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From "stack (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4470) ServerNotRunningException coming out of assignRootAndMeta kills the Master
Date Thu, 27 Oct 2011 00:07:32 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13136616#comment-13136616
] 

stack commented on HBASE-4470:
------------------------------

The fix in 0.92 was radical putting HTable in place everywhere we previously used bare HConnection
to get retries.  That ain't going to happen for 0.90.5.
                
> ServerNotRunningException coming out of assignRootAndMeta kills the Master
> --------------------------------------------------------------------------
>
>                 Key: HBASE-4470
>                 URL: https://issues.apache.org/jira/browse/HBASE-4470
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.90.4
>            Reporter: Jean-Daniel Cryans
>            Priority: Blocker
>             Fix For: 0.90.5
>
>
> I'm surprised we still have issues like that and I didn't get a hit while googling so
forgive me if there's already a jira about it.
> When the master starts it verifies the locations of root and meta before assigning them,
if the server is started but not running you'll get this:
> {quote}
> 2011-09-23 04:47:44,859 WARN org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation:
RemoteException connecting to RS
> org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.hbase.ipc.ServerNotRunningException:
Server is not running yet
>         at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1038)
>         at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:771)
>         at org.apache.hadoop.hbase.ipc.HBaseRPC$Invoker.invoke(HBaseRPC.java:257)
>         at $Proxy6.getProtocolVersion(Unknown Source)
>         at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:419)
>         at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:393)
>         at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:444)
>         at org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:349)
>         at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:969)
>         at org.apache.hadoop.hbase.catalog.CatalogTracker.getCachedConnection(CatalogTracker.java:388)
>         at org.apache.hadoop.hbase.catalog.CatalogTracker.getMetaServerConnection(CatalogTracker.java:287)
>         at org.apache.hadoop.hbase.catalog.CatalogTracker.verifyMetaRegionLocation(CatalogTracker.java:484)
>         at org.apache.hadoop.hbase.master.HMaster.assignRootAndMeta(HMaster.java:441)
>         at org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:388)
>         at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:282)
> {quote}
> I hit that 3-4 times this week while debugging something else. The worst is that when
you restart the master it sees that as a failover, but none of the regions are assigned so
it takes an eternity to get back fully online.

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