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From "Clint Morgan (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-1884) THBase WAL recovery sometimes needs to access __GLOBAL_TRX_TABLE__, but it may be stuck offline waiting on current region opening
Date Fri, 02 Oct 2009 22:36:23 GMT
THBase WAL recovery sometimes needs to access __GLOBAL_TRX_TABLE__, but it may be stuck offline
waiting on current region opening
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                 Key: HBASE-1884
                 URL: https://issues.apache.org/jira/browse/HBASE-1884
             Project: Hadoop HBase
          Issue Type: Bug
          Components: contrib
            Reporter: Clint Morgan


Coming back after a crash, we have region A, and region for __GLOBAL_TRX_LOG. Assuming that
there was a pending trx in A at the time of commit, it will find that in the WAL, and need
to ask __GLOBAL_TRX_LOG__ what happend with that transaction. However, if we are opening region
A before region __GLOBAL_TRX_LOG__ then we will fail to be able to query as we are blocking
the opening of the __GLOBAL_TRX_LOG__ region, but we need it to open region A.



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