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Re: the scan will be executed parallel if not use coprocessor? - HBase - [mail # user]
...The HBase by default does not use parallel scanning mechanism.  It is sequential.  There are some JIRA that try to implement scanning in parallel on the regions.  HBASE-1935 i...
   Author: ramkrishna vasudevan, 2013-07-15, 04:15
Re: Region server going down when deleting a table from HBase - HBase - [mail # user]
...Yes it creates the reader and then deletes the reader if the rename fails.   On Thu, Jul 11, 2013 at 8:09 PM, Anoop John  wrote:  ...
   Author: ramkrishna vasudevan, 2013-07-11, 16:08
[expand - 2 more] - Re: question about clienttrace logs in hdfs and shortcircuit read - HBase - [mail # user]
...I was checking with the trunk code and i saw that  /**    * Number of checksum verification failures. It also    * clears the counter.    */   public ...
   Author: ramkrishna vasudevan, 2013-07-05, 07:30
Re: Calculating size in HBase. - HBase - [mail # user]
...If you are trying to calculate the data size that is already loaded into HBase, you can use the UI to see the number of store files and the size of store files to know the size of the data i...
   Author: ramkrishna vasudevan, 2013-07-05, 03:58
Re: Deleting range of rows from Hbase. - HBase - [mail # user]
...Coprocessors and endpoints are slighlty different but the BulkDeleteEndpoint gives you the provision to do the functionality that you need.  Basically the code gets executed in all the ...
   Author: ramkrishna vasudevan, 2013-07-04, 15:37
Re: puzzle about hbase row update - HBase - [mail # user]
...There are no updates.  It just adds one more version to the existing row.  You can try out from the HBase shell.  http://hbase.apache.org/book.html - will give an idea on the ...
   Author: ramkrishna vasudevan, 2013-07-02, 08:29
Re: Adding a new region server or splitting an old region in a Hash-partitioned HBase Data Store - HBase - [mail # user]
...I would suggest you could write a custom load balancer and then have your hashing algo to determine how the load balancing should happen.  Hope this helps.  Regards Ram   On F...
   Author: ramkrishna vasudevan, 2013-06-28, 03:39
[expand - 2 more] - Re: Minor versions for HFile and HFileBlock - HBase - [mail # dev]
...Thanks for the comments.  So i hope the approach that am following is correct.  Regards Ram   On Thu, Jun 20, 2013 at 9:45 PM, Andrew Purtell  wrote:  ...
   Author: ramkrishna vasudevan, 2013-06-20, 17:48
Re: SSD vs Spinning disks - HBase - [mail # user]
...Currently this feature is not available.  But there is a JIRA that has been raised to help in achieving this. https://issues.apache.org/jira/browse/HBASE-6572.  Feel free to give y...
   Author: ramkrishna vasudevan, 2013-06-11, 00:48
[expand - 4 more] - Re: Questions about HBase - HBase - [mail # user]
...index cache could be a useful feature for many workflows. Would it be a good idea to have a JIRA for that? I would suggest yes.  You can log the details that you observed and can discus...
   Author: ramkrishna vasudevan, 2013-06-06, 03:15
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