Eric ,
why you are trying to run thrift on all the server.why don't you run on
only master machine . Really after seeing your post i also had this doubt
whether we need separate thrift setup or not ? Is it enough to run thrift
on single machine .
Thanks and Regards,
S SYED
Hello there,
I designed a row key for queries that need best performance (~100 ms) which
looks like this:
userId-date-sessionId
These queries(scans) are always based on a userId and sometimes additionally on
a date, too.
That's no problem with the key above.
However, another kind of queries
Hi Chris:
I'm thinking about building a secondary index for primary key lookup, then
query using the primary keys in parallel.
I'm interested to see if there is other option too.
Best Regards,
Jerry
On Tue, Jul 31, 2012 at 11:27 AM, Christian Schäfer syrious3...@yahoo.dewrote:
Hello there,
When deciding between a table scan vs secondary index, you should try to
estimate what percent of the underlying data blocks will be used in the
query. By default, each block is 64KB.
If each user's data is small and you are fitting multiple users per block,
then you're going to need all the
I think you could do it manually by looking up all the different
regions and starting a separate scan for each region. Not quite as
handy as the built-in multi get, but essentially the same.
Of course, that leaves the question of processing-- If you're
processing it in a single-threaded
What do you mean by using TS as version? Are you determining the ts long value
before and then setting it in the Put object? If so, I think you can use a
specific cell as a counter (Sequence in Oracle language, or Auto Increment
column in MySQL). In that case of course you need the value of the
On Mon, Jul 30, 2012 at 11:13 PM, Pablo Musa pa...@psafe.com wrote:
Hey guys,
in my application the HBase timestamp is used as version in my logic.
I would like to know what is the best way to insert a new record and get its
timestamp.
I have come up with two possibilities:
/* I could
On Tue, Jul 31, 2012 at 12:32 PM, Eric eric.x...@gmail.com wrote:
I'm currently running thrift on all region server nodes. The reasoning is
that you can run jobs on this cluster and these jobs, when using thrift,
can connect to localhost.
The drawback is that I'm running lots of thrift daemons
What do you mean by using TS as version?
My application uses versioning between client and server. So I am using the
timestamp as a version.
Are you determining the ts long value before and then setting it in the Put
object? If so, I think you can
use a specific cell as a counter. In that
Which release?
On Jul 31, 2012, at 5:13 PM, Mohit Anchlia mohitanch...@gmail.com wrote:
I am seeing null row key and I am wondering how I got the nulls in there.
Is it possible when using HBaseClient that a null row might have got
inserted?
HBase 90.4
On Tue, Jul 31, 2012 at 4:18 PM, Michael Segel michael_se...@hotmail.comwrote:
Which release?
On Jul 31, 2012, at 5:13 PM, Mohit Anchlia mohitanch...@gmail.com wrote:
I am seeing null row key and I am wondering how I got the nulls in there.
Is it possible when using
Not sure how but I am getting one null row per 9 writes when I do a GET in
result.getRow(). Is it even possible to write null rows?
On Tue, Jul 31, 2012 at 4:49 PM, Mohit Anchlia mohitanch...@gmail.comwrote:
HBase 90.4
On Tue, Jul 31, 2012 at 4:18 PM, Michael Segel
Hi all,
Something has changed in how OSX and java handles IPv6, and now you
will get a log like:
2012-07-31 18:21:39,824 INFO org.apache.hadoop.hbase.master.HMaster:
Server active/primary master; 0:0:0:0:0:0:0:0%0,
59736,1343784093521, sessionid=0x138dfc60416, cluster-up flag was=false
-Djava.net.preferIPv4Stack=true ?
Does that still work?
On Tue, Jul 31, 2012 at 6:24 PM, Ryan Rawson ryano...@gmail.com wrote:
Hi all,
Something has changed in how OSX and java handles IPv6, and now you
will get a log like:
2012-07-31 18:21:39,824 INFO
I shall try that. I submitted a patch too that quashes the extra %
where it is causing problems.
On Tue, Jul 31, 2012 at 6:28 PM, Andrew Purtell apurt...@apache.org wrote:
-Djava.net.preferIPv4Stack=true ?
Does that still work?
On Tue, Jul 31, 2012 at 6:24 PM, Ryan Rawson
Hello Manu,
Use only one HTable instance at a time, and do not forget to
close it once you are done. If you need multiple HTables, use
HTablePool class instead. HTablePool acts as a pool for all tables.
Regards,
Mohammad Tariq
On Wed, Aug 1, 2012 at 9:55 AM, Manu S manupk...@gmail.com
Hello Mohit,
It is advised not to go above two or three column families.
This is because, when we have many column families, the flushing and
compaction can cause too many needless i/o operations, thus reducing
the performance.
As far as versions are concerned, default value is 3.
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