Hi All,
I've HDP 2.4 & i'm trying to put data into HBase table using Java API,
it gives error shown below,
Any ideas pls let me know.
Code used to add data to the HBase table (java file attached) ->
accessobjectjava.txt
public Put mkPut(User u){
Put p = new Put(Bytes.toBytes(u.user));
p.add(INFO_FAMILY, USER_COL, Bytes.toBytes(u.user));
p.add(INFO_FAMILY, NAME_COL, Bytes.toBytes(u.name));
p.add(INFO_FAMILY, EMAIL_COL, Bytes.toBytes(u.email));
return p;
}
public void addUser(String user, String name, String email) throws IOException{
HTableInterface users = connection.getTable(TABLE_NAME);
Put p = mkPut(new User(user,name,email));
users.put(p);
users.close();
}
---------------------------------ERROR ON CONSOLE--------------------------------------------------------
[root@sandbox ~]# java hbase/Exercise2/HBaseTester add kim123 kim kim@gmail.com
log4j:WARN No appenders could be found for logger (org.apache.hadoop.util.Shell).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Adding user...
in add user
in add user, users users;hconnection-0x43cdebe p {"totalColumns":3,"families":{"info":[{"timestamp":9223372036854775807,"tag":[],"qualifier":"user","vlen":6},{"timestamp":9223372036854775807,"tag":[],"qualifier":"name","vlen":3},{"timestamp":9223372036854775807,"tag":[],"qualifier":"email","vlen":13}]},"row":"kim123"}
java.lang.RuntimeException: java.lang.NullPointerException
at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:208)
at org.apache.hadoop.hbase.client.ClientSmallReversedScanner.loadCache(ClientSmallReversedScanner.java:211)
at org.apache.hadoop.hbase.client.ClientSmallReversedScanner.next(ClientSmallReversedScanner.java:185)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegionInMeta(ConnectionManager.java:1256)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1162)
at org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:370)
at org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:321)
at org.apache.hadoop.hbase.client.BufferedMutatorImpl.backgroundFlushCommits(BufferedMutatorImpl.java:206)
at org.apache.hadoop.hbase.client.BufferedMutatorImpl.flush(BufferedMutatorImpl.java:183)
at org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:1449)
at org.apache.hadoop.hbase.client.HTable.put(HTable.java:1040)
at hbase.Exercise2.AccessObject.addUser(AccessObject.java:93)
at hbase.Exercise2.HBaseTester.main(HBaseTester.java:27)
Caused by: java.lang.NullPointerException
at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.getMetaReplicaNodes(ZooKeeperWatcher.java:399)
at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:552)
at org.apache.hadoop.hbase.client.ZooKeeperRegistry.getMetaRegionLocation(ZooKeeperRegistry.java:61)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateMeta(ConnectionManager.java:1192)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1159)
at org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:300)
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:151)
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:59)
at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:200)
... 12 more
Exception in thread "main" java.lang.RuntimeException: java.lang.NullPointerException
at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:208)
at org.apache.hadoop.hbase.client.ClientSmallReversedScanner.loadCache(ClientSmallReversedScanner.java:211)
at org.apache.hadoop.hbase.client.ClientSmallReversedScanner.next(ClientSmallReversedScanner.java:185)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegionInMeta(ConnectionManager.java:1256)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1162)
at org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:370)
at org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:321)
at org.apache.hadoop.hbase.client.BufferedMutatorImpl.backgroundFlushCommits(BufferedMutatorImpl.java:206)
at org.apache.hadoop.hbase.client.BufferedMutatorImpl.flush(BufferedMutatorImpl.java:183)
at org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:1449)
at org.apache.hadoop.hbase.client.HTable.close(HTable.java:1485)
at hbase.Exercise2.AccessObject.addUser(AccessObject.java:98)
at hbase.Exercise2.HBaseTester.main(HBaseTester.java:27)
Caused by: java.lang.NullPointerException
at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.getMetaReplicaNodes(ZooKeeperWatcher.java:399)
at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:552)
at org.apache.hadoop.hbase.client.ZooKeeperRegistry.getMetaRegionLocation(ZooKeeperRegistry.java:61)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateMeta(ConnectionManager.java:1192)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1159)
at org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:300)
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:151)
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:59)
at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:200)
... 12 more
