Hi, Yun:
Take a look at HBASE-5416 (Improve performance of scans with some kind of
filters) which is in 0.94.5 release.
In your case, you can use a filter which specifies column C as the
essential family.
Here I interpret column C as column family.
Cheers
On Sat, Mar 9, 2013 at 11:11 AM, yun
Hi, Ted and Anoop, thanks for your notes.
I am talking about column rather than column family, since physically column
family should be able to perform efficiently (storage layer, CF's are stored
separately). But columns of the same column family may be mixed physically, and
that makes filters
bq. physically column family should be able to perform efficiently (storage
layer
When you scan a row, data for different column families would be brought
into memory (if you don't utilize HBASE-5416)
Take a look at:
As per the above said, you will need a full table scan on that CF.
As Ted said, consider having a look at your schema design.
-Anoop-
On Sun, Mar 10, 2013 at 8:10 PM, Ted Yu yuzhih...@gmail.com wrote:
bq. physically column family should be able to perform efficiently (storage
layer
When
Congratulations, Anoop.
Keep up the good work.
On Sun, Mar 10, 2013 at 9:42 AM, ramkrishna vasudevan
ramkrishna.s.vasude...@gmail.com wrote:
Hi All
Pls welcome Anoop, our newest committer. Anoop's work in HBase has been
great and he has helped lot of users in the mailing list.
He has
Congrats Welcome Anoop!!
Best Regards,
Anil
On Mar 10, 2013, at 9:58 AM, Ted Yu yuzhih...@gmail.com wrote:
Congratulations, Anoop.
Keep up the good work.
On Sun, Mar 10, 2013 at 9:42 AM, ramkrishna vasudevan
ramkrishna.s.vasude...@gmail.com wrote:
Hi All
Pls welcome Anoop, our
Great job Anoop! Keep up the good work.
- Jesse Yates
Sent from my iPhone
On Mar 10, 2013, at 9:42 AM, ramkrishna vasudevan
ramkrishna.s.vasude...@gmail.com wrote:
Hi All
Pls welcome Anoop, our newest committer. Anoop's work in HBase has been
great and he has helped lot of users in the
Hi,
Is it fine to use same column name for 2 different column families?
For example,
In a table emp,
can we have column name dob under column family F1 F2?
Please let me know the impact of having like this if any...
Note : I don't want to use dob1 or some other field name for the second
Ya sure you can have that... as you always specify columnfamily to read out
of hbase, i dont think there should be a problem in that.
∞
Shashwat Shriparv
On Sun, Mar 10, 2013 at 11:41 PM, Ramasubramanian Narayanan
ramasubramanian.naraya...@gmail.com wrote:
Hi,
Is it fine to use same
That combo should be fine.
Great!!
If JVM is full GC'ing, the application is stopped.
The below does not look like a full GC but that is a long pause in system
time, enough to kill your zk session.
Exactly. This pause is really making the zk expire the RS which
shutsdown (logs
in the end
Hi Stack/Ted/Pablo,
Should we increase the hbase.rpc.timeout property to 5 minutes ( 30 ms
) ?
Regards,
- Sreepathi
On Sun, Mar 10, 2013 at 11:59 AM, Pablo Musa pa...@psafe.com wrote:
That combo should be fine.
Great!!
If JVM is full GC'ing, the application is stopped.
The below
lol
On Sun, Mar 10, 2013 at 7:29 PM, Dan Han dannahan2...@gmail.com wrote:
I would like to unsubscribe now as the email is huge. Thanks.
Best Wishes
Dan Han
--
Regards,
Ouch Whisper
010101010101
Congrats Anoop. Welcome.
(Don't break the tests :) )
From: ramkrishna vasudevan ramkrishna.s.vasude...@gmail.com
To: d...@hbase.apache.org; user@hbase.apache.org
Sent: Sunday, March 10, 2013 9:42 AM
Subject: Welcome our newest Committer Anoop
Hi All
Pls
No problem, Dan.
From: Dan Han dannahan2...@gmail.com
To: user@hbase.apache.org
Sent: Sunday, March 10, 2013 12:36 PM
Subject: Re: unsubscribe request
Embarassing! It was supposed to send to another email address. Sorry about
this.
Best Wishes
Dan Han
On
Hi Sreepathi,
they say in the book (or the site), we could try it to see if it is
really a timeout error
or there is something more. But it is not recomended for production
environments.
