For isSuccessfulScan(), I see: scan.setBatch(1) scan.setCaching(1) scan.setFilter(FirstKeyOnlyFilter.new())
How about adding a KeyOnlyFilter as well ? On Tue, Jan 6, 2015 at 6:37 PM, Bi,hongyu—mike <[email protected]> wrote: > Thanks Ted， > Finally I resolved the issue, the RC is :region_mover will call > isSuccessfulScan to scan the startkey of the moved region which filled with > lots of expired cells，so it seems scan hang； > I think isSuccessfulScan is just to test whether the moved region is > readable or not, why not to use get instead which may avoid such case > > > > 2015-01-06 20:59 GMT+08:00 Ted Yu <[email protected]>: > > > Can you pastebin region server log ? > > > > When the scan is being performed, can you get jstack and pastebin it ? > > > > 0.94.15 was an old release, any chance of upgrade ? > > > > Thanks > > > > > > > > > On Jan 6, 2015, at 2:34 AM, Bi,hongyu—mike <[email protected]> wrote: > > > > > > sorry , forgot to attach the version： 0.94.15； > > > > > > and i call compact (as well as many times flush region) from hbase > shell > > > didn't take effect, no compaction happened; > > > > > > 2015-01-06 18:26 GMT+08:00 Bi,hongyu—mike <[email protected]>: > > > > > >> scan debug log： > > >> 15/01/06 18:20:56 DEBUG client.ClientScanner: Creating scanner over T > > >> starting at key 'Rowx' > > >> 15/01/06 18:20:56 DEBUG client.ClientScanner: Advancing internal > scanner > > >> to startKey at 'Rowx' > > >> 15/01/06 18:20:56 DEBUG client.MetaScanner: Scanning .META. starting > at > > >> row=XXXX for max=10 rows using > > >> > > > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@427b7b5d > > >> 15/01/06 18:20:56 DEBUG > > >> client.HConnectionManager$HConnectionImplementation: Cached location > for > > >> <THAT REGION> is RS_IP:60020 > > >> ...... > > >> 15/01/06 18:21:16 DEBUG zookeeper.ClientCnxn: Got ping response for > > >> sessionid: 0x3499df682b076cf after 0ms > > >> 15/01/06 18:21:36 DEBUG zookeeper.ClientCnxn: Got ping response for > > >> sessionid: 0x3499df682b076cf after 0ms > > >> 15/01/06 18:21:56 DEBUG zookeeper.ClientCnxn: Got ping response for > > >> sessionid: 0x3499df682b076cf after 0ms > > >> 15/01/06 18:21:56 DEBUG zookeeper.ClientCnxn: Reading reply > > >> sessionid:0x3499df682b076cf, packet:: clientPath:null serverPath:null > > >> finished:false header:: 9,4 replyHeader:: 9,21519728740,-101 > request:: > > >> '/hbase/table/T,F response:: > > >> 15/01/06 18:21:56 DEBUG > > >> client.HConnectionManager$HConnectionImplementation: Removed <THAT > > REGION> > > >> for tableName=T from cache because of Rowx > > >> 15/01/06 18:21:56 DEBUG > > >> client.HConnectionManager$HConnectionImplementation: Cached location > for > > >> <THAT REGION> is RS_IP:60020 > > >> 15/01/06 18:21:56 DEBUG client.ClientScanner: Advancing internal > scanner > > >> to startKey at 'Rowx' > > >> > > >> 2015-01-06 18:09 GMT+08:00 Bi,hongyu—mike <[email protected]>: > > >> > > >>> write traffic is ok: > > >>> 2015-01-06 17:46:01,127 WARN > org.apache.hadoop.hbase.ipc.SecureServer: > > >>> (responseTooSlow): {"processingtimems":68,"call":"multi(Region=Rx of > > 149 > > >>> actions and first row key= Rowx), rpc version=1, client version=29, > > >>> methodsFingerPrint=-1105746420","client":"IP：port} > > >>> > > >>> scan on that region slow： > > >>> 015-01-06 16:23:25,087 ERROR > > >>> org.apache.hadoop.hbase.regionserver.HRegionServer: > > >>> org.apache.hadoop.hbase.ipc.CallerDisconnectedException: Aborting on > > >>> region Rx, call next(8002464006782223710, 1, 0), rpc version=1, > client > > >>> version=29, methodsFingerPrint=-1771721648 from 10.201.202.31:31285 > > >>> after 87821 ms, since caller disconnected > > >>> at > > >>> > > > org.apache.hadoop.hbase.ipc.HBaseServer$Call.throwExceptionIfCallerDisconnected(HBaseServer.java:438); > > >>> > > >>> hbase hfile -r 'Rx' -p can produce the result > > >>> > > >>> 2015-01-06 18:03 GMT+08:00 Bi,hongyu—mike <[email protected]>: > > >>> > > >>>> Hi all, > > >>>> > > >>>> There's one region which can take write request but scan； > > >>>> If I scan on that region I'll get scanner lease timeout(60s by > > >>>> default)，while I can scan other region of the same table and get > the > > >>>> result less than 10ms（our slow rpc threadhold is 10ms）； > > >>>> > > >>>> hbck report OK, and I use "hbase hfile" tool to check that region's > > >>>> storefile and the region ,which all extract the result； > > >>>> > > >>>> so I don't have any idea on it... > > >>>> any help will be appreciate, many thanks! > > >> > > >
