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Posted to dev@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2009/03/13 17:09:50 UTC
[jira] Resolved: (HBASE-1251)
HConnectionManager.getConnection(HBaseConfiguration) returns same
HConnection for different HBaseConfigurations
[ https://issues.apache.org/jira/browse/HBASE-1251?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack resolved HBASE-1251.
--------------------------
Resolution: Fixed
Fix Version/s: 0.20.0
Applied. Thank you for the patch Guilherme.
> HConnectionManager.getConnection(HBaseConfiguration) returns same HConnection for different HBaseConfigurations
> ----------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-1251
> URL: https://issues.apache.org/jira/browse/HBASE-1251
> Project: Hadoop HBase
> Issue Type: Bug
> Components: client
> Affects Versions: 0.19.0
> Reporter: Guilherme Mauro Germoglio Barbosa
> Fix For: 0.20.0
>
> Attachments: HBASE-1251.patch
>
>
> This occurs when the following happens:
> 1. Consider a client that invokes HBaseAdmin.checkHBaseAvailable(config) before doing anything. Although this method copies the HBaseConfiguration object and sets hbase.client.retries.number to 1 (see HBaseAdmin, line 751), it creates an HBaseAdmin object, which invokes HConnectionManager.getConnection(conf). Please notice that this conf is that with hbase.client.retries.number equals to 1.
> 2. HConnectionManager.getConnection then creates a HConnection using this conf and puts it into a static map (see HConnectionManager, line 93) indexed by hbase.rootdir.
> 3. Then, if the same client now creates a HTable object (using, for instance, a HBaseConfiguration with hbase.client.retries.number equals to 10 but the same hbase.rootdir), it will invoke HConnectionManager.getConnection(conf) again (see HTable, line 109). However, when it checks the static map for a HConnection it finds one - the one previously created by the HBaseAdmin object and using hbase.client.retries.number 1 - and returns it without creating a new one with the correct HBaseConfiguration.
> However, the expected behavior is: HConnectionManager must return different HConnections for different HBaseConfigurations.
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