I could give it a try if five minutes will ensure to us that the problem
is the GC or
elsewhere!! Anyway,
You could increase your zookeeper session timeout to 5 minutes while you
are figuring why these long pauses.
http://hbase.apache.org/book.html#zookeeper.session.timeout
Above, there is an outage for almost 5 minutes:
We slept 225100ms instead of 3000ms, this is likely due to a long
You have
Good on you Anoop!
St.Ack
On Sun, Mar 10, 2013 at 9:42 AM, ramkrishna vasudevan
ramkrishna.s.vasude...@gmail.com wrote:
Hi All
Pls welcome Anoop, our newest committer. Anoop's work in HBase has been
great and he has helped lot of users in the mailing list.
He has contributed features
Congratulations Anoop. Welcome!
On Mon, Mar 11, 2013 at 12:42 AM, ramkrishna vasudevan
ramkrishna.s.vasude...@gmail.com wrote:
Hi All
Pls welcome Anoop, our newest committer. Anoop's work in HBase has been
great and he has helped lot of users in the mailing list.
He has contributed
Just curious, won't ROWCOL bloom filter works for this case?
Best Regards,
Raymond Liu
As per the above said, you will need a full table scan on that CF.
As Ted said, consider having a look at your schema design.
-Anoop-
On Sun, Mar 10, 2013 at 8:10 PM, Ted Yu yuzhih...@gmail.com
Hi Pablo,
It'a terrible for a long minor GC. I don't think there are swaping from
your vmstat log.
but I just suggest you
1) add following JVM options:
-XX:+DisableExplicitGC -XX:+UseCompressedOops -XX:GCTimeRatio=19
-XX:SoftRefLRUPolicyMSPerMB=0 -XX:SurvivorRatio=2
-XX:MaxTenuringThreshold=3
Pablo,
another, what's your java version?
On Mon, Mar 11, 2013 at 10:13 AM, Azuryy Yu azury...@gmail.com wrote:
Hi Pablo,
It'a terrible for a long minor GC. I don't think there are swaping from
your vmstat log.
but I just suggest you
1) add following JVM options:
-XX:+DisableExplicitGC
Be careful with GC tuning, throwing changes at an application without
analysis of what is going on with the heap is shooting in the dark. One
particular good treatment of the subject is here:
http://java.dzone.com/articles/how-tame-java-gc-pauses
If you have made custom changes to blockcache or
Thanks to all.. Hope to work more and more for HBase!
-Anoop-
From: Andrew Purtell [apurt...@apache.org]
Sent: Monday, March 11, 2013 7:33 AM
To: user@hbase.apache.org
Subject: Re: Welcome our newest Committer Anoop
Congratulations Anoop. Welcome!
On
Congrats Anoop. Great work!
Regards,
Uma
From: ramkrishna vasudevan [ramkrishna.s.vasude...@gmail.com]
Sent: Sunday, March 10, 2013 10:12 PM
To: d...@hbase.apache.org; user@hbase.apache.org
Subject: Welcome our newest Committer Anoop
Hi All
Pls welcome
Contratulations Anoop!
From: Anoop Sam John [anoo...@huawei.com]
Sent: Monday, March 11, 2013 9:00 AM
To: user@hbase.apache.org
Subject: RE: Welcome our newest Committer Anoop
Thanks to all.. Hope to work more and more for HBase!
-Anoop-
ROWCOL bloom says whether for a given row (rowkey) a given column (qualifier)
is present in an HFile or not. But for the user he dont know the rowkeys. He
wants all the rows with column 'x'
-Anoop-
From: Liu, Raymond [raymond@intel.com]
Sent:
can we have column name dob under column family F1 F2?
Just fine.. Go ahead.. :)
-Anoop-
From: Ramasubramanian Narayanan [ramasubramanian.naraya...@gmail.com]
Sent: Sunday, March 10, 2013 11:41 PM
To: user@hbase.apache.org
Subject: can we use same column
As note of caution just don have two empty qualifiers in the same CF but u
can still have empty qualifiers in diff CFs.
Regards
Ram
On Mon, Mar 11, 2013 at 10:20 AM, Anoop Sam John anoo...@huawei.com wrote:
can we have column name dob under column family F1 F2?
Just fine.. Go ahead.. :)
Hmm, I don't mean query bloom filter directly. I mean the storefilescanner will
query rowcol bloomfilter to see is it need a seek or not. And I guess this will
be performed on every row without need to specific a row keys?
ROWCOL bloom says whether for a given row (rowkey) a given column
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