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[HBASE-8599] HLogs in ZK are not cleaned up when replication lag is minimal - HBase - [issue]
...On a cluster with very low replication lag (as measured by ageOfLastShippedOp on source), we found HLogs accumulating and not being cleaned up as new WAL(s) are rolled.Each time, we call log...
http://issues.apache.org/jira/browse/HBASE-8599    Author: Varun Sharma, 2013-07-24, 20:08
Re: EC2 instance type recommendation ? - HBase - [mail # user]
...We have both c1.xlarge and hi1.4xlarge clusters at Pinterest. We have used the following guidelines:  1) hi1.4xlarge - small data sets, random read heavy and IOPs bound - very expensive...
   Author: Varun Sharma, 2013-07-16, 19:08
[HBASE-8370] Report data block cache hit rates apart from aggregate cache hit rates - HBase - [issue]
...Attaching from mail to [EMAIL PROTECTED]I am wondering whether the HBase cachingHitRatio metrics that the region server UI shows, can get me a break down by data blocks. I always see this nu...
http://issues.apache.org/jira/browse/HBASE-8370    Author: Varun Sharma, 2013-07-11, 02:16
Re: GC recommendations for large Region Server heaps - HBase - [mail # user]
...Hi Suraj,  One thing I have observed is that if you very high block cache churn which happens in a ready heavy workload - a full GC eventually happens because more block cache blocks bl...
   Author: Varun Sharma, 2013-07-10, 03:20
Re: optimizing block cache requests + eviction - HBase - [mail # user]
...FYI, if u disable your block cache - you will ask for "Index" blocks for every single request. So such a high rate of request is plausible for Index blocks even when your requests are totall...
   Author: Varun Sharma, 2013-07-08, 23:50
Re: Puzzling behaviour with HBase checksums - HBase - [mail # dev]
...Created https://issues.apache.org/jira/browse/HDFS-4960.  Thanks !   On Sat, Jul 6, 2013 at 3:55 PM, Stack  wrote:  ...
   Author: Varun Sharma, 2013-07-07, 16:38
Re: 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
Re: Issues with delete markers - HBase - [mail # user]
...I mean version tracking with delete markers...   On Mon, Jul 1, 2013 at 8:17 AM, Varun Sharma  wrote:  ...
   Author: Varun Sharma, 2013-07-01, 15:18
Re: 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-8815] A replicated cross cluster client - HBase - [issue]
...I would like to float this idea for brain storming.HBase is a strongly consistent system modelled after bigtable which means a machine going down results in loss of availability of around 2 ...
http://issues.apache.org/jira/browse/HBASE-8815    Author: Varun Sharma, 2013-06-28, 04:47
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