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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-3918) When assigning regions to an address, check the regionserver is actually online first
Date Tue, 24 May 2011 16:54:47 GMT
When assigning regions to an address, check the regionserver is actually online first
-------------------------------------------------------------------------------------

                 Key: HBASE-3918
                 URL: https://issues.apache.org/jira/browse/HBASE-3918
             Project: HBase
          Issue Type: Bug
            Reporter: stack


This one came up in the case where the data was copied from one cluster to another.  The first
cluster was running 0.89.x.  The second 0.90.x.  On startup of 0.90.x, it wanted to verify
.META. was in the location -ROOT- said it was at, so it tried connect to the FIRST cluster.
 The attempt failed because of mismatched RPCs.  The master then actually aborted.

{code}
org.apache.hadoop.hbase.ipc.HBaseRPC$VersionMismatch: Protocol org.apache.hadoop.hbase.ipc.HRegionInterface
version mismatch. (client = 27, server = 24)
at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:424)
at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:393)
at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:444)
at org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:349)
at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:965)
at org.apache.hadoop.hbase.catalog.CatalogTracker.getCachedConnection(CatalogTracker.java:386)
at org.apache.hadoop.hbase.catalog.CatalogTracker.getMetaServerConnection(CatalogTracker.java:285)
at org.apache.hadoop.hbase.catalog.CatalogTracker.verifyMetaRegionLocation(CatalogTracker.java:486)
at org.apache.hadoop.hbase.master.HMaster.assignRootAndMeta(HMaster.java:442)
at org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:389)
at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:283)
2011-05-23 22:38:07,720 INFO org.apache.hadoop.hbase.master.HMaster: Aborting
{code}

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