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https://issues.apache.org/jira/browse/HBASE-5481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13217025#comment-13217025
]
Hadoop QA commented on HBASE-5481:
----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12516136/0001-Properly-handle-UnknownHostException-when-checking-M.patch
against trunk revision .
+1 @author. The patch does not contain any @author tags.
-1 tests included. The patch doesn't appear to include any new or modified
tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
-1 patch. The patch command could not apply the patch.
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/1051//console
This message is automatically generated.
> Uncaught UnknownHostException prevents HBase from starting
> ----------------------------------------------------------
>
> Key: HBASE-5481
> URL: https://issues.apache.org/jira/browse/HBASE-5481
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 0.92.0
> Reporter: Benoit Sigoure
> Assignee: Benoit Sigoure
> Attachments:
> 0001-Properly-handle-UnknownHostException-when-checking-M.patch
>
>
> If a host gets decommissioned and its hostname no longer resolves, and it was
> previously hosting ROOT or META, HBase won't be able to start up. This
> easily happens when moving across networks (e.g. developing HBase on a
> laptop), but can also happen during cluster-wide maintenances where HBase is
> shut down, then one or more nodes get decommissioned such that their
> hostnames no longer resolve.
> {code}
> 2012-02-26 20:05:48,339 DEBUG
> org.apache.hadoop.hbase.master.AssignmentManager: Assigning region
> -ROOT-,,0.70236052 to nowwhat.tsunanet.net,54092,1330315542087
> [...]
> 2012-02-26 20:05:48,456 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Onlined -ROOT-,,0.70236052; next sequenceid=268
> 2012-02-26 20:05:48,456 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
> regionserver:54092-0x135bcfbb0580001 Attempting to transition node
> 70236052/-ROOT- from RS_ZK_REGION_OPENING to RS_ZK_REGION_OPENING
> 2012-02-26 20:05:48,458 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
> regionserver:54092-0x135bcfbb0580001 Successfully transitioned node 70236052
> from RS_ZK_REGION_OPENING to RS_ZK_REGION_OPENING
> 2012-02-26 20:05:48,459 DEBUG
> org.apache.hadoop.hbase.master.AssignmentManager: Handling
> transition=RS_ZK_REGION_OPENING,
> server=nowwhat.tsunanet.net,54092,1330315542087, region=70236052/-ROOT-
> 2012-02-26 20:05:48,459 INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer: Post open deploy tasks
> for region=-ROOT-,,0.70236052, daughter=false
> 2012-02-26 20:05:48,460 INFO
> org.apache.hadoop.hbase.catalog.RootLocationEditor: Setting ROOT region
> location in ZooKeeper as nowwhat.tsunanet.net,54092,1330315542087
> 2012-02-26 20:05:48,466 INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer: Done with post open
> deploy task for region=-ROOT-,,0.70236052, daughter=false
> 2012-02-26 20:05:48,466 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
> regionserver:54092-0x135bcfbb0580001 Attempting to transition node
> 70236052/-ROOT- from RS_ZK_REGION_OPENING to RS_ZK_REGION_OPENED
> 2012-02-26 20:05:48,468 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
> regionserver:54092-0x135bcfbb0580001 Successfully transitioned node 70236052
> from RS_ZK_REGION_OPENING to RS_ZK_REGION_OPENED
> 2012-02-26 20:05:48,468 DEBUG
> org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler: region
> transitioned to opened in zookeeper: {NAME => '-ROOT-,,0', STARTKEY => '',
> ENDKEY => '', ENCODED => 70236052,}, server:
> nowwhat.tsunanet.net,54092,1330315542087
> 2012-02-26 20:05:48,468 DEBUG
> org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler: Opened
> -ROOT-,,0.70236052 on server:nowwhat.tsunanet.net,54092,1330315542087
> 2012-02-26 20:05:48,468 DEBUG
> org.apache.hadoop.hbase.master.AssignmentManager: Handling
> transition=RS_ZK_REGION_OPENED,
> server=nowwhat.tsunanet.net,54092,1330315542087, region=70236052/-ROOT-
> 2012-02-26 20:05:48,470 INFO
> org.apache.hadoop.hbase.master.handler.OpenedRegionHandler: Handling OPENED
> event for -ROOT-,,0.70236052 from nowwhat.tsunanet.net,54092,1330315542087;
> deleting unassigned node
> 2012-02-26 20:05:48,470 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
> master:54081-0x135bcfbb0580000 Deleting existing unassigned node for 70236052
> that is in expected state RS_ZK_REGION_OPENED
> 2012-02-26 20:05:48,472 DEBUG
> org.apache.hadoop.hbase.master.AssignmentManager: The znode of region
> -ROOT-,,0.70236052 has been deleted.
