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Posted to issues@hbase.apache.org by "Matt Corgan (JIRA)" <ji...@apache.org> on 2011/01/06 23:46:45 UTC
[jira] Created: (HBASE-3425) HMaster sends duplicate ports to
regionserver in HServerAddress
HMaster sends duplicate ports to regionserver in HServerAddress
---------------------------------------------------------------
Key: HBASE-3425
URL: https://issues.apache.org/jira/browse/HBASE-3425
Project: HBase
Issue Type: Bug
Components: master
Affects Versions: 0.90.0
Reporter: Matt Corgan
Fix For: 0.90.0
On regionserver startup, the regionserver receives an HServerAddress from the master as a Writable. It's a string hostname and an integer port. Our master is also appending the port to the string, so when they are concatenated it becomes hadoopnode98:60020:60020 and the HServerAddress cannot be instantiated.
This should probably be fixed in the master as well, but I don't know where it happens. The attached patch handles it in the regionserver.
Regionserver startup log:
2011-01-06 15:55:48,813 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Connected to master at hadoopmaster.hotpads.srv:60000
2011-01-06 15:55:48,857 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Telling master at hadoopmaster.hotpads.srv:60000 that we are up
2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.regionserver.address=HadoopNode98.hotpads.srv:60020
2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: fs.default.name=hdfs://hadoopmaster.hotpads.srv:54310/hbase
2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.rootdir=hdfs://hadoopmaster.hotpads.srv:54310/hbase
2011-01-06 15:55:48,945 ERROR org.apache.hadoop.hbase.HServerAddress: Could not resolve the DNS name of HadoopNode98.hotpads.srv:60020:60020
2011-01-06 15:55:48,945 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: STOPPED: Failed initialization
2011-01-06 15:55:48,947 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: Failed init
java.lang.IllegalArgumentException: Could not resolve the DNS name of HadoopNode98.hotpads.srv:60020:60020
at org.apache.hadoop.hbase.HServerAddress.checkBindAddressCanBeResolved(HServerAddress.java:105)
at org.apache.hadoop.hbase.HServerAddress.<init>(HServerAddress.java:76)
at org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:798)
at org.apache.hadoop.hbase.regionserver.HRegionServer.tryReportForDuty(HRegionServer.java:1394)
at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:522)
at java.lang.Thread.run(Thread.java:619)
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[jira] Updated: (HBASE-3425) HMaster sends duplicate ports to
regionserver in HServerAddress
Posted by "stack (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-3425?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack updated HBASE-3425:
-------------------------
Fix Version/s: (was: 0.90.0)
0.90.1
Moving out of 0.90.0 for now.
> HMaster sends duplicate ports to regionserver in HServerAddress
> ---------------------------------------------------------------
>
> Key: HBASE-3425
> URL: https://issues.apache.org/jira/browse/HBASE-3425
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.90.0
> Reporter: Matt Corgan
> Fix For: 0.90.1
>
> Attachments: HBASE-3425[0.90.0].patch
>
>
> On regionserver startup, the regionserver receives an HServerAddress from the master as a Writable. It's a string hostname and an integer port. Our master is also appending the port to the string, so when they are concatenated it becomes hadoopnode98:60020:60020 and the HServerAddress cannot be instantiated.
> This should probably be fixed in the master as well, but I don't know where it happens. The attached patch handles it in the regionserver.
> Regionserver startup log:
> 2011-01-06 15:55:48,813 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Connected to master at hadoopmaster.hotpads.srv:60000
> 2011-01-06 15:55:48,857 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Telling master at hadoopmaster.hotpads.srv:60000 that we are up
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.regionserver.address=HadoopNode98.hotpads.srv:60020
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: fs.default.name=hdfs://hadoopmaster.hotpads.srv:54310/hbase
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.rootdir=hdfs://hadoopmaster.hotpads.srv:54310/hbase
> 2011-01-06 15:55:48,945 ERROR org.apache.hadoop.hbase.HServerAddress: Could not resolve the DNS name of HadoopNode98.hotpads.srv:60020:60020
> 2011-01-06 15:55:48,945 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: STOPPED: Failed initialization
> 2011-01-06 15:55:48,947 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: Failed init
> java.lang.IllegalArgumentException: Could not resolve the DNS name of HadoopNode98.hotpads.srv:60020:60020
> at org.apache.hadoop.hbase.HServerAddress.checkBindAddressCanBeResolved(HServerAddress.java:105)
> at org.apache.hadoop.hbase.HServerAddress.<init>(HServerAddress.java:76)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:798)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.tryReportForDuty(HRegionServer.java:1394)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:522)
> at java.lang.Thread.run(Thread.java:619)
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[jira] [Resolved] (HBASE-3425) HMaster sends duplicate ports to
regionserver in HServerAddress
Posted by "stack (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-3425?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack resolved HBASE-3425.
