[jira] [Created] (IMPALA-10923) Fine grained table refreshing for partition level events

["Yu-Wen Lai (Jira)" <ji...@apache.org>]

Yu-Wen Lai created IMPALA-10923:
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             Summary: Fine grained table refreshing for partition level events
                 Key: IMPALA-10923
                 URL: https://issues.apache.org/jira/browse/IMPALA-10923
             Project: IMPALA
          Issue Type: Improvement
          Components: Catalog
            Reporter: Yu-Wen Lai
            Assignee: Yu-Wen Lai


For ensuring the transactional tables are consistent, we currently take whole table refreshing even a change is just for a partition only. That is too expensive and possibly make event processing has a longer delay.

To enable fine-grained table refreshing, there are three main changes in this proposal.
 # maintain validWriteIdList in Catalogd for transactional tables. We will track write id changes by AllocWriteIdEvents, CommitTxnEvents, and AbortTxnEvents.
 # trigger partition level refreshing for addPartitionEvents, dropPartitionEvents, and AlterPartitionEvents.
 # Introduce a config *incremental_refresh_acid*, which can switch on/off the fine-grained table refreshing



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