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