--------------------------
Resolution: Won't Fix
HServerAddress has been deprecated in TRUNK. We shouldn't have this prob. going forward. Closing as 'wont fix'
> HMaster sends duplicate ports to regionserver in HServerAddress
> ---------------------------------------------------------------
>
> Key: HBASE-3425
> URL: https://issues.apache.org/jira/browse/HBASE-3425
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.90.0
> Reporter: Matt Corgan
> Fix For: 0.92.0
>
> Attachments: HBASE-3425[0.90.0].patch
>
>
> On regionserver startup, the regionserver receives an HServerAddress from the master as a Writable. It's a string hostname and an integer port. Our master is also appending the port to the string, so when they are concatenated it becomes hadoopnode98:60020:60020 and the HServerAddress cannot be instantiated.
> This should probably be fixed in the master as well, but I don't know where it happens. The attached patch handles it in the regionserver.
> Regionserver startup log:
> 2011-01-06 15:55:48,813 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Connected to master at hadoopmaster.hotpads.srv:60000
> 2011-01-06 15:55:48,857 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Telling master at hadoopmaster.hotpads.srv:60000 that we are up
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.regionserver.address=HadoopNode98.hotpads.srv:60020
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: fs.default.name=hdfs://hadoopmaster.hotpads.srv:54310/hbase
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.rootdir=hdfs://hadoopmaster.hotpads.srv:54310/hbase
> 2011-01-06 15:55:48,945 ERROR org.apache.hadoop.hbase.HServerAddress: Could not resolve the DNS name of HadoopNode98.hotpads.srv:60020:60020
> 2011-01-06 15:55:48,945 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: STOPPED: Failed initialization
> 2011-01-06 15:55:48,947 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: Failed init
> java.lang.IllegalArgumentException: Could not resolve the DNS name of HadoopNode98.hotpads.srv:60020:60020
> at org.apache.hadoop.hbase.HServerAddress.checkBindAddressCanBeResolved(HServerAddress.java:105)
> at org.apache.hadoop.hbase.HServerAddress.<init>(HServerAddress.java:76)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:798)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.tryReportForDuty(HRegionServer.java:1394)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:522)
> at java.lang.Thread.run(Thread.java:619)
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[jira] Commented: (HBASE-3425) HMaster sends duplicate ports to
regionserver in HServerAddress
Posted by "Matt Corgan (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-3425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12978594#action_12978594 ]
Matt Corgan commented on HBASE-3425:
------------------------------------
Hmm - it's not happening anymore. We had just changed the DNS entry that pointed to that IP address to give the regionserver a more friendly name. While having the problem the regionserver would log this line:
2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.regionserver.address=HadoopNode98.hotpads.srv:60020
But now that is gone and it logs this one:
2011-01-06 18:29:10,903 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Master passed us address to use. Was=HadoopNode98.hotpads.srv:60020, Now=HadoopNode98.hotpads.srv:60020
Looking through HMaster.regionServerStartup, it calls HBaseServer.getRemoteIp(). That asks the currently open socket for the InetAddress, and then things get hairy with PlainSocketImpl, InetAddress, etc... Something strange probably happened here due to the DNS modifications.
If for some reason any of those external networking classes returned the port number appended to the hostname, then HBase currently does nothing to catch it. Hbase instantiates an InetSocketAddress which doesn't validate the string, and that is passed to an HServerAddress which also doesn't validate it. Maybe the solution is to not handle the error, but to at least throw an exception earlier by validating the hostname string in HMaster.regionServerStartup.
> HMaster sends duplicate ports to regionserver in HServerAddress
> ---------------------------------------------------------------
>
> Key: HBASE-3425
> URL: https://issues.apache.org/jira/browse/HBASE-3425
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.90.0
> Reporter: Matt Corgan
> Fix For: 0.90.1
>
> Attachments: HBASE-3425[0.90.0].patch
>
>
> On regionserver startup, the regionserver receives an HServerAddress from the master as a Writable. It's a string hostname and an integer port. Our master is also appending the port to the string, so when they are concatenated it becomes hadoopnode98:60020:60020 and the HServerAddress cannot be instantiated.
