For step #1, you used hbase-daemon.sh to start zookeeper.
Are you using hbase to manage zookeeper ensemble ?
The error you encountered was due to the following check in
TableNamespaceManager
:
if (!MetaReader.tableExists(masterServices.getCatalogTracker(),
TableName.NAMESPACE_TABLE_NAME)) {
LOG.info("Namespace table not found. Creating...");
createNamespaceTable(masterServices);
Looks like the cause was related to zookeeper.
Cheers
On Mon, Jun 30, 2014 at 9:56 AM, Mejo Tom <[email protected]> wrote:
>
> Hi,
> I have a 6 node grid that I have upgraded from hadoop 2.0 to hadoop 2.4. I
> am facing issues with hbase upgrade from 0.94.6-cdh4.3.0 to apache
> hbase-0.98.2-hadoop2. Appreciate any pointers on how to resolve this issue.
>
> Details:
>
> After upgrade of hadoop 2.0 to hadoop 2.4, performed the below steps to
> upgrade hbase from 0.94.6-cdh4.3.0 to apache hbase-0.98.2-hadoop2. Upgrade
> logs shows Namespace upgrade, Znode upgrade and Log splitting was
> successful. But HMaster gets aborted on startup.
>
> HMaster gets aborted with the following exception:
>
> 2014-06-30 09:02:53,516 FATAL [master:qa01:60000] master.HMaster: Master
> server abort: loaded coprocessors are: []
> 2014-06-30 09:02:53,517 FATAL [master:qa01:60000] master.HMaster:
> Unhandled exception. Starting shutdown.
> org.apache.hadoop.hbase.TableExistsException: hbase:namespace
> at
> org.apache.hadoop.hbase.master.handler.CreateTableHandler.prepare(CreateTableHandler.java:120)
> at
> org.apache.hadoop.hbase.master.TableNamespaceManager.createNamespaceTable(TableNamespaceManager.java:232)
> at
> org.apache.hadoop.hbase.master.TableNamespaceManager.start(TableNamespaceManager.java:86)
> at
> org.apache.hadoop.hbase.master.HMaster.initNamespace(HMaster.java:1062)
> at
> org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:926)
> at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:615)
> at java.lang.Thread.run(Thread.java:662)
> ...
> 2014-06-30 09:02:53,644 ERROR [main] master.HMasterCommandLine: Master
> exiting
> java.lang.RuntimeException: HMaster Aborted
> at
> org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:192)
> at
> org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:134)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> at
> org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126)
> at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:2801)
>
> Steps followed to upgrade hbase:
>
> 1. Start zookeeper
> On quorum node, execute below commands:
> cd $HBASE_HOME/bin/
> ./hbase-daemon.sh start zookeeper
>
> 2. Upgrade hbase
> On hbase master node, execute the upgrade command:
> cd $HBASE_HOME/bin/
> ./hbase upgrade -execute
>
> 3. Stop zookeeper
> On quorum node, execute below commands:
> cd $HBASE_HOME/bin/
> ./hbase-daemon.sh stop zookeeper
>
> 4. Start hbase
> On hbase master node, execute the below command:
> ./start-hbase.sh
>
> Regards,
> Mejo
>
