[HBASE-18482] Enable state to be passed between the batch mutate coprocessors

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Assignee: Unassigned
• Reporter: James R. Taylor
• Created: 30/Jul/17 17:36
• Updated: 31/Jul/17 16:54
• Resolved: 31/Jul/17 16:54

Description

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.

Issue Links

• is related to: PHOENIX-4053 Lock row exclusively when necessary for mutable secondary indexing
• relates to: HBASE-18127 Enable state to be passed between the region observer coprocessor hook calls