Details
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Improvement
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Status: Open
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Major
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Resolution: Unresolved
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None
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None
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None
Description
Currently BackupSystemTable uses HTable API to query 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.