Anoop Sam John
Stephen Yuan Jiang
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[HBASE-7477] Remove Proxy instance from HBase RPC
...Currently, we use HBaseRPC.getProxy() to get an Invoker object to serialize the RPC parameters. This is pretty inefficient as it uses reflection to lookup the current method name.The aim is ...
, 2013-04-30, 23:32
[HBASE-6770] Allow scanner setCaching to specify size instead of number of rows
...Currently, we have the following api's to customize the behavior of scans:setCaching() - how many rows to cache on client to speed up scanssetBatch() - max columns per row to return per row ...
, 2013-04-25, 19:04
[HBASE-6923] Create scanner benchmark
...Create a simple program to benchmark performance/throughput of scanners, and print some results at the end....
, 2013-04-25, 19:03
[HBASE-5783] Faster HBase bulk loader
...We can get a 3x to 4x gain based on a prototype demonstrating this approach in effect (hackily) over the MR bulk loader for very large data sets by doing the following:1. Do direct multi-put...
, 2013-03-24, 05:17
[HBASE-6423] Writes should not block reads on blocking updates to memstores
...We have a big data use case where we turn off WAL and have a ton of reads and writes. We found that:1. flushing a memstore takes a while (GZIP compression)2. incoming writes cause the new me...
, 2012-12-18, 02:19
[HBASE-6583] Enhance Hbase load test tool to automatically create column families if not present
...The load test tool currently disables the table and applies any changes to the cf descriptor if any, but does not create the cf if not present....
, 2012-12-03, 21:47
[HBASE-7068] Create a Get benchmark
, 2012-10-29, 23:47
[HBASE-6619] Do no unregister and re-register interest ops in RPC
...While investigating perf of HBase, Michal noticed that we could cut about 5-40% (depending on number of threads) from the total get time in the RPC on the server side if we eliminated re-reg...
, 2012-10-04, 23:49
[HBASE-4707] Avoid unnecessary DNS lookups for locality computation in HMaster
...We recently hit an issue where upon each RS heartbeat we were looking up and resolving DNS name + address of the RS in the master, but needed it only for locality based assignment on startup...
, 2012-08-28, 20:17
[HBASE-4672] Ability to expand HBase racks gracefully
...When a HBase cell gets pretty saturated on top-of-rack bandwidth, then adding another rack of regionservers actually hurts. This is a task to be able to gracefully expand the cluster...
, 2012-08-28, 18:46
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