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https://issues.apache.org/jira/browse/HBASE-15600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Enis Soztutar updated HBASE-15600:
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Attachment: hbase-15600_v4.patch
v4 patch adds more unit test, and have a change where we check and prepare the
Mutations coming from coprocessors the same way that we check the Mutations
coming in multi. This ensures that Delete timestamps, etc are assigned
properly.
> 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, 1.3.0, 1.4.0, 0.98.20
>
> Attachments: HBASE-15600.patch, HBASE-15600_v1.patch,
> HBASE-15600_v2.patch, hbase-15600_v3.patch, hbase-15600_v4.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.
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