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Re: Documentation for append - HBase - [mail # user]
...I have just gone through the code and trying answering ur questions. to an existing cell. Yes Yes No. It is new cell . There is no actual cell update in HBase append to? No u cant. It append...
   Author: Anoop John, 2013-05-08, 13:07
Re: Endpoint vs. Observer Coprocessors - HBase - [mail # user]
...Didn't follow u completely. Can u tell us little more on your usage. How exactly the endpoint to be related with the CP hook (u said postPut)  -Anoop-   On Fri, May 3, 2013 at 4:04...
   Author: Anoop John, 2013-05-03, 11:34
Re: Very poor read performance with composite keys in hbase - HBase - [mail # user]
...Navis         Thanks for the issue link. Currently the read queries will start MR jobs as usual for reading from HBase. Correct?  Is there any plan for supporting no...
   Author: Anoop John, 2013-05-02, 04:01
[expand - 1 more] - Re: max regionserver handler count - HBase - [mail # user]
...If you can make use of the batch API  ie.  get(List) you can reduce the handlers (and no# of RPC calls also).. One batch will use one handler. I have not checked with asynchbase. &...
   Author: Anoop John, 2013-04-30, 07:03
Re: writing and reading from a region at once - HBase - [mail # user]
...could fail silently  Which version you are using?  How you say writes missed silently?  The current read, which was going on, has not returned the row that you just wrote? &nb...
   Author: Anoop John, 2013-04-26, 04:08
Re: HBase - Performance issue - HBase - [mail # user]
...Hi            How many request handlers are there in ur RS?  Can you up this number and see?  -Anoop- On Wed, Apr 24, 2013 at 3:42 PM, kzurek  wr...
   Author: Anoop John, 2013-04-24, 10:29
Re: Overwrite a row - HBase - [mail # user]
...You can use MultiRowMutationEndpoint for atomic op on multiple rows (within same region)..   On Sun, Apr 21, 2013 at 5:55 AM, Ted Yu  wrote:  ...
   Author: Anoop John, 2013-04-21, 07:39
Re: Essential column family performance - HBase - [mail # user]
...Agree here. The effectiveness depends on what % of data satisfies the condition, how it is distributed across HFile blocks. We will get performance gain when the we will be able to skip some...
   Author: Anoop John, 2013-04-08, 17:10
Re: Regionserver goes down while endpoint execution - HBase - [mail # user]
...I dont have any sample code to share with you.  Instead of calling HTable#put() from the postPut() impl, add these Put objects (Index table Put) to some Q and the CP flow immediately co...
   Author: Anoop John, 2013-03-26, 17:17
Re: Compaction problem - HBase - [mail # user]
...How many regions per  RS? And CF in table? What is the -Xmx for RS process? You will bget 35% of that memory for all the memstores in the RS. hbase.hregion.memstore.flush.size = 1GB!! &...
   Author: Anoop John, 2013-03-22, 14:51
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