Which HBase version will be released and support Hadoop 0.21.x in the future?

Hi all, I have a question about that which HBase version will be released and support Hadoop 0.21.x in the future? have any roadmap? Thanks. Shen

Re: Long GC pause question

't touch hbase but that could affect it? Like MR > jobs that don't use HBase or something like that? > > J-D > > On Wed, Jan 5, 2011 at 11:44 PM, ChingShen > wrote: > > Hi all, > > > >I encounter a problem about long gc pause cause the region server&

Re: Long GC pause question

Hi St.Ack, Please see the attach file, and there are 3 RS/DN/TT + 1 MS/NN/JT in my cluster. (Hadoop-0.20.2, HBase 0.20.6) Thanks. Shen On Wed, Dec 29, 2010 at 1:34 PM, Stack wrote: > On Tue, Dec 28, 2010 at 6:59 PM, ChingShen > wrote: > > But I want to know why the HBase ma

Long GC pause question

Hi all, I encounter a problem about long gc pause cause the region server's local zookeeper client cannot send heartbeats, the session times out. But I want to know why the HBase master sends a MSG_REGIONSERVER_STOP op to region sever to stop its services rather than reinitialize a new zookeepe

Re: The hfile.block.cache.size = 0 performance is better than default(0.2) in random read? Is it possible?

Hi Ryan, *hfile.block.cache.size = 0, GC log:* 2010-10-21T15:53:27.486+0800: 1428.317: [GC [PSYoungGen: 18270K->320K(17728K)] 62008K->44066K(61696K), *0.0043520 secs*] [Times: user=0.00 sys=0.00, real=0.00 secs] 2010-10-21T15:53:27.933+0800: 1428.764: [GC [PSYoungGen: 17641K->256K(17024K)] 61386K-

Re: The hfile.block.cache.size = 0 performance is better than default(0.2) in random read? Is it possible?

Yes, only 14.7% :-( 2010-10-21 10:59:06,675 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Cache Stats: Sizes: Total=572.39557MB (600200272), Free=125.94194MB (132059696), Max=698.3375MB (732259968), Counts: Blocks=8992, Access=235641, Hit=34786, Miss=200855, Evictions=173, Evicted=191863,

The hfile.block.cache.size = 0 performance is better than default(0.2) in random read? Is it possible?

Hi all, I run my performance testing in random read, but I got the hfile.block.cache.size = 0 performance is better than default, Is it possible? My cluster (4 nodes): Hadoop 0.20.2, HBase 0.20.6 1 * namenode & hmaster & zookeeper 3 * datanode & regionserver P.S. Replication factor = 3, H

Re: How to add a new Keyspace?

Sorry, typo in mail adddress.

How to add a new Keyspace?

Hi all, If I want to add a new Keyspace, does it mean I have to distribute my storage-conf.xml to whole nodes? and restart whole nodes? Shen