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Posted to issues@hbase.apache.org by "Andrew Purtell (JIRA)" <ji...@apache.org> on 2016/08/01 18:14:20 UTC

[jira] [Updated] (HBASE-16296) Reverse scan performance degrades when using filter lists

     [ https://issues.apache.org/jira/browse/HBASE-16296?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Purtell updated HBASE-16296:
-----------------------------------
    Summary: Reverse scan performance degrades when using filter lists  (was: Reverse scan performance degrades when scanner cache size matches page filter size)

> Reverse scan performance degrades when using filter lists
> ---------------------------------------------------------
>
>                 Key: HBASE-16296
>                 URL: https://issues.apache.org/jira/browse/HBASE-16296
>             Project: HBase
>          Issue Type: Bug
>          Components: Filters
>            Reporter: James Taylor
>             Fix For: 2.0.0, 1.3.0, 1.4.0, 1.1.6, 0.98.21, 1.2.3
>
>         Attachments: 16296-MAYBE-v2.txt, 16296-MAYBE.txt, PAgefilter.patch, generatedata-snippet.java, repro-snippet.java
>
>
> When a reverse scan is done, the server seems to not know it's done when the scanner cache size matches the number of rows in a PageFilter. See PHOENIX-3121 for how this manifests itself. We have a standalone, pure HBase API reproducer too that I'll attach (courtesy of [~churromorales] and [~mujtabachohan]).



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