Dear Wiki user, You have subscribed to a wiki page or wiki category on "Hadoop Wiki" for change notification.
The "Hbase/Troubleshooting" page has been changed by AndrewPurtell. http://wiki.apache.org/hadoop/Hbase/Troubleshooting?action=diff&rev1=29&rev2=30 -------------------------------------------------- 1. [[#11|Problem: Client says no such table but it exists]] 1. [[#12|Problem: Could not find my address: xyz in list of ZooKeeper quorum servers]] 1. [[#13|Problem: Long client pauses under high load; or deadlock if using THBase]] + 1. [[#14|Problem: Zookeeper does not seem to work on Amazon EC2]] <<Anchor(1)>> == 1. Problem: Master initializes, but Region Servers do not == @@ -204, +205 @@ == Resolution == * Increase the value of "hbase.regionserver.handler.count" in hbase-site.xml. The default is 10. Try 100. + <<Anchor(13)>> + == 13. Problem: Zookeeper does not seem to work on Amazon EC2 == + * HBase does not start when deployed as Amazon EC2 instances. + * Exceptions like the below appear in the master and/or region server logs: + {{{ + 2009-10-19 11:52:27,030 INFO org.apache.zookeeper.ClientCnxn: Attempting + connection to server ec2-174-129-15-236.compute-1.amazonaws.com/10.244.9.171:2181 + 2009-10-19 11:52:27,032 WARN org.apache.zookeeper.ClientCnxn: Exception + closing session 0x0 to sun.nio.ch.selectionkeyi...@656dc861 + java.net.ConnectException: Connection refused + }}} + == Causes == + * Security group policy is blocking the Zookeeper port on a public address. + == Resolution == + * Use the internal EC2 host names when configuring the Zookeeper quorum peer list. +
