Hi, Esteban Each region server has about 122 regions, data is large. HDFS replica is defined as default 3, and namenode have some WARN like below.
{log} 2015-05-14 20:45:37,463 WARN org.apache.hadoop.hdfs.qjournal.client.QuorumJournalManager: Took 1503ms to send a batch of 3 edits (179 bytes) to remote journal 192.168.44.29:8485 {/log} Regionserver's log seems normal: {log} 2015-05-14 20:46:59,890 INFO [Thread-15] regionserver.HRegion: Finished memstore flush of ~44.4 M/46586984, currentsize=0/0 for region qmq_backup,0066485937885860620cb396a3e65c6c9de92cae9aa29,1412429632233.65684ef65f58cb3e27986ca38d397bee. in 3141ms, sequenceid=7493455453, compaction requested=true 2015-05-14 20:46:59,890 INFO [regionserver60020-smallCompactions-1431462564717] regionserver.HRegion: Starting compaction on m in region qmq_backup,0066485937885860620cb396a3e65c6c9de92cae9aa29,1412429632233.65684ef65f58cb3e27986ca38d397bee. {/log} Any idea? 2015-05-13 1:26 GMT+08:00 Esteban Gutierrez <este...@cloudera.com>: > Hi, > > How many regions you per RS? one possibility is that you have very little > data in your cluster and regions have moved around and there are no blocks > in the local DN to the RS. Another possibility is that you have one replica > configured and regions moved too so that makes even harder to have some > local blocks in the DN to the RS. Lastly it could be some other problem > where the HDFS pipeline has excluded the local DN. Have you seen any > exception in the RSs or the NameNode that might be interesting? > > thanks, > esteban. > > > > -- > Cloudera, Inc. > > > On Tue, May 12, 2015 at 2:59 AM, 娄帅 <louis.hust...@gmail.com> wrote: > > > Hi, all, > > > > I am maintaining an hbase 0.96.0 cluster, but from the web ui of HBase > > regionserver, > > i saw Block locality is 0 for all regionserver. > > > > Datanode on l-hbase[26-31].data.cn8 and regionserver on > > l-hbase[25-31].data.cn8, > > > > Any idea? > > >