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From "Rajeshbabu Chintaguntla (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-15600) Add provision for adding mutations to memstore or able to write to same region in batchMutate coprocessor hooks
Date Thu, 07 Apr 2016 09:42:25 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rajeshbabu Chintaguntla updated HBASE-15600:
--------------------------------------------
    Attachment: HBASE-15600.patch

> 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
>
>
> 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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