> This should probably be fixed in the master as well, but I don't know where it happens. The attached patch handles it in the regionserver.
> Regionserver startup log:
> 2011-01-06 15:55:48,813 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Connected to master at hadoopmaster.hotpads.srv:60000
> 2011-01-06 15:55:48,857 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Telling master at hadoopmaster.hotpads.srv:60000 that we are up
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.regionserver.address=HadoopNode98.hotpads.srv:60020
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: fs.default.name=hdfs://hadoopmaster.hotpads.srv:54310/hbase
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.rootdir=hdfs://hadoopmaster.hotpads.srv:54310/hbase
> 2011-01-06 15:55:48,945 ERROR org.apache.hadoop.hbase.HServerAddress: Could not resolve the DNS name of HadoopNode98.hotpads.srv:60020:60020
> 2011-01-06 15:55:48,945 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: STOPPED: Failed initialization
> 2011-01-06 15:55:48,947 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: Failed init
> java.lang.IllegalArgumentException: Could not resolve the DNS name of HadoopNode98.hotpads.srv:60020:60020
> at org.apache.hadoop.hbase.HServerAddress.checkBindAddressCanBeResolved(HServerAddress.java:105)
> at org.apache.hadoop.hbase.HServerAddress.<init>(HServerAddress.java:76)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:798)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.tryReportForDuty(HRegionServer.java:1394)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:522)
> at java.lang.Thread.run(Thread.java:619)
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[jira] Commented: (HBASE-3425) HMaster sends duplicate ports to
regionserver in HServerAddress
Posted by "stack (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-3425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12978547#action_12978547 ]
stack commented on HBASE-3425:
------------------------------
@Matt: How'd you make this happen? Its never happened to me. How is the port getting doubled up in your context?
> HMaster sends duplicate ports to regionserver in HServerAddress
> ---------------------------------------------------------------
>
> Key: HBASE-3425
> URL: https://issues.apache.org/jira/browse/HBASE-3425
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.90.0
> Reporter: Matt Corgan
> Fix For: 0.90.1
>
> Attachments: HBASE-3425[0.90.0].patch
>
>
> On regionserver startup, the regionserver receives an HServerAddress from the master as a Writable. It's a string hostname and an integer port. Our master is also appending the port to the string, so when they are concatenated it becomes hadoopnode98:60020:60020 and the HServerAddress cannot be instantiated.
> This should probably be fixed in the master as well, but I don't know where it happens. The attached patch handles it in the regionserver.
> Regionserver startup log:
> 2011-01-06 15:55:48,813 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Connected to master at hadoopmaster.hotpads.srv:60000
> 2011-01-06 15:55:48,857 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Telling master at hadoopmaster.hotpads.srv:60000 that we are up
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.regionserver.address=HadoopNode98.hotpads.srv:60020
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: fs.default.name=hdfs://hadoopmaster.hotpads.srv:54310/hbase
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.rootdir=hdfs://hadoopmaster.hotpads.srv:54310/hbase
> 2011-01-06 15:55:48,945 ERROR org.apache.hadoop.hbase.HServerAddress: Could not resolve the DNS name of HadoopNode98.hotpads.srv:60020:60020
> 2011-01-06 15:55:48,945 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: STOPPED: Failed initialization
> 2011-01-06 15:55:48,947 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: Failed init
> java.lang.IllegalArgumentException: Could not resolve the DNS name of HadoopNode98.hotpads.srv:60020:60020
> at org.apache.hadoop.hbase.HServerAddress.checkBindAddressCanBeResolved(HServerAddress.java:105)
> at org.apache.hadoop.hbase.HServerAddress.<init>(HServerAddress.java:76)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:798)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.tryReportForDuty(HRegionServer.java:1394)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:522)
> at java.lang.Thread.run(Thread.java:619)
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[jira] Updated: (HBASE-3425) HMaster sends duplicate ports to
regionserver in HServerAddress
Posted by "Matt Corgan (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-3425?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Matt Corgan updated HBASE-3425:
-------------------------------
Attachment: HBASE-3425[0.90.0].patch
> HMaster sends duplicate ports to regionserver in HServerAddress
> ---------------------------------------------------------------
>
> Key: HBASE-3425
> URL: https://issues.apache.org/jira/browse/HBASE-3425
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.90.0
> Reporter: Matt Corgan
> Fix For: 0.90.0
>
> Attachments: HBASE-3425[0.90.0].patch
>
>
> On regionserver startup, the regionserver receives an HServerAddress from the master as a Writable. It's a string hostname and an integer port. Our master is also appending the port to the string, so when they are concatenated it becomes hadoopnode98:60020:60020 and the HServerAddress cannot be instantiated.
