hi, thanks. first u mean to use compression second u mean to use more regionserver ,right? third u introduce a way to improve hbase performance.
To use one region server is base on i only have one serverhost in internet, and i want to support hbase server for my web like a scalable database. Does it mean hbase used limited just by one server , so if i use compression, it maybe also happen to fail for inputing a large data ,right? in this case , how large data does one region server work about 2g ram . and the logs is too large ,i just pick up the same part to sent , i am sorry, but i guess it must be some thing to limit the data to input ,because i inputed 1G data to it , it works ok, when it was up to 27G ,i normally stop about 20% ,about 5-6G data, it died. 2009/11/12 Jean-Daniel Cryans <[email protected]> > If you setAutoFlush(true) then you don't have to flushCommits() ;) > > Also HBase isn't meant for the heavy upload of one just 1 node, and > when importing data you have to be more careful since it's not a > "normal" usage pattern. > > Make sure of to follow the instructions in this link if you want to > have more chance of succeeding: > http://wiki.apache.org/hadoop/PerformanceTuning > Makre you use LZO, that you give at least 3GB of RAM and that the > machine doesn't swap. Check conf/hbase-env.sh to change the default > 1000MB heap. > > WRT the exact reason your region server died, you pasted way too > little information from its log. > > J-D > > On Wed, Nov 11, 2009 at 1:45 AM, 梁景明 <[email protected]> wrote: > > Hi , i have a large data sized 27G to insert into hbase whith one > > regionserver. > > and i used mapreduce to insert the data. > > Whatever how much maps i used, how maps' thread to sleep to control the > > speed, > > it just worked before 20% data inserted ,then failed , and hbase can't > > start again. > > it's weird. > > > > is there some pool to store the data for insert,if there is too much than > > its size ,will caused error. > > so , will .flushCommits() clear that pool? thanks for any help. > > > > *here is my code to insert in a map process*. > > > > ============================ > > table = new HTable(conf, tablename.getBytes()); > > table.setAutoFlush(true); > > Put p = new Put(Bytes.toBytes(obj.getKey())); > > HashMap cols = obj.getColumns(); > > ....... > > table.put(p); > > table.flushCommits(); > > ================================ > > > > *here is my logs* > > > > Hadoop insert log > > ====================================================== > > org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to > contact > > region server 192.168.1.116:60020 for region > > chapter,b74054c6fba7f1f072c6a3a4fc3d329a,1257926538767, row > > 'b7e49883d0380b4194025170f8f9cb7f', but failed after 10 attempts. > > Exceptions: > > java.net.ConnectException: Connection refused at > > > org.apache.hadoop.hbase.client.HConnectionManager$TableServers.getRegionServerWithRetries(HConnectionManager.java:1001) > > at > > > org.apache.hadoop.hbase.client.HConnectionManager$TableServers$2.doCall(HConnectionManager.java:1192) > > > > at > org.apache.hadoop.hbase.client.HConnectionManager$TableServers$Batch.process(HConnectionManager.java:1114) > > at > org.apache.hadoop.hbase.client.HConnectionManager$TableServers.processBatchOfRows(HConnectionManager.java:1200) > > at > org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:605) > > at org.apache.hadoop.hbase.client.HTable.put(HTable.java:470) > > at com.soko.hbase.tool.HbaseUtil.insertData(HbaseUtil.java:118) > > at com.soko.mr.HbaseFictionMR$Map.map(HbaseFictionMR.java:50) > > at com.soko.mr.HbaseFictionMR$Map.map(HbaseFictionMR.java:1) > > at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50) > > at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:358) > > at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307) > > at org.apache.hadoop.mapred.Child.main(Child.java:170) > > > ========================================================================================= > > > > hbase-futureha-regionserver-ubuntu5.log > > ================================================================= > > 2009-11-11 16:44:06,998 INFO > org.apache.hadoop.hbase.regionserver.HRegion: > > Closed chapter,90c0011cb6287924c818d371a27e145f,1257924043800 > > 2009-11-11 16:44:06,998 INFO > > org.apache.hadoop.hbase.regionserver.HRegionServer: aborting server at: > > 192.168.1.116:60020 > > 2009-11-11 16:44:09,091 INFO org.apache.hadoop.hbase.Leases: > > regionserver/192.168.1.116:60020.leaseChecker closing leases > > 2009-11-11 16:44:09,091 INFO org.apache.hadoop.hbase.Leases: > > regionserver/192.168.1.116:60020.leaseChecker closed leases > > 2009-11-11 16:44:10,931 INFO > > org.apache.hadoop.hbase.regionserver.HRegionServer: worker thread exiting > > 2009-11-11 16:44:10,932 INFO org.apache.zookeeper.ZooKeeper: Closing > > session: 0x124e11cbae00001 > > 2009-11-11 16:44:10,932 INFO org.apache.zookeeper.ClientCnxn: Closing > > ClientCnxn for session: 0x124e11cbae00001 > > 2009-11-11 16:44:10,968 INFO org.apache.zookeeper.ClientCnxn: Exception > > while closing send thread for session 0x124e11cbae00001 : Read error rc = > -1 > > java.nio.DirectByteBuffer[pos=0 lim=4 cap=4] > > ================================================================ > > > > Master > > ---------------------------------------- > > 2009-11-11 16:59:38,792 INFO org.apache.hadoop.ipc.HBaseServer: IPC > Server > > handler 2 on 60000: exiting > > 2009-11-11 16:59:38,791 INFO org.apache.zookeeper.ZooKeeper: Closing > > session: 0x124e11cbae00000 > > 2009-11-11 16:59:38,793 INFO org.apache.zookeeper.ClientCnxn: Closing > > ClientCnxn for session: 0x124e11cbae00000 > > 2009-11-11 16:59:38,795 INFO org.apache.zookeeper.ClientCnxn: Exception > > while closing send thread for session 0x124e11cbae00000 : Read error rc = > -1 > > java.nio.DirectByteBuffer[pos=0 lim=4 cap=4] > > ----------------------------------------- > > > > ZooKeeper > > ============================= > > 2009-11-11 16:59:38,219 INFO org.apache.zookeeper.server.NIOServerCnxn: > > Creating new session 0x124e11cbae0007e > > 2009-11-11 16:59:38,229 INFO org.apache.zookeeper.server.NIOServerCnxn: > > Finished init of 0x124e11cbae0007e valid:true > > 2009-11-11 16:59:38,494 WARN > > org.apache.zookeeper.server.PrepRequestProcessor: Got exception when > > processing sessionid:0x124e11cbae00000 type:create cxid:0x10 > > zxid:0xfffffffffffffffe txntype:unknown n/a > > org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode > = > > NodeExists > > at > > > org.apache.zookeeper.server.PrepRequestProcessor.pRequest(PrepRequestProcessor.java:245) > > at > > > org.apache.zookeeper.server.PrepRequestProcessor.run(PrepRequestProcessor.java:114) > > 2009-11-11 16:59:38,793 INFO > > org.apache.zookeeper.server.PrepRequestProcessor: Processed session > > termination request for id: 0x124e11cbae00000 > > ============================ > > >
