Re: can read operation be performed during the execution of major compaction

2014-10-24 Thread sahanashankar
7;s newly created file for any subsequent read > requests. Any read requests that come in during the compaction will be > answered from the files already there and the memstore. > > On Mon, Oct 20, 2014 at 8:52 AM, sahanashankar <[hidden email] > <http://user/SendEmail.jtp?type=node

can read operation be performed during the execution of major compaction

2014-10-20 Thread sahanashankar
Hello, I am trying to understand the working of major compaction and i am wondering if a read operation can be performed while the major compaction process is running on HBase. Will the read operation be queued and start after major compaction has finished executing? or can both execute together?

Usage of HBase Slow Query Log

2014-07-17 Thread sahanashankar
Hello, I am having difficulty in understanding how to use the HBase Slow Query Log. I understand the theory and its intended use but i am facing problems with its implementation. Can somebody please guide me to any such example implementation of slow query log so that i get an idea of how to use

Re: how to measure IO on HBase

2014-07-15 Thread sahanashankar
> Cheers > > On Jul 10, 2014, at 2:51 AM, sahanashankar <[hidden email] > <http://user/SendEmail.jtp?type=node&node=4061208&i=0>> wrote: > > > Hello, > > > > I have a HBase cluster of 1 Master node and 5 Region Servers deployed on > > HDFS

how to measure IO on HBase

2014-07-10 Thread sahanashankar
Hello, I have a HBase cluster of 1 Master node and 5 Region Servers deployed on HDFS. What is the best way to measure IO for the operations on cluster such as 1. Scan 2. Get 3. Put I need to conduct the measurement in 2 scenarios. In the first scenario, a have a simple table (size > 1GB), co