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From "Tim Sell (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-746) Batching row mutations via thrift
Date Tue, 15 Jul 2008 21:39:31 GMT

     [ https://issues.apache.org/jira/browse/HBASE-746?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Tim Sell updated HBASE-746:

    Attachment: HBASE-746-first.patch

I've attached a patch that is one possible solution.

in Hbase.thrift
Adds a struct MutationBatch. A MutationBatch contains a row and a list of Mutations.
Adds to the Hbase thrift service. applyBatches(byte[] tableName, list<MutationBatch>
batches), and a timestamped version.

in ThriftServer
add the implementation of applyBatches, which just loops over the batches and calls mutateRows
for each.

This patch also changes ThriftServer where it uses ArrayList, it now uses List, as that is
what the new versions of thrift generate. So all the stuff in the thrift.generated folder
would need to be regenerated from the thrift file. I generated them using thrift-20080411p1.

> Batching row mutations via thrift
> ---------------------------------
>                 Key: HBASE-746
>                 URL: https://issues.apache.org/jira/browse/HBASE-746
>             Project: Hadoop HBase
>          Issue Type: Improvement
>          Components: thrift
>    Affects Versions: 0.2.0
>            Reporter: Tim Sell
>            Priority: Minor
>             Fix For: 0.2.0
>         Attachments: HBASE-746-first.patch
> It would be nice to be able to send to thrift a whole bunch of rows and mutations to
be applied to them. This will be very useful when doing a large initial dump to HBase as doing
the serialization for each row separately is expensive.
> The ThriftServer could use however HBASE-48 is solved.

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