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[HBASE-6922] HBase scanner performance improvements - HBase - [issue]
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...Umbrella task for improving through in HBase scanners....
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http://issues.apache.org/jira/browse/HBASE-6922
Author: Karthik Ranganathan,
2012-10-02, 19:19
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[HBASE-4707] Avoid unnecessary DNS lookups for locality computation in HMaster - HBase - [issue]
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...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...
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http://issues.apache.org/jira/browse/HBASE-4707
Author: Karthik Ranganathan,
2012-08-28, 20:17
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[HBASE-4672] Ability to expand HBase racks gracefully - HBase - [issue]
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...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...
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http://issues.apache.org/jira/browse/HBASE-4672
Author: Karthik Ranganathan,
2012-08-28, 18:46
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[HBASE-4668] List HDFS enhancements to speed up backups for HBase - HBase - [issue]
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...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...
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http://issues.apache.org/jira/browse/HBASE-4668
Author: Karthik Ranganathan,
2012-08-28, 18:44
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Re: Thrift2 interface - HBase - [mail # user]
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...Hey Joe, We have tried a few different things wrt the C++ clients and thrift. Just putting out some of out thoughts here. First, we used the existing Thrift proxy as a separate t...
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Author: Karthik Ranganathan,
2012-08-23, 16:15
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[HBASE-6578] Make HDFS block size configurable for HBase WAL - HBase - [issue]
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...Right now, because sync-on-block-close is enabled, HLog causes the disk to stall out on large writes (esp when we cross block boundary).We currently use 256MB blocks. The idea is that if we ...
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http://issues.apache.org/jira/browse/HBASE-6578
Author: Karthik Ranganathan,
2012-08-14, 11:35
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[HBASE-6486] Enhance load test to print throughput measurements - HBase - [issue]
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...Idea is to know how many MB/sec of throughput we are able to get by writing into HBase using a simple tool....
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http://issues.apache.org/jira/browse/HBASE-6486
Author: Karthik Ranganathan,
2012-07-31, 23:14
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[HBASE-6360] Thrift proxy does not emit runtime metrics - HBase - [issue]
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...Open jconsole against a thrift proxy, and you will not find the rumtime stats that it should be exporting....
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http://issues.apache.org/jira/browse/HBASE-6360
Author: Karthik Ranganathan,
2012-07-10, 00:30
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[HBASE-5509] MR based copier for copying HFiles (trunk version) - HBase - [issue]
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...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...
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http://issues.apache.org/jira/browse/HBASE-5509
Author: Karthik Ranganathan,
2012-06-19, 23:45
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[HBASE-4655] Document architecture of backups - HBase - [issue]
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...Basic idea behind the backup architecture for HBase...
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http://issues.apache.org/jira/browse/HBASE-4655
Author: Karthik Ranganathan,
2012-06-07, 10:29
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