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Posted to dev@hbase.apache.org by "Eric Tschetter (JIRA)" <ji...@apache.org> on 2009/07/24 00:20:15 UTC
[jira] Created: (HBASE-1691) Cannot connect to 0.20 HBase from an
MR job running on a 0.19.0 version of Hadoop
Cannot connect to 0.20 HBase from an MR job running on a 0.19.0 version of Hadoop
---------------------------------------------------------------------------------
Key: HBASE-1691
URL: https://issues.apache.org/jira/browse/HBASE-1691
Project: Hadoop HBase
Issue Type: Bug
Components: client
Affects Versions: 0.20.0
Reporter: Eric Tschetter
When running MR jobs on 0.19.0 Hadoop, the hadoop core libraries get loaded by the classloader before 0.20 libraries included in the job jar. HBaseClient makes a call to org.apache.hadoop.net.NetUtils.connect on line 305 which does not exist in previous versions of the hadoop jars and therefore results in NoSuchMethodErrors getting thrown.
As a simple workaround, you can replace the call
NetUtils.connect(socket, remoteId.getAddress(), 20000);
with
socket.connect(remoteId.getAddress(), 20000);
Note, however, that the javadoc on the NetUtils.connect() method makes mention of sun's implementation of stuff being less than wonderful, so the existence of this JIRA and this workaround should not be taken as meaning that this is actually a recommended solution.
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[jira] Updated: (HBASE-1691) Cannot connect to 0.20 HBase from an
MR job running on a 0.19.0 version of Hadoop
Posted by "Eric Tschetter (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-1691?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Eric Tschetter updated HBASE-1691:
----------------------------------
Attachment: hbase-1691-0.20.0.patch
Uploading patch
> Cannot connect to 0.20 HBase from an MR job running on a 0.19.0 version of Hadoop
> ---------------------------------------------------------------------------------
>
> Key: HBASE-1691
> URL: https://issues.apache.org/jira/browse/HBASE-1691
> Project: Hadoop HBase
> Issue Type: Bug
> Components: client
> Affects Versions: 0.20.0
> Reporter: Eric Tschetter
> Attachments: hbase-1691-0.20.0.patch
>
>
> When running MR jobs on 0.19.0 Hadoop, the hadoop core libraries get loaded by the classloader before 0.20 libraries included in the job jar. HBaseClient makes a call to org.apache.hadoop.net.NetUtils.connect on line 305 which does not exist in previous versions of the hadoop jars and therefore results in NoSuchMethodErrors getting thrown.
> As a simple workaround, you can replace the call
> NetUtils.connect(socket, remoteId.getAddress(), 20000);
> with
> socket.connect(remoteId.getAddress(), 20000);
> Note, however, that the javadoc on the NetUtils.connect() method makes mention of sun's implementation of stuff being less than wonderful, so the existence of this JIRA and this workaround should not be taken as meaning that this is actually a recommended solution.
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[jira] Resolved: (HBASE-1691) hbase 0.20 on hadoop 0.19 (WAS
->Cannot connect to 0.20 HBase from an MR job running on a 0.19.0 version
of Hadoop)
Posted by "Andrew Purtell (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-1691?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrew Purtell resolved HBASE-1691.
-----------------------------------
Resolution: Won't Fix
> hbase 0.20 on hadoop 0.19 (WAS ->Cannot connect to 0.20 HBase from an MR job running on a 0.19.0 version of Hadoop)
> -------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-1691
> URL: https://issues.apache.org/jira/browse/HBASE-1691
> Project: Hadoop HBase
> Issue Type: Bug
> Components: client
> Affects Versions: 0.20.0
> Reporter: Eric Tschetter
> Attachments: hbase-1691-0.20.0.patch
>
>
> When running MR jobs on 0.19.0 Hadoop, the hadoop core libraries get loaded by the classloader before 0.20 libraries included in the job jar. HBaseClient makes a call to org.apache.hadoop.net.NetUtils.connect on line 305 which does not exist in previous versions of the hadoop jars and therefore results in NoSuchMethodErrors getting thrown.
> As a simple workaround, you can replace the call
> NetUtils.connect(socket, remoteId.getAddress(), 20000);
> with
> socket.connect(remoteId.getAddress(), 20000);
> Note, however, that the javadoc on the NetUtils.connect() method makes mention of sun's implementation of stuff being less than wonderful, so the existence of this JIRA and this workaround should not be taken as meaning that this is actually a recommended solution.
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[jira] Commented: (HBASE-1691) Cannot connect to 0.20 HBase from an
MR job running on a 0.19.0 version of Hadoop
Posted by "Jim Kellerman (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-1691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12734827#action_12734827 ]
Jim Kellerman commented on HBASE-1691:
--------------------------------------
HBase 0.20 is supposed to run on Hadoop 0.20. Running it on 0.19 is not supported.
> Cannot connect to 0.20 HBase from an MR job running on a 0.19.0 version of Hadoop
> ---------------------------------------------------------------------------------
>
> Key: HBASE-1691
> URL: https://issues.apache.org/jira/browse/HBASE-1691
> Project: Hadoop HBase
> Issue Type: Bug
> Components: client
> Affects Versions: 0.20.0
> Reporter: Eric Tschetter
> Attachments: hbase-1691-0.20.0.patch
>
>
> When running MR jobs on 0.19.0 Hadoop, the hadoop core libraries get loaded by the classloader before 0.20 libraries included in the job jar. HBaseClient makes a call to org.apache.hadoop.net.NetUtils.connect on line 305 which does not exist in previous versions of the hadoop jars and therefore results in NoSuchMethodErrors getting thrown.
> As a simple workaround, you can replace the call
> NetUtils.connect(socket, remoteId.getAddress(), 20000);
> with
> socket.connect(remoteId.getAddress(), 20000);
> Note, however, that the javadoc on the NetUtils.connect() method makes mention of sun's implementation of stuff being less than wonderful, so the existence of this JIRA and this workaround should not be taken as meaning that this is actually a recommended solution.
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