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Re: region vs regionserver coprocessors - HBase - [mail # dev]
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...Looking at RegionServerObserver, it only defines a single method -- preStopRegionServer(). AccessController mediates access on all normal client operations on data, which happen on reg...
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Author: Gary Helmling,
2013-05-15, 02:58
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Re: Endpoint vs. Observer Coprocessors - HBase - [mail # user]
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...A single class can act as both a RegionObserver and an endpoint. The Base... classes are just there for convenience. To implement both, for example, you could: 1) have your class...
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Author: Gary Helmling,
2013-05-03, 16:54
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[HBASE-8222] User class should implement equals() and hashCode() - HBase - [issue]
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...The current implementation of the User class does not override equals() and hashCode(), so connection reuse in HBaseClient is completely broken....
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http://issues.apache.org/jira/browse/HBASE-8222
Author: Gary Helmling,
2013-04-27, 16:55
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Re: Coprocessors - HBase - [mail # user]
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...This is essentially what coprocessor endpoints (called through HTable.coprocessorExec()) basically do. (One difference is that there is a parallel request per-region, not per-region se...
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Author: Gary Helmling,
2013-04-25, 22:35
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Re: Coreprocessor always scan the whole table. - HBase - [mail # user]
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...As others mention HBASE-6870 is about coprocessorExec() always scanning the full .META. table to determine region locations. Is this what you mean or are you talking about your coproce...
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Author: Gary Helmling,
2013-04-19, 16:17
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Re: Is it correct that TokenInfo is always "HBASE_AUTH_TOKEN"? - HBase - [mail # dev]
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...Yes its always HBASE_AUTH_TOKEN. This corresponds to the type set when the token is granted and we only grant one type. I don't think it makes sense to split into this into 2 typ...
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Author: Gary Helmling,
2013-04-19, 02:12
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Re: Hbase question - HBase - [mail # user]
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...Hi Rami, One thing to note for RegionObservers, is that each table region gets its own instance of each configured coprocessor. So if your cluster has N regions per region server...
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Author: Gary Helmling,
2013-04-09, 18:57
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[HBASE-4709] Hadoop metrics2 setup in test MiniDFSClusters spewing JMX errors - HBase - [issue]
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...Since switching over HBase to build with Hadoop 0.20.205.0, we've been getting a lot of metrics related errors in the log files for tests:2011-10-30 22:00:22,858 INFO [main] log.Slf4jL...
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http://issues.apache.org/jira/browse/HBASE-4709
Author: Gary Helmling,
2013-04-06, 08:07
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[HBASE-6887] Convert security-related shell commands to use PB-based AccessControlService - HBase - [issue]
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...The security-related HBase shell commands (grant, revoke, user_permission) are still using the old CoprocessorProtocol-based AccessControllerProtocol endpoint for dynamic RPC. These ne...
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http://issues.apache.org/jira/browse/HBASE-6887
Author: Gary Helmling,
2013-04-06, 08:06
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Re: HBaseClient isn't reusing connections but creating a new one each time - HBase - [mail # user]
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...Hi Jeff, Yeah that is pretty bad. User should definitely be implementing equals() and hashCode(). Thanks for tracking this down and reporting it. I opened https://iss...
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Author: Gary Helmling,
2013-03-29, 18:59
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