gena...@exelate.com]
> Sent: Friday, April 03, 2009 2:56 AM
> To: hbase-user@hadoop.ap
Thanks for the detailed description of your experiences.
On Thu, Apr 2, 2009 at 10:03 AM, Jun Li wrote:
> ...
>
> (1) I first changed HBASE_HEAPSIZE defined in hbase-env.sh from 1 GB to 2
> GB, and run: bin/hadoop org.apache.hadoop.hbase.PerformanceEvaluation
> sequentialWrite 4. It fails at
On Thu, Apr 2, 2009 at 9:53 PM, Wesley Chow wrote:
>
> Are there technical limitations to the number of different timestamps per
> cell? If it's the case that you're doing to be dealing with tens of
> thousands to millions of entries all at one cell, perhaps you should check
> that to make sure i
Jonathan,
Please correct me If I wrong, but one of the features that HBase obviously
missing is possibility to select records based on timestamp range(week,
month, etc.), as far as understand, it's possible to make select with
specified timestamps, but in a most cases you want to select ranges. To
16 matches
Mail list logo
