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Anoop Sam John
Stephen Yuan Jiang
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[HBASE-7067] HBase Get perf improvements
...Umbrella task for improving Get performance....
, 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
[HBASE-4668] List HDFS enhancements to speed up backups for HBase
...There are a host of improvements that help: HDFS fast copy Various enhancements to fast copy to speed up things File level hard links - which does ext3 hardlinks instead of copying blocks th...
, 2012-08-28, 18:44
[HBASE-6360] Thrift proxy does not emit runtime metrics
...Open jconsole against a thrift proxy, and you will not find the rumtime stats that it should be exporting....
, 2012-07-10, 00:30
[HBASE-4655] Document architecture of backups
...Basic idea behind the backup architecture for HBase...
, 2012-06-07, 10:29
[HBASE-4667] Importer for exported tables
...Once HBase tables are backed up to a well known location, we need to be able to import them. A few flavors need to be supported here:1. Running cluster or a cluster that is not up and runnin...
, 2012-05-31, 18:10
[HBASE-4663] MR based copier for copying HFiles
...This copier is a modification of the distcp tool in HDFS. It does the following:1. List out all the regions in the HBase cluster for the required table2. Write the above out to a file3. Each...
, 2012-05-23, 15:51
[HBASE-4661] Ability to export the list of files for a some or all column families for a given region
...Should be able to query the regionservers to figure out the list of files in one/some/all column families for a given regions to determine which files to copy for a backup....
, 2012-03-02, 06:15
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