Have you tried loading like :-
*my_data = LOAD 'hbase://test' using
org.apache.pig.backend.hadoop.hbase.HBaseStorage('cf:a', '-caching 100') as
*(a:bytearray)*;dump my_data;*
or
*my_data = LOAD 'hbase://test' using
org.apache.pig.backend.hadoop.hbase.HBaseStorage('cf:a', '-caching 100') as
(a);dump my_data;*
I am just trying to see if it works if you supply a different datatype ,
bytearray instead of chararray, or without any datatype at all.
On Sun, Apr 24, 2011 at 10:40 AM, byambajargal <[email protected]>wrote:
> Hello guys
>
> I am running cloudere distribution cdh3u0 on my cluster and i am trying to
> connect pig with Hbase. I have 11 nodes on my cluster so i have configured
> one machine as HBaseMaster and rest are Hbase Region Servers.
> On my Master manshine:
>
> 1. Output of the command $*sudo jps is :*
>
> 6907 HMaster
> 14108 Jps
> 31470 QuorumPeerMain
> 22240 JobTracker
> 21602 SecondaryNameNode
> 21155 NameNode
>
> 2. Output of the command*$status 'detailed'*
>
> -bash-3.2$ hbase shell
> HBase Shell; enter 'help<RETURN>' for list of supported commands.
> Type "exit<RETURN>" to leave the HBase Shell
> Version 0.90.1-cdh3u0, r, Fri Mar 25 16:10:51 PDT 2011
>
> hbase(main):001:0> *status 'detailed'*
> version 0.90.1-cdh3u0
> 0 regionsInTransition
> 10 live servers
> haisen2.ux.uis.no:60020 1303287066114
> requests=0, regions=1, usedHeap=34, maxHeap=987
> -ROOT-,,0
> stores=1, storefiles=1, storefileSizeMB=0, memstoreSizeMB=0,
> storefi
> leIndexSizeMB=0
> haisen10.ux.uis.no:60020 1303287733515
> requests=0, regions=1, usedHeap=35, maxHeap=987
> task1,,1303326469811.418e9f137f5b1d33604419ef6a8acb6e.
> stores=1, storefiles=0, storefileSizeMB=0, memstoreSizeMB=0,
> storefi
> leIndexSizeMB=0
> haisen4.ux.uis.no:60020 1303287334273
> requests=0, regions=0, usedHeap=33, maxHeap=987
> haisen1.ux.uis.no:60020 1303643944066
> requests=0, regions=0, usedHeap=35, maxHeap=987
> haisen7.ux.uis.no:60020 1303287560071
> requests=0, regions=1, usedHeap=32, maxHeap=987
> test,,1303644907708.63ec7397e09d3335c8471aa90bcc5549.
> stores=1, storefiles=0, storefileSizeMB=0, memstoreSizeMB=0,
> storefi
> leIndexSizeMB=0
> haisen9.ux.uis.no:60020 1303287672340
> requests=0, regions=1, usedHeap=24, maxHeap=987
> .META.,,1
> stores=1, storefiles=1, storefileSizeMB=0, memstoreSizeMB=0,
> storefi
> leIndexSizeMB=0
> haisen5.ux.uis.no:60020 1303287407405
> requests=0, regions=0, usedHeap=28, maxHeap=987
> haisen6.ux.uis.no:60020 1303287480842
> requests=0, regions=0, usedHeap=23, maxHeap=987
> haisen3.ux.uis.no:60020 1303287189985
> requests=0, regions=0, usedHeap=27, maxHeap=987
> haisen8.ux.uis.no:60020 1303287626373
> requests=0, regions=0, usedHeap=30, maxHeap=987
> 0 dead servers
>
>
> I can put data into HBase and pull it out just fine by hbase shell command
> and i have a problem when i load data from hbase by using the following Pig
> query:
>
> *my_data = LOAD 'hbase://test' using
> org.apache.pig.backend.hadoop.hbase.HBaseStorage('cf:a', '-caching 100') as
> (a:chararray);dump my_data;*
>
> i got a error message and my job was failure. If someone could help me to
> connect hbase with pig that would be great.
>
>
> the problem I am having now is the following exception on the pig log file:
>
> Backend error message
> ---------------------
> org.apache.hadoop.hbase.ZooKeeperConnectionException:
> org.apache.hadoop.hbase.ZooKeeperConnectionException:
> org.apache.zookeeper.KeeperException$ConnectionLossException:
> KeeperErrorCode = ConnectionLoss for /hbase
> at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getZooKeeperWatcher(HConnectionManager.java:991)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.setupZookeeperTrackers(HConnectionManager.java:302)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.<init>(HConnectionManager.java:293)
> at
> org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:156)
> at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:167)
> at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:145)
> at
> org.apache.pig.backend.hadoop.hbase.HBaseStorage.setLocation(HBaseStorage.java:302)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.mergeSplitSpecificConf(PigInputFormat.java:133)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.createRecordReader(PigInputFormat.java:111)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:613)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:322)
> at org.apache.hadoop.mapred.Child$4.run(Child.java:268)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1115)
> at org.apache.hadoop.mapred.Child.main(Child.java:262)
> Caused by: org.apache.hadoop.hbase.ZooKeeperConnectionException:
> org.apache.zookeeper.KeeperException$ConnectionLossException:
> KeeperErrorCode = ConnectionLoss for /hbase
> at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:147)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getZooKeeperWatcher(HConnectionManager.java:989)
> ... 15 more
> Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException:
> KeeperErrorCode = ConnectionLoss for /hbase
> at
> org.apache.zookeeper.KeeperException.create(KeeperException.java:90)
> at
> org.apache.zookeeper.KeeperException.create(KeeperException.java:42)
> at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:637)
> at
> org.apache.hadoop.hbase.zookeeper.ZKUtil.createAndFailSilent(ZKUtil.java:902)
> at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:133)
> ... 16 more
>
> Pig Stack Trace
> ---------------
> ERROR 2997: Unable to recreate exception from backed error:
> org.apache.hadoop.hbase.ZooKeeperConnectionException:
> org.apache.hadoop.hbase.ZooKeeperConnectionException:
> org.apache.zookeeper.KeeperException$ConnectionLossException:
> KeeperErrorCode = ConnectionLoss for /hbase
>
> org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to
> open iterator for alias my_data. Backend error : Unable to recreate
> exception from backed error:
> org.apache.hadoop.hbase.ZooKeeperConnectionException:
> org.apache.hadoop.hbase.ZooKeeperConnectionException:
> org.apache.zookeeper.KeeperException$ConnectionLossException:
> KeeperErrorCode = ConnectionLoss for /hbase
> at org.apache.pig.PigServer.openIterator(PigServer.java:742)
> at
> org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:612)
> at
> org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:303)
> at
> org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:165)
>
>
>
>
> Thanks for helping
>
>
> Byambajargal
>
>
--
--
Thanks and Regards,
Sulabh Choudhury
