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stack commented on HBASE-15600: ------------------------------- What is meant by this? bq. ....but writing from batchMutate API is not allowed because of mvcc. Why is mvcc in your way? > Add provision for adding mutations to memstore or able to write to same > region in batchMutate coprocessor hooks > --------------------------------------------------------------------------------------------------------------- > > Key: HBASE-15600 > URL: https://issues.apache.org/jira/browse/HBASE-15600 > Project: HBase > Issue Type: Improvement > Reporter: Rajeshbabu Chintaguntla > Assignee: Rajeshbabu Chintaguntla > Fix For: 2.0.0, 0.98.19, 1.1.5, 1.2.2, 1.0.5 > > Attachments: HBASE-15600.patch, HBASE-15600_v1.patch, > HBASE-15600_v2.patch > > > As part of PHOENIX-1734 we need to write the index updates to same region > from coprocessors but writing from batchMutate API is not allowed because of > mvcc. > Raised PHOENIX-2742 to discuss any alternative way to write to the same > region directly or not but not having any proper solution there. > Currently we have provision to write wal edits from coprocessors. We can set > wal edits in MiniBatchOperationInProgress. > {noformat} > /** > * Sets the walEdit for the operation(Mutation) at the specified position. > * @param index > * @param walEdit > */ > public void setWalEdit(int index, WALEdit walEdit) { > this.walEditsFromCoprocessors[getAbsoluteIndex(index)] = walEdit; > } > {noformat} > Similarly we can allow to write mutations from coprocessors to memstore as > well. Or else we should provide the batch mutation API allow write in batch > mutate coprocessors. -- This message was sent by Atlassian JIRA (v6.3.4#6332)