Hi Matthew, Thanks for getting back to me.
Yes, I do have 3 zookeepers in the cluster – I’ll add all three. Yes, it is on Amazon, thanks for the tip. I’ll try build it and try run it on the cluster. I’ll post back shortly. Cheers John From: Matthew Johnson [mailto:[email protected]] Sent: Monday, February 23, 2015 5:31 PM To: [email protected] Subject: RE: JDBC connection zookeeper error Hi John, I cross-posted this on StackOverflow: Have you tried entering the full zookeeper quorum in your URL? Something like this (you say you have 3 zookeepers in your cluster, obviously replace IPs below to match your zk quorum): jdbc:phoenix:54.152.31.122,54.152.31.123,54.152.31.124 I had a problem on Amazon (is that where your cluster is?) where internal and external IPs were getting confused and zookeeper couldn't connect to HBase properly. I solved this (not the most scalable solution but it works!) by creating aliases in /etc/hosts on the machines in the cluster pointing at internal IP addresses, then on my local desktop using the same aliases but pointing to the external IPs. Then, altered my cluster setup to use aliases everywhere instead of IP addresses. Quick way to test if this is your problem - build your app, copy it onto one of the servers in your cluster, and see if it will run ok on there. Hope that helps! Cheers, Matt From: Nick Dimiduk [mailto:[email protected]<mailto:[email protected]>] Sent: 23 February 2015 17:25 To: [email protected]<mailto:[email protected]> Subject: Re: JDBC connection zookeeper error Can you double-check the Zookeeper quorum, port, and root node? The HBase Master web UI shows the first two, the third you can get to by looking at the output of zk_dump.jsp On Mon, Feb 23, 2015 at 8:58 AM, Brady, John <[email protected]<mailto:[email protected]>> wrote: Hi Matthew, Yes, I just doubled checked. The HBase master is running and I can access the HMaster status page – I can see the tables I created in Phoenix. Would you have any other ideas? Thanks From: Matthew Johnson [mailto:[email protected]<mailto:[email protected]>] Sent: Monday, February 23, 2015 3:13 PM To: [email protected]<mailto:[email protected]> Subject: RE: JDBC connection zookeeper error Hi John, Is your HBase Master running? (It shows up in linux process list as HMaster). Are you able to access the HMaster status page? (On mine, it is http://<ip<http://%3cip> address>:60010). Cheers, Matt From: Brady, John [mailto:[email protected]<mailto:[email protected]>] Sent: 23 February 2015 14:59 To: [email protected]<mailto:[email protected]> Subject: JDBC connection zookeeper error Hello, I have Phoenix installed on a 5 node Cloudera cluster with 3 zookeeper nodes. I’m trying to run a basic SQL command from the JDBC program below but I’m getting zookeeper errors. Could anybody advise? org.apache.phoenix.exception.PhoenixIOException: org.apache.hadoop.hbase.MasterNotRunningException: Can't get connection to ZooKeeper: KeeperErrorCode = ConnectionLoss for /hbase at org.apache.phoenix.util.ServerUtil.parseServerException(ServerUtil.java:108) at org.apache.phoenix.query.ConnectionQueryServicesImpl.ensureTableCreated(ConnectionQueryServicesImpl.java:832) at org.apache.phoenix.query.ConnectionQueryServicesImpl.createTable(ConnectionQueryServicesImpl.java:1126) at org.apache.phoenix.query.DelegateConnectionQueryServices.createTable(DelegateConnectionQueryServices.java:110) at org.apache.phoenix.schema.MetaDataClient.createTableInternal(MetaDataClient.java:1590) at org.apache.phoenix.schema.MetaDataClient.createTable(MetaDataClient.java:568) at org.apache.phoenix.compile.CreateTableCompiler$2.execute(CreateTableCompiler.java:175) at org.apache.phoenix.jdbc.PhoenixStatement$2.call(PhoenixStatement.java:271) at org.apache.phoenix.jdbc.PhoenixStatement$2.call(PhoenixStatement.java:263) at org.apache.phoenix.call.CallRunner.run(CallRunner.java:53) at org.apache.phoenix.jdbc.PhoenixStatement.executeMutation(PhoenixStatement.java:261) at org.apache.phoenix.jdbc.PhoenixStatement.executeUpdate(PhoenixStatement.java:1043) at org.apache.phoenix.query.ConnectionQueryServicesImpl$9.call(ConnectionQueryServicesImpl.java:1551) at org.apache.phoenix.query.ConnectionQueryServicesImpl$9.call(ConnectionQueryServicesImpl.java:1520) at org.apache.phoenix.util.PhoenixContextExecutor.call(PhoenixContextExecutor.java:77) at org.apache.phoenix.query.ConnectionQueryServicesImpl.init(ConnectionQueryServicesImpl.java:1520) at org.apache.phoenix.jdbc.PhoenixDriver.getConnectionQueryServices(PhoenixDriver.java:162) at org.apache.phoenix.jdbc.PhoenixEmbeddedDriver.connect(PhoenixEmbeddedDriver.java:126) at org.apache.phoenix.jdbc.PhoenixDriver.connect(PhoenixDriver.java:133) at java.sql.DriverManager.getConnection(Unknown Source) at java.sql.DriverManager.getConnection(Unknown Source) at mysqljbdctest.PhoenixJDBC.main(PhoenixJDBC.java:15) Caused by: org.apache.hadoop.hbase.MasterNotRunningException: org.apache.hadoop.hbase.MasterNotRunningException: Can't get connection to ZooKeeper: KeeperErrorCode = ConnectionLoss for /hbase at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$StubMaker.makeStub(HConnectionManager.java:1651) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$MasterServiceStubMaker.makeStub(HConnectionManager.java:1677) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getKeepAliveMasterService(HConnectionManager.java:1884) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHTableDescriptor(HConnectionManager.java:2671) at org.apache.hadoop.hbase.client.HBaseAdmin.getTableDescriptor(HBaseAdmin.java:397) at org.apache.hadoop.hbase.client.HBaseAdmin.getTableDescriptor(HBaseAdmin.java:402) at org.apache.phoenix.query.ConnectionQueryServicesImpl.ensureTableCreated(ConnectionQueryServicesImpl.java:764) ... 20 more package mysqljbdctest; import java.sql.*; public class PhoenixJDBC { public static void main(String args[]) { try { //Register JDBC Driver Class.forName("org.apache.phoenix.jdbc.PhoenixDriver").newInstance(); Connection conn = DriverManager.getConnection("jdbc:phoenix:54.152.31.122","",""); //Create a Statement class to execute the SQL statement Statement stmt = conn.createStatement(); //Execute the SQL statement and get the results in a Resultset ResultSet rs = stmt.executeQuery("select * from US_POPULATION"); // Iterate through the ResultSet, displaying two values // for each row using the getString method while (rs.next()) System.out.println("Name= " + rs.getString("host")); } catch (SQLException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } } ------------------------------------------------------------- Intel Ireland Limited (Branch) Collinstown Industrial Park, Leixlip, County Kildare, Ireland Registered Number: E902934 This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). 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