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From "Shaurya Gupta (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-10273) Reduce number of data directory scans during startup
Date Fri, 01 Mar 2019 10:24:00 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-10273?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Shaurya Gupta updated CASSANDRA-10273:
--------------------------------------
    Attachment: patch_CASSANDRA-10273_trunk

> Reduce number of data directory scans during startup
> ----------------------------------------------------
>
>                 Key: CASSANDRA-10273
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10273
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Local/Startup and Shutdown
>            Reporter: Robert Stupp
>            Assignee: Giampaolo
>            Priority: Minor
>              Labels: lhf
>         Attachments: patch_CASSANDRA-10273_trunk
>
>
> ATM we scan each data directory four times. We could easily reduce that to at least two,
maybe to one.
> # pre-flight (startup tests) scrub
> # pre-flight (startup tests) sstable min version
> # {{ColumnFamilyStore.createColumnFamilyStore}}
> # {{ColumnFamilyStore.<init>}} (if {{loadSSTables==true}})
> First two pre-flight tests could be combined to one and 3+4 could also be combined, as
both appear at pretty related code paths.



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