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[expand - 5 more] - Poor HBase random read performance - HBase - [mail # dev]
...Going back to leveldb vs hbase, I am not sure if we can come with a clean way to identify HFiles containing more recent data in the wake of compactions  I though wonder if this works wi...
   Author: Varun Sharma , 2013-07-01, 23:10
[expand - 5 more] - Issues with delete markers - HBase - [mail # dev]
...I mean version tracking with delete markers...   On Mon, Jul 1, 2013 at 8:17 AM, Varun Sharma  wrote:  > So, yesterday, I implemented this change via a coprocessor which ba...
   Author: Varun Sharma , 2013-07-01, 15:18
[expand - 1 more] - 30% random performance in 0.95+ - HBase - [mail # dev]
...Actually sending in a separate thread - since it does not really compare different versions of HBase but one version of Block Cache vs FS Cache(through hdfs).   On Sat, Jun 29, 2013 at ...
   Author: Varun Sharma , 2013-06-29, 19:13
[HBASE-8813] Fix time b/w recoverLease invocations from HBASE 8449 - HBase - [issue]
...The time b/w recover lease attempts is conservative but is still not correct. It does not factor in Datanode heartbeat time intervals....
http://issues.apache.org/jira/browse/HBASE-8813    Author: Varun Sharma , 2013-06-28, 02:08
Question about local reads and HDFS 347 - HBase - [mail # dev]
...I was looking at HDFS 347 and the nice long story with impressive benchmarks and that it should really help with region server performance.  The question I had was whether it would stil...
   Author: Varun Sharma , 2013-06-25, 22:10
[expand - 3 more] - Writing unit tests against HBase - HBase - [mail # user]
...Hi Christopher, I am looking into getting maven 3.0.4 installed before i start playing with it.  Elliot, does the HBaseTestingUtility thing run only against DFS. I tried to bring up a M...
   Author: Varun Sharma , 2013-06-20, 23:36
[expand - 1 more] - Replication not suited for intensive write applications? - HBase - [mail # user]
...On Thu, Jun 20, 2013 at 11:10 AM, Asaf Mesika  wrote:  > On Thu, Jun 20, 2013 at 7:12 PM, Varun Sharma  wrote: > > > What is the ageOfLastShippedOp as reported on ...
   Author: Varun Sharma , 2013-06-20, 19:04
Multiple different failures - HBase - [mail # user]
...Are you saying 97 % data was lost or was it offlined until the region servers came back up ?  Varun   On Sat, Jun 1, 2013 at 6:31 PM, Jean-Marc Spaggiari  wrote:  > Hi...
   Author: Varun Sharma , 2013-06-02, 01:51
Major vs Minor compactions - HBase - [mail # user]
...Hi,  I am working on some compaction coprocessors for a column family with versions set to 1. I am using the preCompact hook to wrap a scanner around the compaction scanner.  I wan...
   Author: Varun Sharma , 2013-05-29, 20:27
[expand - 10 more] - RS crash upon replication - HBase - [mail # user]
...But wouldn't a copy table b/w timestamps bring you back since the mutations are all timestamp based we should okay ? Basically doing a copy table which supersedes the downtime interval ? &nb...
   Author: Varun Sharma , 2013-05-23, 16:53