> 2012-02-26 20:05:48,472 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
> master:54081-0x135bcfbb0580000 Successfully deleted unassigned node for
> region 70236052 in expected state RS_ZK_REGION_OPENED
> 2012-02-26 20:05:48,472 INFO
> org.apache.hadoop.hbase.master.AssignmentManager: The master has opened the
> region -ROOT-,,0.70236052 that was online on
> nowwhat.tsunanet.net,54092,1330315542087
> 2012-02-26 20:05:48,473 INFO org.apache.hadoop.hbase.master.HMaster: -ROOT-
> assigned=1, rit=false, location=nowwhat.tsunanet.net,54092,1330315542087
> 2012-02-26 20:05:48,486 DEBUG
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation:
> Lookedup root region location,
> connection=org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@16d0a6a3;
> serverName=nowwhat.tsunanet.net,54092,1330315542087
> 2012-02-26 20:05:48,488 DEBUG
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation:
> Lookedup root region location,
> connection=org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@16d0a6a3;
> serverName=nowwhat.tsunanet.net,54092,1330315542087
> 2012-02-26 20:05:48,620 FATAL org.apache.hadoop.hbase.master.HMaster: Master
> server abort: loaded coprocessors are: []
> 2012-02-26 20:05:48,621 FATAL org.apache.hadoop.hbase.master.HMaster:
> Unhandled exception. Starting shutdown.
> java.net.UnknownHostException: unknown host: h-27-1.sfo.stumble.net
> at
> org.apache.hadoop.hbase.ipc.HBaseClient$Connection.<init>(HBaseClient.java:227)
> at
> org.apache.hadoop.hbase.ipc.HBaseClient.getConnection(HBaseClient.java:1016)
> at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:878)
> at
> org.apache.hadoop.hbase.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:150)
> at $Proxy12.getProtocolVersion(Unknown Source)
> at
> org.apache.hadoop.hbase.ipc.WritableRpcEngine.getProxy(WritableRpcEngine.java:183)
> at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:303)
> at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:280)
> at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:332)
> at
> org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:236)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1278)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1235)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1222)
> at
> org.apache.hadoop.hbase.catalog.CatalogTracker.getCachedConnection(CatalogTracker.java:564)
> at
> org.apache.hadoop.hbase.catalog.CatalogTracker.getMetaServerConnection(CatalogTracker.java:422)
> at
> org.apache.hadoop.hbase.catalog.CatalogTracker.waitForMeta(CatalogTracker.java:478)
> at
> org.apache.hadoop.hbase.catalog.CatalogTracker.waitForMetaServerConnection(CatalogTracker.java:503)
> at
> org.apache.hadoop.hbase.catalog.CatalogTracker.verifyMetaRegionLocation(CatalogTracker.java:674)
> at
> org.apache.hadoop.hbase.master.HMaster.assignRootAndMeta(HMaster.java:575)
> at
> org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:491)
> at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:326)
> at
> org.apache.hadoop.hbase.master.HMasterCommandLine$LocalHMaster.run(HMasterCommandLine.java:218)
> at java.lang.Thread.run(Thread.java:680)
> 2012-02-26 20:05:48,626 INFO org.apache.hadoop.hbase.master.HMaster: Aborting
> {code}
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