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From "Jason Dai (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-6805) Extend co-processor framework to provide observers for filter operations
Date Tue, 18 Sep 2012 12:14:07 GMT
Jason Dai created HBASE-6805:
--------------------------------

             Summary: Extend co-processor framework to provide observers for filter operations
                 Key: HBASE-6805
                 URL: https://issues.apache.org/jira/browse/HBASE-6805
             Project: HBase
          Issue Type: Sub-task
          Components: coprocessors
    Affects Versions: 0.96.0
            Reporter: Jason Dai


There are several filter operations (e.g., filterKeyValue, filterRow, transform, etc.) at
the region server side that either exclude KVs from the returned results, or transform the
returned KV. We need to provide observers (e.g., preFilterKeyValue and postFilterKeyValue)
for these operations in the same way as the observers for other data access operations (e.g.,
preGet and postGet). This extension is needed to support DOT (e.g., extracting individual
fields from the document in the observers before passing them to the related filter operations)


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