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Posted to issues@hbase.apache.org by "Andrew Kyle Purtell (Jira)" <ji...@apache.org> on 2022/06/16 18:03:00 UTC

[jira] [Closed] (HBASE-9440) Pass blocks of KVs from HFile scanner to the StoreFileScanner and up

     [ https://issues.apache.org/jira/browse/HBASE-9440?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Kyle Purtell closed HBASE-9440.
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> Pass blocks of KVs from HFile scanner to the StoreFileScanner and up
> --------------------------------------------------------------------
>
>                 Key: HBASE-9440
>                 URL: https://issues.apache.org/jira/browse/HBASE-9440
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Priority: Major
>
> Currently we read KVs from an HFileScanner one-by-one and pass them up the scanner/heap tree. Many time the ranges of KVs retrieved from StoreFileScanner (by StoreScanners) and HFileScanner (by StoreFileScanner) will be non-overlapping. If chunks of KVs do not overlap we can sort entire chunks just by comparing the start/end key of the chunk. Only if chunks are overlapping do we need to sort KV by KV as we do now.
> I have no patch, but I wanted to float this idea. 



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