Hello, I use hbase to store my data which comes from a crawler. These data are indexed from hbase to Solr. But I have a problem with hBase. As I have larger DB now, everytime I try to index data from hbase the error shown below occures. This is the part of log file hadoop.log
There is something like Caused by: This could be a sign that the server has too many connections (30 is the default). and I found here on SO that this could be beacues of maxClientConnections property so I set up this value to 0 but this solution did not help. /2013-11-11 15:30:22,638 ERROR zookeeper.ClientCnxn - Error while calling watcher java.lang.NullPointerException at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.resetZooKeeperTrackers(HConnectionManager.java:315) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.abort(HConnectionManager.java:1340) at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.connectionEvent(ZooKeeperWatcher.java:343) at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:261) at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:488) 2013-11-11 15:30:27,925 WARN mapred.FileOutputCommitter - Output path is null in cleanup 2013-11-11 15:30:27,925 WARN mapred.LocalJobRunner - job_local1497313370_0001 org.apache.gora.util.GoraException: java.lang.RuntimeException: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able to connect to ZooKeeper but the connection closes immediately. This could be a sign that the server has too many connections (30 is the default). Consider inspecting your ZK server logs for that error and then make sure you are reusing HBaseConfiguration as often as you can. See HTable's javadoc for more information. at org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:167) at org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:118) at org.apache.gora.mapreduce.GoraOutputFormat.getRecordWriter(GoraOutputFormat.java:88) at org.apache.hadoop.mapred.ReduceTask$NewTrackingRecordWriter.<init>(ReduceTask.java:568) at org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:637) at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:418) at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:398) Caused by: java.lang.RuntimeException: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able to connect to ZooKeeper but the connection closes immediately. This could be a sign that the server has too many connections (30 is the default). Consider inspecting your ZK server logs for that error and then make sure you are reusing HBaseConfiguration as often as you can. See HTable's javadoc for more information. at org.apache.gora.hbase.store.HBaseStore.initialize(HBaseStore.java:127) at org.apache.gora.store.DataStoreFactory.initializeDataStore(DataStoreFactory.java:102) at org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:161) ... 6 more Caused by: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able to connect to ZooKeeper but the connection closes immediately. This could be a sign that the server has too many connections (30 is the default). Consider inspecting your ZK server logs for that error and then make sure you are reusing HBaseConfiguration as often as you can. See HTable's javadoc for more information. at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:155) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getZooKeeperWatcher(HConnectionManager.java:1002) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.setupZookeeperTrackers(HConnectionManager.java:304) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.<init>(HConnectionManager.java:295) at org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:157) at org.apache.hadoop.hbase.client.HBaseAdmin.<init>(HBaseAdmin.java:90) at org.apache.gora.hbase.store.HBaseStore.initialize(HBaseStore.java:109) ... 8 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.exists(ZooKeeper.java:809) at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:837) at org.apache.hadoop.hbase.zookeeper.ZKUtil.createAndFailSilent(ZKUtil.java:903) at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:133) ... 14 more/ Do you know where is the problem please? -- View this message in context: http://apache-hbase.679495.n3.nabble.com/hBase-the-server-has-too-many-connections-maxClientConn-property-set-to-0-does-not-help-tp4052728.html Sent from the HBase User mailing list archive at Nabble.com.