> This should probably be fixed in the master as well, but I don't know where it happens. The attached patch handles it in the regionserver.
> Regionserver startup log:
> 2011-01-06 15:55:48,813 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Connected to master at hadoopmaster.hotpads.srv:60000
> 2011-01-06 15:55:48,857 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Telling master at hadoopmaster.hotpads.srv:60000 that we are up
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.regionserver.address=HadoopNode98.hotpads.srv:60020
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: fs.default.name=hdfs://hadoopmaster.hotpads.srv:54310/hbase
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.rootdir=hdfs://hadoopmaster.hotpads.srv:54310/hbase
> 2011-01-06 15:55:48,945 ERROR org.apache.hadoop.hbase.HServerAddress: Could not resolve the DNS name of HadoopNode98.hotpads.srv:60020:60020
> 2011-01-06 15:55:48,945 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: STOPPED: Failed initialization
> 2011-01-06 15:55:48,947 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: Failed init
> java.lang.IllegalArgumentException: Could not resolve the DNS name of HadoopNode98.hotpads.srv:60020:60020
> at org.apache.hadoop.hbase.HServerAddress.checkBindAddressCanBeResolved(HServerAddress.java:105)
> at org.apache.hadoop.hbase.HServerAddress.<init>(HServerAddress.java:76)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:798)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.tryReportForDuty(HRegionServer.java:1394)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:522)
> at java.lang.Thread.run(Thread.java:619)
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[jira] Commented: (HBASE-3425) HMaster sends duplicate ports to
regionserver in HServerAddress
Posted by "stack (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-3425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12978634#action_12978634 ]
stack commented on HBASE-3425:
------------------------------
It just something I've never seen before. Probably no harm in your patch as is.
> HMaster sends duplicate ports to regionserver in HServerAddress
> ---------------------------------------------------------------
>
> Key: HBASE-3425
> URL: https://issues.apache.org/jira/browse/HBASE-3425
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.90.0
> Reporter: Matt Corgan
> Fix For: 0.90.1
>
> Attachments: HBASE-3425[0.90.0].patch
>
>
> On regionserver startup, the regionserver receives an HServerAddress from the master as a Writable. It's a string hostname and an integer port. Our master is also appending the port to the string, so when they are concatenated it becomes hadoopnode98:60020:60020 and the HServerAddress cannot be instantiated.
> This should probably be fixed in the master as well, but I don't know where it happens. The attached patch handles it in the regionserver.
> Regionserver startup log:
> 2011-01-06 15:55:48,813 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Connected to master at hadoopmaster.hotpads.srv:60000
> 2011-01-06 15:55:48,857 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Telling master at hadoopmaster.hotpads.srv:60000 that we are up
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.regionserver.address=HadoopNode98.hotpads.srv:60020
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: fs.default.name=hdfs://hadoopmaster.hotpads.srv:54310/hbase
> 2011-01-06 15:55:48,910 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.rootdir=hdfs://hadoopmaster.hotpads.srv:54310/hbase
> 2011-01-06 15:55:48,945 ERROR org.apache.hadoop.hbase.HServerAddress: Could not resolve the DNS name of HadoopNode98.hotpads.srv:60020:60020
> 2011-01-06 15:55:48,945 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: STOPPED: Failed initialization
> 2011-01-06 15:55:48,947 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: Failed init
> java.lang.IllegalArgumentException: Could not resolve the DNS name of HadoopNode98.hotpads.srv:60020:60020
> at org.apache.hadoop.hbase.HServerAddress.checkBindAddressCanBeResolved(HServerAddress.java:105)
> at org.apache.hadoop.hbase.HServerAddress.<init>(HServerAddress.java:76)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:798)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.tryReportForDuty(HRegionServer.java:1394)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:522)
> at java.lang.Thread.run(Thread.java:619)
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