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Re: HBase performance evaluation - HBase - [mail # dev]
...HBase is primarily a storage system, not a computation system, so there areno CPU-bound workloads as such. I suppose you can try to artificiallyincrease CPU load on the RegionServers by usin...
   Author: Nick Dimiduk, 2014-03-31, 16:37
[HBASE-10841] Scan setters should consistently return this - HBase - [issue]
...While addressing review comments on HBASE-10818, I noticed that our Scan class is inconsistent with it's setter methods. Some of them return this, other's don't. They should be consistent. I...
http://issues.apache.org/jira/browse/HBASE-10841    Author: Nick Dimiduk, 2014-03-26, 17:26
[HBASE-10818] Add integration test for bulkload with replicas - HBase - [issue]
...Should verify bulkload is not affected by region replicas....
http://issues.apache.org/jira/browse/HBASE-10818    Author: Nick Dimiduk, 2014-03-26, 16:57
Re: Test HBase throughput with ycsb - HBase - [mail # dev]
...I'll add: YCSB is able to run mixed read and write workload while PerfEvaldoes not. This is something I'd like to add in the future. Last I looked,the official YCSB didn't support HBase vers...
   Author: Nick Dimiduk, 2014-03-25, 05:14
[HBASE-10820] Bulkload: something is going bananas with '_tmp' - HBase - [issue]
...While working on HBASE-10818, I noted the following in my logs2014-03-24 15:26:25,283 INFO  [RpcServer.handler=24,port=52056] regionserver.HStore: Successfully loaded store file file:/U...
http://issues.apache.org/jira/browse/HBASE-10820    Author: Nick Dimiduk, 2014-03-25, 02:59
Re: Backup HMasters will go down if the zk connection expires without recovery - HBase - [mail # dev]
...I agree that resuming the process is best handled by site-local tooling.Could be we do a better job of informing that tooling regarding the natureof the failure. Well defined exit codes, for...
   Author: Nick Dimiduk, 2014-03-21, 16:37
[HBASE-10792] RingBufferTruck does not release its payload - HBase - [issue]
...Run a write-heavy workload (PerfEval sequentialWrite) out of a trunk sandbox and watch as HBase eventually dies with an OOM: heap space. Examining the heap dump shows an extremely large reta...
http://issues.apache.org/jira/browse/HBASE-10792    Author: Nick Dimiduk, 2014-03-20, 17:23
Re: Eventual consistency in Hbase - HBase - [mail # user]
...Consistency between replicated clusters (across data centers) isasynchronous and can also be considered "eventual". From within a singlecluster, only a single node is responsible for serving...
   Author: Nick Dimiduk, 2014-03-17, 19:42
[HBASE-10741] Deprecate HTablePool and HTableFactory - HBase - [issue]
...Per parent ticket, deprecate these ways to retrieve an HTable instance....
http://issues.apache.org/jira/browse/HBASE-10741    Author: Nick Dimiduk, 2014-03-15, 01:12
Re: ClusterConnection package private - HBase - [mail # dev]
...Taking advantage of region replicas will require the indirection andpotential network hop. Could be a "short-circuit" local read optimizationis possible, but I don't think it worth it for sc...
   Author: Nick Dimiduk, 2014-03-14, 22:24
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