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https://issues.apache.org/jira/browse/HBASE-13170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14384193#comment-14384193
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Elliott Clark commented on HBASE-13170:
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To be clear the errors don't show up on cache misses. You only see errors when
the connection errors out or something like that.
However I don't want to spam the logs too much if there's a restart of
memcached servers.
> Allow block cache to be external
> --------------------------------
>
> Key: HBASE-13170
> URL: https://issues.apache.org/jira/browse/HBASE-13170
> Project: HBase
> Issue Type: New Feature
> Components: io
> Affects Versions: 2.0.0
> Reporter: Elliott Clark
> Assignee: Elliott Clark
> Fix For: 1.1.0
>
> Attachments: HBASE-13170-v1.patch, HBASE-13170-v2.patch,
> HBASE-13170-v3.patch, HBASE-13170-v4.patch, HBASE-13170.patch
>
>
> Allow an external service to provide the block cache. This has the nice
> property of allowing failover/upgrades to happen without causing a fully cold
> cache.
> Additionally this allows read replicas to share some of the same memory.
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