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[HBASE-6857] Investigate slow operations - HBase - [issue]
...We see that occassionally regionservers have a spate of slow operations.Need to look into what is causing this....
http://issues.apache.org/jira/browse/HBASE-6857    Author: Amitanand Aiyer, 2012-09-22, 02:29
[HBASE-6747] Enable server side limit default on the size of results returned (to prevent OOMs) - HBase - [issue]
...We have seen a couple of situations where clients fetching a large row can cause the whole server to go down, due to large GC pauses/Out of memory error.This should be easily avoidable, if t...
http://issues.apache.org/jira/browse/HBASE-6747    Author: Amitanand Aiyer, 2012-09-10, 21:33
[HBASE-6630] Port HBASE-6590 to trunk : Assign sequence number to bulk loaded files - HBase - [issue]
...Currently bulk loaded files are not assigned a sequence number. Thus, they can only be used to import historical data, dating to the past. There are cases where we want to bulk load "current...
http://issues.apache.org/jira/browse/HBASE-6630    Author: Amitanand Aiyer, 2012-09-10, 17:29
[HBASE-6590] [0.89-fb] Assign sequence number to bulk loaded data - HBase - [issue]
...Currently bulk loaded files are not assigned a sequence number. Thus, they can only be used to import historical data, dating to the past. There are cases where we want to bulk load "current...
http://issues.apache.org/jira/browse/HBASE-6590    Author: Amitanand Aiyer, 2012-09-09, 00:40
[HBASE-6741] Detect duplicate assignment more accurately - HBase - [issue]
...Currently, the duplicate detection logic does not differentiate if the two duplicate updates are from the same rs or different RS.Have seen issues where a duplicate notification from the sam...
http://issues.apache.org/jira/browse/HBASE-6741    Author: Amitanand Aiyer, 2012-09-07, 19:47
[HBASE-6672] Split reads/writes from HBaseClient into smaller chunks, to avoid allocating large directMemoryBuffers - HBase - [issue]
...HBaseServer seems to already have this fix. HBaseClient does not. Seen some issue with reading a large KV....
http://issues.apache.org/jira/browse/HBASE-6672    Author: Amitanand Aiyer, 2012-08-28, 01:43
[HBASE-6494] Add a delete option to Performance Evaluation - HBase - [issue]
...extend performance evaluation to do deletes on the table.will allow us to benchmark/test regression in performance for changes to the delete path....
http://issues.apache.org/jira/browse/HBASE-6494    Author: Amitanand Aiyer, 2012-08-01, 23:42
[HBASE-6452] get rid of processSingleMultiput - HBase - [issue]
...HConnectionManager has processSingleMultiPut and processBatchOfMultiPut which are both very similar. Integrating both....
http://issues.apache.org/jira/browse/HBASE-6452    Author: Amitanand Aiyer, 2012-07-25, 03:07
Re: Slow row deletion performance in comparison to insertion - HBase - [mail # user]
...There was some difference in the way locks are taken for batched deletes an d puts.  This was fixed for 89.  I wonder if the same could be the issue here.  Sent from my iPhone...
   Author: Amitanand Aiyer, 2012-06-27, 22:05
Re: delete rows from hbase - HBase - [mail # user]
...You could set up a scan with the criteria you want (start row, end row, keyonlyfilter etc), and do a delete for The rows you get.  On 6/18/12 3:08 PM, "Oleg Ruchovets"  wrote: &nbs...
   Author: Amitanand Aiyer, 2012-06-18, 23:36
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