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Posted to issues@trafodion.apache.org by "Alice Chen (JIRA)" <ji...@apache.org> on 2015/07/22 20:17:44 UTC

[jira] [Created] (TRAFODION-664) LP Bug: 1376306 - loading into salted tables requires parallel query plan

Alice Chen created TRAFODION-664:
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             Summary: LP Bug: 1376306 - loading into salted tables requires parallel query plan
                 Key: TRAFODION-664
                 URL: https://issues.apache.org/jira/browse/TRAFODION-664
             Project: Apache Trafodion
          Issue Type: Bug
          Components: sql-cmp
            Reporter: Apache Trafodion
            Assignee: Apache Trafodion
            Priority: Critical
             Fix For: 1.0 (pre-incubation)


when loading into a salted table using the bulk loader the hbase API expects one or more files per region . if the plan is serial and one single hfile is produced the hbase API may fail. This Lp is to change the optimizer to always produce parallel plan with RANGE partitioning when the target table is salted/partitioned. 
The number of ESPs needs to be t he same as the number of partitions and t he the hfiles produced by one ESP needs to fit inside one single partition. (these 2 conditions are already taking place in the optimizer when the plan is not serial)
Assigned to LaunchPad User khaled Bouaziz



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