Re: Region server not accept connections intermittently

I got the dump of the problematic rs from web ui: http://pastebin.com/4hfhkDUw output of "top -H -p ": http://pastebin.com/LtzkScYY I also got the output of jstack but I believe it's already in the dump so I do not paste it again. This time the hang lasted about 20 minutes. 于 2014/7/9 12:48, E

Re: Region server not accept connections intermittently

I noticed the blockSeek() call in HFileReaderV2. Did you take only one dump during the 20 minute hang ? Cheers On Jul 10, 2014, at 1:54 AM, Rural Hunter wrote: > I got the dump of the problematic rs from web ui: http://pastebin.com/4hfhkDUw > output of "top -H -p ": http://pastebin.com/LtzkSc

Re: error during Hbase running

Hey, +user@hbase Make sure you are placing 2.4 version hadoop jars in hbase/lib folder so that HBase picks correct jars during runtime. This needs to be done across all the nodes in the cluster. - Bharath On Thu, Jul 10, 2014 at 1:57 PM, Prashasti Agrawal < prashasti.iit...@gmail.com> wrote:

Re: error during Hbase running

Prashasti: In you mvn command I noticed that assembly:single was missing. Is this a typo ? Btw there is no hadoop-core jar for Hadoop 2.4.0 Cheers On Jul 10, 2014, at 2:16 AM, Bharath Vissapragada wrote: > Hey, > > +user@hbase > > Make sure you are placing 2.4 version hadoop jars in hbase/l

Re: Region server not accept connections intermittently

Yes, I can take more if needed when it happens next time. 于 2014/7/10 17:11, Ted Yu 写道: I noticed the blockSeek() call in HFileReaderV2. Did you take only one dump during the 20 minute hang ? Cheers

how to measure IO on HBase

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

Re: how to measure IO on HBase

Please see chapter 17 of refguide. Especially http://hbase.apache.org/book.html#ops.monitoring Cheers On Jul 10, 2014, at 2:51 AM, sahanashankar wrote: > 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 t

Need help on RowFilter

Hi Team, Could you please help me to resolve below issue. In my hbase table, i've a 30 records. I need to retrieve records based on list of rowkeys. I'm using below code base. It is not giving records HTable table = new HTable(configuration, tableName); List filters = new ArrayList(); Filter row

Re: Need help on RowFilter

HI Rajesh, If you know the rowkeys already, you don't need to perform a scan, you can just perform a get on the list of rowkeys e.g. List RowKeyList = new ArrayList(); # for each rowkey RowKeyList.add(new Get(Bytes.toBytes(rowkey))); Result[] results = table.get(RowKeyList); for (Result r

Re: Need help on RowFilter

Hi Ian, Thank you very much of the solution. Could you please explain at what are the use cases we need to use RowFilter? Regards, Rajesh On Thu, Jul 10, 2014 at 4:48 PM, Ian Brooks wrote: > HI Rajesh, > > If you know the rowkeys already, you don't need to perform a scan, you can > just perfo

Re: Need help on RowFilter

Hi Rajesh >From personal use, the rowFilter allows for finer grained results when >performing a large scan where the row keys don't exaclty match your criteria. >For example if you use start and end rows to constrain your scan, the results >may contain some results that you don't want and you c

Re: Need help on RowFilter

Hi Ian, Thank you very much Regards, Rajesh On Thu, Jul 10, 2014 at 5:16 PM, Ian Brooks wrote: > Hi Rajesh > > From personal use, the rowFilter allows for finer grained results when > performing a large scan where the row keys don't exaclty match your > criteria. For example if you use start

Re: Need help on RowFilter

Hi Rajesh, It looks like the filter list combines filters with 'AND' operator. In your case you had two 'equal' rowfilters and expected each return a result. Mingtao Sent from iPhone > On Jul 10, 2014, at 7:08 AM, Madabhattula Rajesh Kumar > wrote: > > Rajesh

Re: reply： Why PageFilter returning less rows than it should be?

somefilter is added to flo and fla. Are they the same instance of some filter class ? Cheers On Wed, Jul 9, 2014 at 10:29 PM, Michael Calvin <77231...@qq.com> wrote: > I'm sorry that was an unfinished mail. The proper one comes next. > But I believe it contains the essential: FilterLists insid

incremental cluster backup using snapshots

Hi, Does new hbase version(>0.99) supports incremental backup using snapshots? If not supported in current releases, is it planned to add in future releases? can we export snapshots to local file system directly? Thanks oc.tsdb

?????? reply?? Why PageFilter returning less rows than it should be?

Nope -- Michael.Calvin.Shi