Scan Performance Decreases Over Time

Hi All, I met with a problem where the scan perfoamance decreases over time. Hbase connections are kept in a data access service (in tomcat), and there are table scan operations. The scan performance for each scan batch(~10 parallel scan) increases as below: dayavg. cost(ms) 156.213115

Re:is possible to create multiple TableSplit per region?

here is an archived mail: http://mail-archives.apache.org/mod_mbox/hbase-user/201303.mbox/%3cblu0-smtp19115a8967869d6cf0d49ef8f...@phx.gbl%3E At 2016-07-13 23:20:28, "Frank Luo" wrote: >We have mapper only jobs operating on a result of a Scan. Because of heavy >work

Re:Re: Poor performance of table Increment

and see how long that takes? > >-- Lars > > From: 陆巍 <luwei...@163.com> > To: user@hbase.apache.org > Sent: Saturday, July 9, 2016 3:14 AM > Subject: Poor performance of table Increment > >Hi, > >I had a test for Increment operation, and find the p

Re:Re: Poor performance of table Increment

thanks Ted, It is very related. I am using 1.0 and will upgrade to 1.2 for another test. At 2016-07-09 19:45:51, "Ted Yu" <yuzhih...@gmail.com> wrote: >Which release of hbase are you using ? > >Does it include HBASE-15213 ? > >Thanks > >On Sat, Jul 9,

Poor performance of table Increment

Hi, I had a test for Increment operation, and find the performance is really bad: 94809ms for 1000 increment operaions. The testing cluster is pretty small with only three region servers. Below is the code for testing. Is there any bentchmark result for htable increment? Thanks! import