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https://issues.apache.org/jira/browse/HBASE-18002?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ramkrishna.s.vasudevan updated HBASE-18002:
-------------------------------------------
    Status: Patch Available  (was: Open)

> Investigate why bucket cache filling up in file mode in an exisitng file  is 
> slower
> -----------------------------------------------------------------------------------
>
>                 Key: HBASE-18002
>                 URL: https://issues.apache.org/jira/browse/HBASE-18002
>             Project: HBase
>          Issue Type: Sub-task
>          Components: BucketCache
>    Affects Versions: 2.0.0
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 2.0.0
>
>         Attachments: HBASE-18002_1.patch, HBASE-18002.patch
>
>
> This issue was observed when we recently did some tests with SSD based bucket 
> cache. Similar thing was also reported by @stack and [~danielpol] while doing 
> some of these bucket cache related testing.
> When we try to preload a bucket cache (in file mode) with a new file the 
> bucket cache fills up quite faster and there not much 'failedBlockAdditions'. 
> But when the same bucket cache is filled up with a preexisitng file ( that 
> had already some entries filled up) this time it has more 
> 'failedBlockAdditions' and the cache does not fill up faster. Investigate why 
> this happens. 



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