[jira] [Created] (HBASE-18482) Enable state to be passed between the batch mutate coprocessors

["James Taylor (JIRA)" <ji...@apache.org>]

James Taylor created HBASE-18482:
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             Summary: Enable state to be passed between the batch mutate coprocessors
                 Key: HBASE-18482
                 URL: https://issues.apache.org/jira/browse/HBASE-18482
             Project: HBase
          Issue Type: Improvement
            Reporter: James Taylor


For secondary indexing, Phoenix leverages the coprocessors that fire during the processing of a batch mutate: preBatchMutate, postBatchMutate, and postBatchMutateIndispensably. It would be very helpful if we had a way of passing state between these calls. One solution would be to provide a member variable in the MiniBatchOperationInProgress class that gets passed from invocation to invocation. Within doMiniBatchMutation, the instantiation of the MiniBatchOperationInProgress would simply set this context member variable based on the value from the previous MiniBatchOperationInProgress instantiation. Another solution would be to allow the a context object to be set on the ObserverContext which would then be available to the other calls.



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