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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15240) Go Big BucketCache Fixes
Date Fri, 12 Feb 2016 19:38:18 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15145151#comment-15145151
] 

stack commented on HBASE-15240:
-------------------------------

Messing some more, prefetch needs the above hack where we wait to get our blocks into cache...
otherwise we skip a bunch.... silently.  Need some metric in here, some indicator on how well
prefetch is doing. Could we set 'wait on cache' if prefetching because defaults of not waiting
and 50ms seem good as defaults... though they should be configurable. I can imagine folks
finding 50ms too long to wait.

Need to fix the 'full' indicator. Prefetch is erroring out early when full.. and it queues
files to read though block cache may be full... FIX.

> Go Big BucketCache Fixes
> ------------------------
>
>                 Key: HBASE-15240
>                 URL: https://issues.apache.org/jira/browse/HBASE-15240
>             Project: HBase
>          Issue Type: Umbrella
>          Components: BucketCache
>            Reporter: stack
>            Assignee: stack
>         Attachments: Screen Shot 2016-02-10 at 6.27.26 AM.png
>
>
> Umbrella issue to which we will attach issues that prevent bucketcache going big; there's
a few.



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