Ted Yu created HBASE-16637:
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Summary: Add endpoint coprocessor to speed up queries to
hbase:backup table
Key: HBASE-16637
URL: https://issues.apache.org/jira/browse/HBASE-16637
Project: HBase
Issue Type: Improvement
Reporter: Ted Yu
Currently BackupSystemTable uses HTable API to query hbase:backup table.
In many scenarios, this is inefficient because filtering is done at client side.
With more information being recorded in hbase:backup table (such as bulk load
descriptor - see HBASE-14417), we should perform filtering on server side.
An endpoint coprocessor would serve this purpose.
e.g. without endpoint coprocessor, incremental restore would either bring all
bulk load descriptors to client followed by filtering for relevant tables or,
issue two queries - one for rows related to the tables being restored and
another query to bring down the bulk load descriptors.
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